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an important notice at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. production data. ADC08DJ3200 slvsdr1 ? february 2018 ADC08DJ3200 6.4-gsps single-channel or 3.2-gsps dual-channel, 8-bit, rf-sampling analog-to-digital converter (adc) 1 1 features 1 ? adc core: ? 8-bit resolution ? up to 6.4 gsps in single-channel mode ? up to 3.2 gsps in dual-channel mode ? performance specifications (f in = 997 mhz): ? enob: 7.8 bits ? sfdr: ? dual-channel mode: 67 dbfs ? single-channel mode: 62 dbfs ? buffered analog inputs with v cmi of 0 v: ? analog input bandwidth ( ? 3 db): 8.0 ghz ? usable input frequency range: > 10 ghz ? full-scale input voltage (v fs , default): 0.8 v pp ? analog input common-mode (v icm ): 0 v ? noiseless aperture delay (t ad ) adjustment: ? precise sampling control: 19-fs step ? simplifies synchronization and interleaving ? temperature and voltage invariant delays ? easy-to-use synchronization features: ? automatic sysref timing calibration ? timestamp for sample marking ? jesd204b serial data interface: ? supports subclass 0 and 1 ? maximum lane rate: 12.8 gbps ? up to 16 lanes allows reduced lane rate ? power consumption: 2.8 w ? power supplies: 1.1 v, 1.9 v ADC08DJ3200 measured input bandwidth 2 applications ? satellite communications (satcom) ? synthetic aperture radar (sar) ? time-of-flight and lidar distance measurement ? oscilloscopes and wideband digitizers ? microwave backhaul ? rf sampling software-defined radio (sdr) ? spectrometry 3 description the ADC08DJ3200 device is an rf-sampling, giga- sample, analog-to-digital converter (adc) that can directly sample input frequencies from dc to above 10 ghz. in dual-channel mode, the ADC08DJ3200 can sample up to 3200 msps and up to 6400 msps in single-channel mode. programmable tradeoffs in channel count (dual-channel mode) and nyquist bandwidth (single-channel mode) allow development of flexible hardware that meets the needs of both high channel count or wide instantaneous signal bandwidth applications. full-power input bandwidth ( ? 3 db) of 8.0 ghz, with usable frequencies exceeding the ? 3-db point in both dual- and single- channel modes, allows direct rf sampling of l-band, s-band, c-band, and x-band for frequency agile systems. the ADC08DJ3200 uses a high-speed jesd204b output interface with up to 16 serialized lanes and subclass-1 compliance for deterministic latency and multi-device synchronization. the serial output lanes support up to 12.8 gbps and can be configured to trade-off bit rate and number of lanes. at 5 gsps, only four total lanes are required running at 12.5 gbps or 16 lanes can be used to reduce the lane rate to 3.125 gbps. innovative synchronization features, including noiseless aperture delay (t ad ) adjustment and sysref windowing, simplify system design for phased array radar and mimo communications. device information (1) part number package body size (nom) ADC08DJ3200 fcbga (144) 10.00 mm 10.00 mm (1) for all available packages, see the orderable addendum at the end of the data sheet. productfolder input frequency (ghz) normalized gain response (db) 0 2 4 6 8 10 12 -15 -12 -9 -6 -3 0 3 d_bw single channel mode dual channel mode support &community tools & software technical documents ordernow
2 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated table of contents 1 features .................................................................. 1 2 applications ........................................................... 1 3 description ............................................................. 1 4 revision history ..................................................... 2 5 pin configuration and functions ......................... 3 6 specifications ....................................................... 10 6.1 absolute maximum ratings .................................... 10 6.2 esd ratings ............................................................ 10 6.3 recommended operating conditions ..................... 11 6.4 thermal information ................................................ 11 6.5 electrical characteristics: dc specifications .......... 12 6.6 electrical characteristics: power consumption ...... 14 6.7 electrical characteristics: ac specifications (dual- channel mode) ........................................................ 15 6.8 electrical characteristics: ac specifications (single- channel mode) ........................................................ 18 6.9 timing requirements .............................................. 21 6.10 switching characteristics ...................................... 22 6.11 typical characteristics .......................................... 25 7 detailed description ............................................ 35 7.1 overview ................................................................. 35 7.2 functional block diagram ....................................... 36 7.3 feature description ................................................. 36 7.4 device functional modes ........................................ 49 7.5 programming ........................................................... 61 7.6 register maps ......................................................... 62 8 application and implementation ...................... 106 8.1 application information .......................................... 106 8.2 typical applications ............................................. 106 8.3 initialization set up .............................................. 112 9 power supply recommendations .................... 112 9.1 power sequencing ................................................ 114 10 layout ................................................................. 114 10.1 layout guidelines ............................................... 114 10.2 layout example .................................................. 115 11 device and documentation support ............... 118 11.1 device support .................................................. 118 11.2 documentation support ...................................... 118 11.3 receiving notification of documentation updates .................................................................. 118 11.4 community resources ........................................ 119 11.5 trademarks ......................................................... 119 11.6 electrostatic discharge caution .......................... 119 11.7 glossary .............................................................. 119 12 mechanical, packaging, and orderable information ......................................................... 119 4 revision history note: page numbers for previous revisions may differ from page numbers in the current version. date revision notes february 2018 * initial release.
3 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 5 pin configuration and functions aav package 144-ball flip chip bga top view 1 2 3 4 5 6 7 8 9 10 11 12 a b c d e f g h j k l m not to scale agnd agnd agnd ina+ ina agnd agnd da3+ da3 da2+ da2 dgnd tmstp+ agnd agnd agnd agnd agnd agnd da7+ da7 da6+ da6 dgnd tmstp syncse bg va19 va11 agnd ncoa0 ora0 vd11 vd11 da5+ da1+ agnd va11 va11 va19 va11 agnd ncoa1 ora1 dgnd dgnd da5 da1 agnd va19 va19 va19 va11 agnd caltrig scs vd11 vd11 da4+ da0+ clk+ agnd agnd va19 va11 agnd calstat sclk dgnd dgnd da4 da0 clk agnd agnd va19 va11 agnd vd11 sdi dgnd dgnd db4 db0 agnd va19 va19 va19 va11 agnd vd11 sdo vd11 vd11 db4+ db0+ agnd va11 va11 va19 va11 agnd ncob1 orb1 dgnd dgnd db5 db1 sysref+ tdiode+ tdiode va19 va11 pd ncob0 orb0 vd11 vd11 db5+ db1+ sysref agnd agnd agnd agnd agnd agnd db7+ db7 db6+ db6 dgnd agnd agnd agnd inb+ inb agnd agnd db3+ db3 db2+ db2 dgnd
4 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated (1) powering down the high-speed data outputs (da0 ... da7 , db0 ... db7 ) for extended times may reduce performance of the output serializers, especially at high data rates. powering down the serializers occurs when the pd pin is held high, the mode register is programmed to a value other than 0x00 or 0x01, the pd_ach or pd_bch registers settings are programmed to 1, or when the jmode register setting is programmed to a mode that uses less than the 16 total lanes that the device allows. for instance, jmode 0 uses eight total lanes and therefore the four highest-indexed lanes for each jesd204b link (da4 ... da7 , db4 ... db7 ) are powered down in this mode. when the pd pin is held high or the mode register is programmed to a value other than 0x00 or 0x01, all output serializers are powered down. when the pd_ach or pd_bch register settings are programmed to 1, the associated adc channel and lanes are powered down. to prevent unreliable operation, the pd pin and mode register must only be used for brief periods of time to measure temperature diode offsets and not used for long-term power savings. furthermore, using a jmode that uses fewer than 16 lanes results in unreliable operation of the unused lanes. if the system will never use the unused lanes during the lifetime of the device, then the unused lanes do not cause issues and can be powered down. if the system may make use of the unused lanes at a later time, the reliable operation of the serializer outputs can be maintained by enabling jextra_a and jextra_b, which results in the vd11 power consumption to increase and the output serializers to toggle. pin functions pin i/o description no. name a1, a2, a3 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. a4 ina+ i channel a analog input positive connection. the differential full-scale input voltage is determined by the fs_range_a register (see the full-scale voltage (vfs) adjustment section). this input is terminated to ground through a 50- termination resistor. the input common-mode voltage is typically be set to 0 v (gnd) and must follow the recommendations in the recommended operating conditions table. this pin can be left disconnected if not used. using ina is recommended in single-channel mode for optimized performance. a5 ina ? i channel a analog input negative connection. see ina+ (pin a4) for detailed description. this input is terminated to ground through a 50- termination resistor. this pin can be left disconnected if not used. a6, a7 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. a8 da3+ o high-speed serialized-data output for channel a, lane 3, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. a9 da3 ? o high-speed serialized-data output for channel a, lane 3, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. a10 da2+ o high-speed serialized-data output for channel a, lane 2, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. a11 da2 ? o high-speed serialized-data output for channel a, lane 2, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. a12 dgnd ? digital supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. b1 tmstp+ i timestamp input positive connection or differential jesd204b sync positive connection. this input is a timestamp input, used to mark a specific sample, when timestamp_en is set to 1. this differential input is used as the jesd204b sync signal input when sync_sel is set 1. this input can be used as both a timestamp and differential sync input at the same time, allowing feedback of the sync signal using the timestamp mechanism. tmstp uses active low signaling when used as a jesd204b sync. for additional usage information, see the timestamp section. tmstp_recv_en must be set to 1 to use this input. this differential input (tmstp+ to tmstp ? ) has an internal untrimmed 100- differential termination and can be ac-coupled when tmstp_lvpecl_en is set to 0. the termination changes to 50 to ground on each input pin (tmstp+ and tmstp ? ) and can be dc coupled when tmstp_lvpecl_en is set to 1. this pin is not self-biased and therefore must be externally biased for both ac- and dc-coupled configurations. the common-mode voltage must be within the range provided in the recommended operating conditions table when both ac and dc coupled. this pin can be left disconnected and disabled (tmstp_recv_en = 0) if syncse is used for jesd204b sync and timestamp is not required. b2, b3, b4, b5, b6, b7 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board.
5 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated pin functions (continued) pin i/o description no. name b8 da7+ o high-speed serialized data output for channel a, lane 7, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. b9 da7 ? o high-speed serialized data output for channel a, lane 7, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. b10 da6+ o high-speed serialized data output for channel a, lane 6, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. b11 da6 ? o high-speed serialized data output for channel a, lane 6, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. b12 dgnd ? digital supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. c1 tmstp ? i timestamp input positive connection or differential jesd204b sync negative connection. this pin can be left disconnected and disabled (tmstp_recv_en = 0) if syncse is used for jesd204b sync and timestamp is not required. c2 syncse i single-ended jesd204b sync signal. this input is an active low input that is used to initialize the jesd204b serial link when sync_sel is set to 0. when toggled low this input initiates code group synchronization (see the code group synchronization (cgs) section). after code group synchronization, this input must be toggled high to start the initial lane alignment sequence (see the initial lane alignment sequence (ilas) section). a differential sync signal can be used instead by setting sync_sel to 1 and using tmstp as a differential sync input. tie this pin to gnd if differential sync (tmstp ) is used as the jesd204b sync signal. c3 bg o band-gap voltage output. this pin is capable of sourcing only small currents and driving limited capacitive loads, as specified in the recommended operating conditions table. this pin can be left disconnected if not used. c4 va19 i 1.9-v analog supply c5 va11 i 1.1-v analog supply c6 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. c7 ncoa0 i tie this pin to gnd. c8 ora0 o fast overrange detection status for channel a for the ovr_t0 threshold. when the analog input exceeds the threshold programmed into ovr_t0, this status indicator goes high. the minimum pulse duration is set by ovr_n. see the adc overrange detection section for more information. this pin can be left disconnected if not used. c9, c10 vd11 i 1.1-v digital supply c11 da5+ o high-speed serialized data output for channel a, lane 5, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. c12 da1+ o high-speed serialized data output for channel a, lane 1, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. d1 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. d2, d3 va11 i 1.1-v analog supply d4 va19 i 1.9-v analog supply d5 va11 i 1.1-v analog supply d6 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. d7 ncoa1 i tie this pin to gnd.
6 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated pin functions (continued) pin i/o description no. name d8 ora1 o fast overrange detection status for channel a for the ovr_t1 threshold. when the analog input exceeds the threshold programmed into ovr_t1, this status indicator goes high. the minimum pulse duration is set by ovr_n. see the adc overrange detection section for more information. this pin can be left disconnected if not used. d9, d10 dgnd ? digital supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. d11 da5 ? o high-speed serialized data output for channel a, lane 5, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. d12 da1 ? o high-speed serialized data output for channel a, lane 1, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. e1 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. e2, e3, e4 va19 i 1.9-v analog supply e5 va11 i 1.1-v analog supply e6 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. e7 caltrig i foreground calibration trigger input. this pin is only used if hardware calibration triggering is selected in cal_trig_en, otherwise software triggering is performed using cal_soft_trig. tie this pin to gnd if not used. e8 scs i serial interface chip select active low input. the using the serial interface section describes the serial interface in more detail. supports 1.1-v and 1.8-v cmos levels. this pin has a 82-k pullup resistor to vd11. e9, e10 vd11 i 1.1-v digital supply e11 da4+ o high-speed serialized data output for channel a, lane 4, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. e12 da0+ o high-speed serialized data output for channel a, lane 0, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. f1 clk+ i device (sampling) clock positive input. the clock signal is strongly recommended to be ac- coupled to this input for best performance. in single-channel mode, the analog input signal is sampled on both the rising and falling edges. in dual-channel mode, the analog signal is sampled on the rising edge. this differential input has an internal untrimmed 100- differential termination and is self-biased to the optimal input common-mode voltage as long as devclk_lvpecl_en is set to 0. f2, f3 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. f4 va19 i 1.9-v analog supply f5 va11 i 1.1-v analog supply f6 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. f7 calstat o foreground calibration status output or device alarm output. functionality is programmed through cal_status_sel. this pin can be left disconnected if not used. f8 sclk i serial interface clock. this pin functions as the serial-interface clock input that clocks the serial programming data in and out. the using the serial interface section describes the serial interface in more detail. supports 1.1-v and 1.8-v cmos levels. f9, f10 dgnd ? digital supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. f11 da4 ? o high-speed serialized data output for channel a, lane 4, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table.
7 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated pin functions (continued) pin i/o description no. name f12 da0 ? o high-speed serialized data output for channel a, lane 0, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. g1 clk ? i device (sampling) clock negative input. ti strongly recommends using ac-coupling for best performance. g2, g3 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. g4 va19 i 1.9-v analog supply g5 va11 i 1.1-v analog supply g6 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. g7 vd11 i 1.1-v digital supply g8 sdi i serial interface data input. the using the serial interface section describes the serial interface in more detail. supports 1.1-v and 1.8-v cmos levels. g9, g10 dgnd ? digital supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. g11 db4 ? o high-speed serialized data output for channel b, lane 4, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. g12 db0 ? o high-speed serialized data output for channel b, lane 0, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. h1 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. h2, h3, h4 va19 i 1.9-v analog supply h5 va11 i 1.1-v analog supply h6 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. h7 vd11 i 1.1-v digital supply h8 sdo o serial interface data output. the using the serial interface section describes the serial interface in more detail. this pin is high impedance during normal device operation. this pin outputs 1.9-v cmos levels during serial interface read operations. this pin can be left disconnected if not used. h9, h10 vd11 i 1.1-v digital supply h11 db4+ o high-speed serialized data output for channel b, lane 4, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. h12 db0+ o high-speed serialized data output for channel b, lane 0, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. j1 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. j2, j3 va11 i 1.1-v analog supply j4 va19 i 1.9-v analog supply j5 va11 i 1.1-v analog supply j6 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. j7 ncob1 i tie this pin to gnd. j8 orb1 o fast overrange detection status for channel b for the ovr_t1 threshold. when the analog input exceeds the threshold programmed into ovr_t1, this status indicator goes high. the minimum pulse duration is set by ovr_n. see the adc overrange detection section for more information. this pin can be left disconnected if not used. j9, j10 dgnd ? digital supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board.
8 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated pin functions (continued) pin i/o description no. name j11 db5 ? o high-speed serialized data output for channel b, lane 5, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. j12 db1 ? o high-speed serialized data output for channel b, lane 1, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. k1 sysref+ i the sysref positive input is used to achieve synchronization and deterministic latency across the jesd204b interface. this differential input (sysref+ to sysref ? ) has an internal untrimmed 100- differential termination and can be ac-coupled when sysref_lvpecl_en is set to 0. this input is self-biased when sysref_lvpecl_en is set to 0. the termination changes to 50 to ground on each input pin (sysref+ and sysref ? ) and can be dc-coupled when sysref_lvpecl_en is set to 1. this input is not self-biased when sysref_lvpecl_en is set to 1 and must be biased externally to the input common-mode voltage range provided in the recommended operating conditions table. k2 tdiode+ i temperature diode positive (anode) connection. an external temperature sensor can be connected to tdiode+ and tdiode ? to monitor the junction temperature of the device. this pin can be left disconnected if not used. k3 tdiode ? i temperature diode negative (cathode) connection. this pin can be left disconnected if not used. k4 va19 i 1.9-v analog supply k5 va11 i 1.1-v analog supply k6 pd i this pin disables all analog circuits and serializer outputs when set high for temperature diode calibration only. do not use this pin to power down the device for power savings. tie this pin to gnd during normal operation. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. k7 ncob0 i tie this pin to gnd. k8 orb0 o fast overrange detection status for channel b for the ovr_t0 threshold. when the analog input exceeds the threshold programmed into ovr_t0, this status indicator goes high. the minimum pulse duration is set by ovr_n. see the adc overrange detection section for more information. this pin can be left disconnected if not used. k9, k10 vd11 i 1.1-v digital supply k11 db5+ o high-speed serialized data output for channel b, lane 5, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. k12 db1+ o high-speed serialized data output for channel b, lane 1, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. l1 sysref ? i sysref negative input l2, l3, l4, l5, l6, l7 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. l8 db7+ o high-speed serialized data output for channel b, lane 7, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. l9 db7 ? o high-speed serialized data output for channel b, lane 7, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. l10 db6+ o high-speed serialized data output for channel b, lane 6, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. l11 db6 ? o high-speed serialized data output for channel b, lane 6, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. l12 dgnd ? digital supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board.
9 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated pin functions (continued) pin i/o description no. name m1, m2, m3 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. m4 inb+ i channel b analog input positive connection. the differential full-scale input voltage is determined by the fs_range_b register (see the full-scale voltage (vfs) adjustment section). this input is terminated to ground through a 50- termination resistor. the input common-mode voltage must typically be set to 0 v (gnd) and must follow the recommendations in the recommended operating conditions table. this pin can be left disconnected if not used. using ina is recommended in single-channel mode for optimized performance. m5 inb ? i channel b analog input negative connection. see inb+ for detailed description. this input is terminated to ground through a 50- termination resistor. this pin can be left disconnected if not used. m6, m7 agnd ? analog supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board. m8 db3+ o high-speed serialized data output for channel b, lane 3, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. m9 db3 ? o high-speed serialized data output for channel b, lane 3, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. m10 db2+ o high-speed serialized data output for channel b, lane 2, positive connection. this differential output must be ac-coupled and must always be terminated with a 100- differential termination at the receiver. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. m11 db2 ? o high-speed serialized data output for channel b, lane 2, negative connection. this pin can be left disconnected if not used. for information regarding reliable serializer operation, see footnote (1) in the pin functions table. m12 dgnd ? digital supply ground. tie agnd and dgnd to a common ground plane (gnd) on the circuit board.
10 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated (1) stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions . exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. (2) measured to agnd. (3) measured to dgnd. 6 specifications 6.1 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) (1) min max unit supply voltage range va19 (2) ? 0.3 2.35 v va11 (2) ? 0.3 1.32 vd11 (3) ? 0.3 1.32 voltage between vd11 and va11 ? 1.32 1.32 voltage between agnd and dgnd ? 0.1 0.1 v pin voltage range da[7:0]+, da[7:0] ? , db[7:0]+, db[7:0] ? , tmstp+, tmstp ? (3) ? 0.5 min(1.32, vd11+0.5) v clk+, clk ? , sysref+, sysref ? (2) ? 0.5 min(1.32, va11+0.5) bg, tdiode+, tdiode ? (2) ? 0.5 min(2.35, va19+0.5) ina+, ina ? , inb+, inb ? (2) ? 1 1 calstat, caltrig, ncoa0, ncoa1, ncob0, ncob1, ora0, ora1, orb0, orb1, pd, sclk, scs, sdi, sdo, syncse (2) ? 0.5 va19+0.5 peak input current (any input except ina+, ina ? , inb+, inb ? ) ? 25 25 ma peak input current (ina+, ina ? , inb+, inb ? ) ? 50 50 ma peak rf input power (ina+, ina ? , inb+, inb ? ) single-ended with z s-se = 50 or differential with z s-diff = 100 16.4 dbm peak total input current (sum of absolute value of all currents forced in or out, not including power-supply current) 100 ma operating free-air temperature, t a ? 40 85 c operating junction temperature, t j 150 c storage temperature, t stg ? 65 150 c (1) jedec document jep155 states that 500-v hbm allows safe manufacturing with a standard esd control process. (2) jedec document jep157 states that 250-v cdm allows safe manufacturing with a standard esd control process. 6.2 esd ratings value unit v (esd) electrostatic discharge human-body model (hbm), per ansi/esda/jedec js-001 (1) 2500 v charged-device model (cdm), per jedec specification jesd22-c101 (2) 1000
11 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated (1) measured to agnd. (2) measured to dgnd. (3) ti strongly recommends that clk be ac-coupled with devclk_lvpecl_en set to 0 to allow clk to self-bias to the optimal input common-mode voltage for best performance. ti recommends ac-coupling for sysref unless dc-coupling is required, in which case the lvpecl input mode must be used (sysref_lvpecl_en = 1). (4) tmstp does not have internal biasing that requires tmstp to be biased externally whether ac-coupled with tmstp_lvpecl_en = 0 or dc-coupled with tmstp_lvpecl_en = 1. (5) the adc output code saturates when v id for ina or inb exceeds the programmed full-scale voltage (v fs ) set by fs_range_a for ina or fs_range_b for inb . (6) prolonged use above this junction temperature may increase the device failure-in-time (fit) rate. (7) tested up to 1000 hours continuous operation at t j = 125 c. see the absolute maximum ratings table for the absolute maximum operational temperature. 6.3 recommended operating conditions over operating free-air temperature range (unless otherwise noted) min nom max unit v dd supply voltage range va19, analog 1.9-v supply (1) 1.8 1.9 2.0 v va11, analog 1.1-v supply (1) 1.05 1.1 1.15 vd11, digital 1.1-v supply (2) 1.05 1.1 1.15 v cmi input common-mode voltage ina+, ina ? , inb+, inb ? (1) ? 50 0 100 mv clk+, clk ? , sysref+, sysref ? (1) (3) 0 0.3 0.55 v tmstp+, tmstp ? (1) (4) 0 0.3 0.55 v id input voltage, peak-to-peak differential clk+ to clk ? , sysref+ to sysref ? , tmstp+ to tmstp ? 0.4 1.0 2.0 v pp-diff ina+ to ina ? , inb+ to inb ? (5) 1.0 v ih high-level input voltage caltrig, ncoa0, ncoa1, ncob0, ncob1, pd, sclk, scs, sdi, syncse (1) 0.7 v v il low-level input voltage caltrig, ncoa0, ncoa1, ncob0, ncob1, pd, sclk, scs, sdi, syncse (1) 0.45 v i c_td temperature diode input current tdiode+ to tdiode ? 100 a c l bg max load capacitance 50 pf i o bg max output current 100 a dc input clock duty cycle 30% 50% 70% t a operating free-air temperature ? 40 85 c t j operating junction temperature (6) (7) 105 c (1) for more information about traditional and new thermal metrics, see the semiconductor and ic package thermal metrics application report. 6.4 thermal information thermal metric (1) ADC08DJ3200 unit aav (fcbga) 144 pins r ja junction-to-ambient thermal resistance 25.3 c/w r jc(top) junction-to-case (top) thermal resistance 1.1 c/w r jb junction-to-board thermal resistance 8.2 c/w jt junction-to-top characterization parameter 0.1 c/w jb junction-to-board characterization parameter 8.2 c/w r jc(bot) junction-to-case (bottom) thermal resistance n/a c/w
12 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 6.5 electrical characteristics: dc specifications typical values are at t a = 25 c, va19 = 1.9 v , va11 = 1.1 v, vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 248 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); minimum and maximum values are at nominal supply voltages and over the operating free-air temperature range provided in the recommended operating conditions table parameter test conditions min typ max unit dc accuracy resolution resolution with no missing codes 8 bits dnl differential nonlinearity 0.15 lsb inl integral nonlinearity 0.3 lsb analog inputs (ina+, ina ? , inb+, inb ? ) v off offset error default full-scale voltage, os_cal disabled 0.6 mv v off_adj input offset voltage adjustment range available offset correction range (see os_cal or oadj_x_inx) 55 mv v off_drift offset drift foreground calibration at nominal temperature only 23 v/ c foreground calibration at each temperature 0 v in_fsr analog differential input full- scale range default full-scale voltage (fs_range_a = fs_range_b = 0xa000) 750 800 850 mv pp maximum full-scale voltage (fs_range_a = fs_range_b = 0xffff) 1000 1040 minimum full-scale voltage (fs_range_a = fs_range_b = 0x2000) 480 500 v in_fsr_drift analog differential input full- scale range drift default fs_range_a and fs_range_b setting, foreground calibration at nominal temperature only, inputs driven by 50- source, includes effect of r in drift ? 0.01 %/ c default fs_range_a and fs_range_b setting, foreground calibration at each temperature, inputs driven by 50- source, includes effect of r in drift 0.03 v in_fsr_match analog differential input full- scale range matching matching between ina+, ina ? and inb+, inb ? , default setting, dual-channel mode 0.625% r in single-ended input resistance to agnd each input pin is terminated to agnd, measured at t a = 25 c 48 50 52 r in_tempco input termination linear temperature coefficient 17.6 m / c c in single-ended input capacitance single-channel mode at dc 0.4 pf dual-channel mode at dc 0.4 temperature diode characteristics (tdiode+, tdiode ? ) v be temperature diode voltage slope forced forward current of 100 a. offset voltage (approximately 0.792 v at 0 c) varies with process and must be measured for each part. offset measurement must be done with the device unpowered or with the pd pin asserted to minimize device self- heating. assert the pd pin only long enough to take the offset measurement. ? 1.6 mv/ c band-gap voltage output (bg) v bg reference output voltage i l 100 a 1.1 v v bg_drift reference output temperature drift i l 100 a ? 64 v/ c
13 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated electrical characteristics: dc specifications (continued) typical values are at t a = 25 c, va19 = 1.9 v , va11 = 1.1 v, vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 248 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); minimum and maximum values are at nominal supply voltages and over the operating free-air temperature range provided in the recommended operating conditions table parameter test conditions min typ max unit clock inputs (clk+, clk ? , sysref+, sysref ? , tmstp+, tmstp ? ) z t internal termination differential termination with devclk_lvpecl_en = 0, sysref_lvpecl_en = 0, and tmstp_lvpecl_en = 0 110 single-ended termination to gnd (per pin) with devclk_lvpecl_en = 0, sysref_lvpecl_en = 0, and tmstp_lvpecl_en = 0 55 v cm input common-mode voltage, self-biased self-biasing common-mode voltage for clk when ac-coupled (devclk_lvpecl_en must be set to 0) 0.26 v self-biasing common-mode voltage for sysref when ac-coupled (sysref_lvpecl_en must be set to 0) and with receiver enabled (sysref_recv_en = 1) 0.29 self-biasing common mode voltage for sysref when ac-coupled (sysref_lvpecl_en must be set to 0) and with receiver disabled (sysref_recv_en = 0) va11 c l_diff differential input capacitance between positive and negative differential input pins 0.1 pf c l_se single-ended input capacitance each input to ground 0.5 pf serdes outputs (da[7:0]+, da[7:0] ? , db[7:0]+, db[7:0] ? ) v od differential output voltage, peak-to-peak 100- load 550 600 650 mv pp- diff v cm output common mode voltage ac coupled vd11 / 2 v z diff differential output impedance 100 cmos interface (sclk, sdi, sdo, scs, pd, ncoa0, ncoa1, ncob0, ncob1, calstat, caltrig, ora0, ora1, orb0, orb1, syncse) i ih high-level input current ? 40 40 a i il low-level input current ? 40 40 a c i input capacitance 2 pf v oh high-level output voltage i load = ? 400 a 1.65 v v ol low-level output voltage i load = 400 a 150 mv
14 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 6.6 electrical characteristics: power consumption typical values are at t a = 25 c, va19 = 1.9 v, va11 = 1.1 v, vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 248 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); minimum and maximum values are at nominal supply voltages and over the operating free-air temperature range provided in the recommended operating conditions table parameter test conditions min typ max unit i va19 1.9-v analog supply current power mode 1: single-channel mode, jmode 5 (8 lanes), foreground calibration 899 950 ma i va11 1.1-v analog supply current 501 620 ma i vd11 1.1-v digital supply current 451 650 ma p dis power dissipation 2.8 3.2 w i va19 1.9-v analog supply current power mode 2: dual-channel mode, jmode 7 (8 lanes), foreground calibration 981 ma i va11 1.1-v analog supply current 501 ma i vd11 1.1-v digital supply current 463 ma p dis power dissipation 2.9 w i va19 1.9-v analog supply current power mode 3: single-channel mode, jmode 5 (8 lanes), background calibration 1179 ma i va11 1.1-v analog supply current 602 ma i vd11 1.1-v digital supply current 467 ma p dis power dissipation 3.4 w i va19 1.9-v analog supply current power mode 4: dual-channel mode, jmode 18 (16 lanes), foreground calibration 981 ma i va11 1.1-v analog supply current 501 ma i vd11 1.1-v digital supply current 447 ma p dis power dissipation 2.9 w i va19 1.9-v analog supply current power mode 5: single-channel mode, jmode 4 (4 lanes), foreground calibration, f clk = 2.5 ghz 899 ma i va11 1.1-v analog supply current 519 ma i vd11 1.1-v digital supply current 363 ma p dis power dissipation 2.6 w
15 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated (1) full-power input bandwidth (fpbw) is defined as the input frequency where the reconstructed output of the adc drops 3 db below the power of a full-scale input signal at a low input frequency. useable bandwidth may exceed the ? 3-db full-power input bandwidth. 6.7 electrical characteristics: ac specifications (dual-channel mode) typical values are at t a = 25 c, va19 = 1.9 v, va11 = 1.1 v, vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), f in = 248 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered 1-v pp sine-wave clock, jmode = 18, and background calibration (unless otherwise noted); minimum and maximum values are at nominal supply voltages and over the operating free-air temperature range provided in the recommended operating conditions table parameter test conditions min typ max unit fpbw full-power input bandwidth ( ? 3 db) (1) foreground calibration 8.1 ghz background calibration 8.1 xtalk channel-to-channel crosstalk dual-channel mode, aggressor = 400 mhz, ? 1 dbfs ? 92 db dual-channel mode, aggressor = 3 ghz, ? 1 dbfs ? 67 dual-channel mode, aggressor = 6 ghz, ? 1 dbfs ? 61 cer code error rate maximum cer, does not include serdes bit-error rate (ber) 10 ? 18 errors/ sample noise dc dc input noise standard deviation no input, foreground calibration, excludes dc offset, includes fixed interleaving spur (f s / 2 spur) 0.45 lsb snr signal-to-noise ratio, large signal, excluding dc, hd2 to hd9 and interleaving spurs f in = 347 mhz, a in = ? 1 dbfs 49.1 dbfs f in = 347 mhz, a in = ? 1 dbfs, maximum fs_range_a and fs_range_b setting, foreground calibration 49.3 f in = 997 mhz, a in = ? 1 dbfs 49.0 f in = 2397 mhz, a in = ? 1 dbfs 47.0 48.8 f in = 2397 mhz, a in = ? 1 dbfs, maximum fs_range_a and fs_range_b setting, foreground calibration 49.0 f in = 4997 mhz, a in = ? 1 dbfs 48.3 f in = 6397 mhz, a in = ? 1 dbfs 47.8 f in = 8197 mhz, a in = ? 1 dbfs 47.2 snr signal-to-noise ratio, small signal, excluding dc, hd2 to hd9 and interleaving spurs f in = 347 mhz, a in = ? 16 dbfs 49.1 dbfs f in = 997 mhz, a in = ? 16 dbfs 49.1 f in = 2397 mhz, a in = ? 16 dbfs 49.1 f in = 4997 mhz, a in = ? 16 dbfs 49.4 f in = 6397 mhz, a in = ? 16 dbfs 49.2 f in = 8197 mhz, a in = ? 16 dbfs 49.4 sinad signal-to-noise and distortion ratio, large signal, excluding dc and f s / 2 fixed spurs f in = 347 mhz, a in = ? 1 dbfs 48.8 dbfs f in = 997 mhz, a in = ? 1 dbfs 48.7 f in = 2397 mhz, a in = ? 1 dbfs 46.3 48.5 f in = 4997 mhz, a in = ? 1 dbfs 47.0 f in = 6397 mhz, a in = ? 1 dbfs 46.2 f in = 8197 mhz, a in = ? 1 dbfs 44.8 enob effective number of bits, large signal, excluding dc and f s / 2 fixed spurs f in = 347 mhz, a in = ? 1 dbfs 7.8 bits f in = 997 mhz, a in = ? 1 dbfs 7.8 f in = 2397 mhz, a in = ? 1 dbfs 7.4 7.8 f in = 4997 mhz, a in = ? 1 dbfs 7.5 f in = 6397 mhz, a in = ? 1 dbfs 7.4 f in = 8197 mhz, a in = ? 1 dbfs 7.1
16 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated electrical characteristics: ac specifications (dual-channel mode) (continued) typical values are at t a = 25 c, va19 = 1.9 v, va11 = 1.1 v, vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), f in = 248 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered 1-v pp sine-wave clock, jmode = 18, and background calibration (unless otherwise noted); minimum and maximum values are at nominal supply voltages and over the operating free-air temperature range provided in the recommended operating conditions table parameter test conditions min typ max unit sfdr spurious-free dynamic range, large signal, excluding dc and f s / 2 fixed spurs f in = 347 mhz, a in = ? 1 dbfs 69 dbfs f in = 347 mhz, a in = ? 1 dbfs, maximum fs_range_a and fs_range_b setting, foreground calibration 68 f in = 997 mhz, a in = ? 1 dbfs 67 f in = 2397 mhz, a in = ? 1 dbfs 55 66 f in = 2397 mhz, a in = ? 1 dbfs, maximum fs_range_a and fs_range_b setting, foreground calibration 62 f in = 4997 mhz, a in = ? 1 dbfs 57 f in = 6397 mhz, a in = ? 1 dbfs 55 f in = 8197 mhz, a in = ? 1 dbfs 52 sfdr spurious-free dynamic range, small signal, excluding dc and f s / 2 fixed spurs f in = 347 mhz, a in = ? 16 dbfs 67 dbfs f in = 997 mhz, a in = ? 16 dbfs 67 f in = 2397 mhz, a in = ? 16 dbfs 67 f in = 4997 mhz, a in = ? 16 dbfs 67 f in = 6397 mhz, a in = ? 16 dbfs 67 f in = 8197 mhz, a in = ? 16 dbfs 67 f s / 2 f s / 2 fixed interleaving spur, independent of input signal no input ? 70 ? 55 dbfs hd2 second-order harmonic distortion f in = 347 mhz, a in = ? 1 dbfs ? 75 dbfs f in = 347 mhz, a in = ? 1 dbfs, maximum fs_range_a and fs_range_b setting, foreground calibration ? 73 f in = 997 mhz, a in = ? 1 dbfs ? 75 f in = 2397 mhz, a in = ? 1 dbfs ? 73 ? 60 f in = 2397 mhz, a in = ? 1 dbfs, maximum fs_range_a and fs_range_b setting, foreground calibration ? 72 f in = 4997 mhz, a in = ? 1 dbfs ? 68 f in = 6397 mhz, a in = ? 1 dbfs ? 67 f in = 8197 mhz, a in = ? 1 dbfs ? 61 hd3 third-order harmonic distortion f in = 347 mhz, a in = ? 1 dbfs ? 71 dbfs f in = 347 mhz, a in = ? 1 dbfs, maximum fs_range_a and fs_range_b setting, foreground calibration ? 69 f in = 997 mhz, a in = ? 1 dbfs ? 69 f in = 2397 mhz, a in = ? 1 dbfs ? 67 ? 60 f in = 2397 mhz, a in = ? 1 dbfs, maximum fs_range_a and fs_range_b setting, foreground calibration ? 62 f in = 4997 mhz, a in = ? 1 dbfs ? 57 f in = 6397 mhz, a in = ? 1 dbfs ? 55 f in = 8197 mhz, a in = ? 1 dbfs ? 52
17 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated electrical characteristics: ac specifications (dual-channel mode) (continued) typical values are at t a = 25 c, va19 = 1.9 v, va11 = 1.1 v, vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), f in = 248 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered 1-v pp sine-wave clock, jmode = 18, and background calibration (unless otherwise noted); minimum and maximum values are at nominal supply voltages and over the operating free-air temperature range provided in the recommended operating conditions table parameter test conditions min typ max unit f s / 2 ? f in f s / 2 ? f in interleaving spur, signal dependent f in = 347 mhz, a in = ? 1 dbfs ? 72 dbfs f in = 997 mhz, a in = ? 1 dbfs ? 70 f in = 2397 mhz, a in = ? 1 dbfs ? 69 ? 55 f in = 4997 mhz, a in = ? 1 dbfs ? 66 f in = 6397 mhz, a in = ? 1 dbfs ? 64 f in = 8197 mhz, a in = ? 1 dbfs ? 63 spur worst harmonic, fourth-order distortion or higher f in = 347 mhz, a in = ? 1 dbfs ? 74 dbfs f in = 997 mhz, a in = ? 1 dbfs ? 71 f in = 2397 mhz, a in = ? 1 dbfs ? 73 ? 60 f in = 4997 mhz, a in = ? 1 dbfs ? 78 f in = 6397 mhz, a in = ? 1 dbfs ? 78 f in = 8197 mhz, a in = ? 1 dbfs ? 78 imd3 third-order intermodulation distortion f in = 347 mhz 2.5 mhz, a in = ? 7 dbfs per tone ? 92 dbfs f in = 997 mhz 2.5 mhz, a in = ? 7 dbfs per tone ? 80 f in = 2485 mhz 2.5 mhz, a in = ? 7 dbfs per tone ? 71 f in = 4997 mhz 2.5 mhz, a in = ? 7 dbfs per tone ? 63 f in = 5997 mhz 2.5 mhz, a in = ? 7 dbfs per tone ? 60 f in = 7997 mhz 2.5 mhz, a in = ? 7 dbfs per tone ? 49
18 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated (1) full-power input bandwidth (fpbw) is defined as the input frequency where the reconstructed output of the adc drops 3 db below the power of a full-scale input signal at a low input frequency. useable bandwidth may exceed the ? 3-db full-power input bandwidth. 6.8 electrical characteristics: ac specifications (single-channel mode) typical values are at t a = 25 c, va19 = 1.9 v, va11 = 1.1 v, vd11 = 1.1 v, default full-scale voltage (fs_range_a = 0xa000), input signal applied to ina , f in = 248 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); minimum and maximum values are at nominal supply voltages and over the operating free-air temperature range provided in the recommended operating conditions table parameter test conditions min typ max unit fpbw full-power input bandwidth ( ? 3 db) (1) foreground calibration 7.9 ghz background calibration 7.9 cer code error rate maximum cer, does not include serdes bit-error rate (ber) 10 ? 18 errors/ sample noise dc dc input noise standard deviation no input, foreground calibration, excludes dc offset, includes fixed interleaving spurs (f s / 2 and f s / 4 spurs) 0.35 lsb snr signal-to-noise ratio, large signal, excluding dc, hd2 to hd9 and interleaving spurs f in = 347 mhz, a in = ? 1 dbfs 49.0 dbfs f in = 347 mhz, a in = ? 1 dbfs, maximum fs_range_a setting, foreground calibration 49.2 f in = 997 mhz, a in = ? 1 dbfs 49.0 f in = 2397 mhz, a in = ? 1 dbfs 47.0 48.8 f in = 2397 mhz, a in = ? 1 dbfs, maximum fs_range_a setting, foreground calibration 49.0 f in = 4997 mhz, a in = ? 1 dbfs 48.2 f in = 6397 mhz, a in = ? 1 dbfs 47.9 f in = 8197 mhz, a in = ? 1 dbfs 47.1 snr signal-to-noise ratio, small signal, excluding dc, hd2 to hd9 and interleaving spurs f in = 347 mhz, a in = ? 16 dbfs 49.2 dbfs f in = 997 mhz, a in = ? 16 dbfs 49.2 f in = 2397 mhz, a in = ? 16 dbfs 49.2 f in = 4997 mhz, a in = ? 16 dbfs 49.2 f in = 6397 mhz, a in = ? 16 dbfs 49.2 f in = 8197 mhz, a in = ? 16 dbfs 49.2 sinad signal-to-noise and distortion ratio, large signal, excluding dc and f s / 2 fixed spurs f in = 347 mhz, a in = ? 1 dbfs 48.7 dbfs f in = 997 mhz, a in = ? 1 dbfs 48.4 f in = 2397 mhz, a in = ? 1 dbfs 45.1 48.0 f in = 4997 mhz, a in = ? 1 dbfs 47.2 f in = 6397 mhz, a in = ? 1 dbfs 46.6 f in = 8197 mhz, a in = ? 1 dbfs 44.8 enob effective number of bits, large signal, excluding dc and f s / 2 fixed spurs f in = 347 mhz, a in = ? 1 dbfs 7.8 dbfs f in = 997 mhz, a in = ? 1 dbfs 7.8 f in = 2397 mhz, a in = ? 1 dbfs 7.2 7.7 f in = 4997 mhz, a in = ? 1 dbfs 7.6 f in = 6397 mhz, a in = ? 1 dbfs 7.5 f in = 8197 mhz, a in = ? 1 dbfs 7.1
19 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated electrical characteristics: ac specifications (single-channel mode) (continued) typical values are at t a = 25 c, va19 = 1.9 v, va11 = 1.1 v, vd11 = 1.1 v, default full-scale voltage (fs_range_a = 0xa000), input signal applied to ina , f in = 248 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); minimum and maximum values are at nominal supply voltages and over the operating free-air temperature range provided in the recommended operating conditions table parameter test conditions min typ max unit sfdr spurious free dynamic range, large signal, excluding dc, f s / 4 and f s / 2 fixed spurs f in = 347 mhz, a in = ? 1 dbfs 66 dbfs f in = 347 mhz, a in = ? 1 dbfs, maximum fs_range_a setting, foreground calibration 64 f in = 997 mhz, a in = ? 1 dbfs 62 f in = 2397 mhz, a in = ? 1 dbfs 45 58 f in = 2397 mhz, a in = ? 1 dbfs, maximum fs_range_a setting, foreground calibration 54 f in = 4997 mhz, a in = ? 1 dbfs 59 f in = 6397 mhz, a in = ? 1 dbfs 57 f in = 8197 mhz, a in = ? 1 dbfs 52 sfdr spurious free dynamic range, small signal, excluding dc, f s / 4 and f s / 2 fixed spurs f in = 347 mhz, a in = ? 16 dbfs 68 dbfs f in = 997 mhz, a in = ? 16 dbfs 68 f in = 2397 mhz, a in = ? 16 dbfs 68 f in = 4997 mhz, a in = ? 16 dbfs 68 f in = 6397 mhz, a in = ? 16 dbfs 68 f in = 8197 mhz, a in = ? 16 dbfs 67 f s / 2 f s / 2 fixed interleaving spur, independent of input signal no input, foreground calibration, os_cal disabled, spur can be improved by running os_cal ? 65 dbfs f s / 4 f s / 4 fixed interleaving spur, independent of input signal no input ? 64 ? 55 dbfs hd2 second-order harmonic distortion f in = 347 mhz, a in = ? 1 dbfs ? 74 dbfs f in = 347 mhz, a in = ? 1 dbfs, maximum fs_range_a setting, foreground calibration ? 71 f in = 997 mhz, a in = ? 1 dbfs ? 72 f in = 2397 mhz, a in = ? 1 dbfs ? 75 ? 60 f in = 2397 mhz, a in = ? 1 dbfs, maximum fs_range_a setting, foreground calibration ? 72 f in = 4997 mhz, a in = ? 1 dbfs ? 72 f in = 6397 mhz, a in = ? 1 dbfs ? 68 f in = 8197 mhz, a in = ? 1 dbfs ? 68 hd3 third-order harmonic distortion f in = 347 mhz, a in = ? 1 dbfs ? 71 dbfs f in = 347 mhz, a in = ? 1 dbfs, maximum fs_range_a setting, foreground calibration ? 69 f in = 997 mhz, a in = ? 1 dbfs ? 68 f in = 2397 mhz, a in = ? 1 dbfs ? 68 ? 60 f in = 2397 mhz, a in = ? 1 dbfs, maximum fs_range_a setting, foreground calibration ? 63 f in = 4997 mhz, a in = ? 1 dbfs ? 59 f in = 6397 mhz, a in = ? 1 dbfs ? 58 f in = 8197 mhz, a in = ? 1 dbfs ? 55
20 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated electrical characteristics: ac specifications (single-channel mode) (continued) typical values are at t a = 25 c, va19 = 1.9 v, va11 = 1.1 v, vd11 = 1.1 v, default full-scale voltage (fs_range_a = 0xa000), input signal applied to ina , f in = 248 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); minimum and maximum values are at nominal supply voltages and over the operating free-air temperature range provided in the recommended operating conditions table parameter test conditions min typ max unit f s / 2 ? f in f s / 2 ? f in interleaving spur, signal dependent f in = 347 mhz, a in = ? 1 dbfs ? 68 dbfs f in = 997 mhz, a in = ? 1 dbfs ? 62 f in = 2397 mhz, a in = ? 1 dbfs ? 58 ? 45 f in = 4997 mhz, a in = ? 1 dbfs ? 62 f in = 6397 mhz, a in = ? 1 dbfs ? 63 f in = 8197 mhz, a in = ? 1 dbfs ? 53 f s / 4 f in f s / 4 f in interleaving spurs, signal dependent f in = 347 mhz, a in = ? 1 dbfs ? 72 dbfs f in = 997 mhz, a in = ? 1 dbfs ? 72 f in = 2397 mhz, a in = ? 1 dbfs ? 72 ? 60 f in = 4997 mhz, a in = ? 1 dbfs ? 68 f in = 6397 mhz, a in = ? 1 dbfs ? 65 f in = 8197 mhz, a in = ? 1 dbfs ? 63 spur worst harmonic, fourth-order distortion or higher f in = 347 mhz, a in = ? 1 dbfs ? 73 dbfs f in = 997 mhz, a in = ? 1 dbfs ? 72 f in = 2397 mhz, a in = ? 1 dbfs ? 73 ? 60 f in = 4997 mhz, a in = ? 1 dbfs ? 80 f in = 6397 mhz, a in = ? 1 dbfs ? 82 f in = 8197 mhz, a in = ? 1 dbfs ? 79 imd3 third-order intermodulation distortion f in = 347 mhz 2.5 mhz, a in = ? 7 dbfs per tone ? 83 dbfs f in = 997 mhz 2.5 mhz, a in = ? 7 dbfs per tone ? 79 f in = 2485 mhz 2.5 mhz, a in = ? 7 dbfs per tone ? 70 f in = 4997 mhz 2.5 mhz, a in = ? 7 dbfs per tone ? 64 f in = 5997 mhz 2.5 mhz, a in = ? 7 dbfs per tone ? 62 f in = 7997 mhz 2.5 mhz, a in = ? 7 dbfs per tone ? 52
21 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated (1) unless functionally limited to a smaller range in table 10 based on the programmed jmode. (2) use sysref_pos to select an optimal sysref_sel value for sysref capture, see the sysref position detector and sampling position selection (sysref windowing) section for more information on sysref windowing. the invalid region, specified by t inv(sysref) , indicates the portion of the clk period (t clk ), as measured by sysref_sel, that may result in a setup and hold violation. verify that the timing skew between sysref and clk over system operating conditions from the nominal conditions (that used to find optimal sysref_sel) does not result in the invalid region occurring at the selected sysref_sel position in sysref_pos, otherwise a temperature-dependent sysref_sel selection may be needed to track the skew between clk and sysref . 6.9 timing requirements min nom max unit device (sampling) clock (clk+, clk ? ) f clk input clock frequency (clk+, clk ? ), both single-channel and dual-channel modes (1) 800 3200 mhz sysref (sysref+, sysref ? ) t inv(sysref) width of invalid sysref capture region of clk period, indicating setup or hold time violation, as measured by the sysref_pos status register (2) 48 ps t inv(temp) drift of invalid sysref capture region over temperature, positive number indicates a shift toward the msb of the sysref_pos register 0 ps/ c t inv(va11) drift of invalid sysref capture region over the va11 supply voltage, positive number indicates a shift toward the msb of the sysref_pos register 0.36 ps/mv t step(sp) delay of the sysref_pos lsb sysref_zoom = 0 77 ps sysref_zoom = 1 24 t (ph_sys) minimum sysref assertion duration after a sysref rising edge event 4 ns t (pl_sys) minimum sysref de-assertion duration after a sysref falling edge event 1 ns jesd204b sync timing ( syncse or tmstp ) t h( syncse) minimum hold time from a multiframe boundary (sysref rising edge captured high) to de- assertion of the jesd204b sync signal ( syncse if sync_sel = 0 or tmstp if sync_sel = 1) for nco synchronization (nco_sync_ila = 1) jmode = 4 or 6 21 t clk cycles jmode = 5 or 7 17 jmode = 17 or 18 9 t su( syncse) minimum setup time from de-assertion of the jesd204b sync signal ( syncse if sync_sel = 0 or tmstp if sync_sel = 1) to multiframe boundary (sysref rising edge captured high) for nco synchronization (nco_sync_ila = 1) jmode = 4 or 6 ? 2 t clk cycles jmode = 5 or 7 2 jmode = 17 or 18 10 t ( syncse) syncse minimum assertion time to trigger link resynchronization 4 frames serial programming interface (sclk, sdi, scs) f clk(sclk) maximum serial clock frequency 15.625 mhz t (ph) minimum serial clock high value pulse duration 32 ns t (pl) minimum serial clock low value pulse duration 32 ns t su( scs) minimum setup time from scs to rising edge of sclk 30 ns t h( scs) minimum hold time from rising edge of sclk to scs 3 ns t su(sdi) minimum setup time from sdi to rising edge of sclk 30 ns t h(sdi) minimum hold time from rising edge of sclk to sdi 3 ns
22 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated (1) t aj increases because of additional attenuation on the internal clock path. 6.10 switching characteristics typical values are at t a = 25 c, va19 = 1.9 v, va11 = 1.1 v, vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 248 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); minimum and maximum values are at nominal supply voltages and over the operating free-air temperature range provided in the recommended operating conditions table parameter test conditions min typ max unit device (sampling) clock (clk+, clk ? ) t ad sampling (aperture) delay from clk rising edge (dual-channel mode) or rising and falling edge (single-channel mode) to sampling instant tad_coarse = 0x00, tad_fine = 0x00, and tad_inv = 0 360 ps t tad(max) maximum t ad adjust programmable delay, not including clock inversion (tad_inv = 0) coarse adjustment (tad_coarse = 0xff) 289 ps fine adjustment (tad_fine = 0xff) 4.9 t tad(step) t ad adjust programmable delay step size coarse adjustment (tad_coarse) 1.13 ps fine adjustment (tad_fine) 19 fs t aj aperture jitter, rms minimum t ad adjust coarse setting (tad_coarse = 0x00, tad_inv = 0) 50 fs maximum t ad adjust coarse setting (tad_coarse = 0xff) excluding tad_inv (tad_inv = 0) 70 (1) serial data outputs (da[7:0]+, da[7:0] ? , db[7:0]+, db[7:0] ? ) f serdes serialized output bit rate 1 12.8 gbps ui serialized output unit interval 78.125 1000 ps t tlh low-to-high transition time (differential) 20% to 80%, prbs-7 test pattern, 12.8 gbps, ser_pe = 0x04 37 ps t thl high-to-low transition time (differential) 20% to 80%, prbs-7 test pattern, 12.8 gbps, ser_pe = 0x04 37 ps ddj data dependent jitter, peak-to-peak prbs-7 test pattern, 12.8 gbps, ser_pe = 0x04, jmode = 2 7.8 ps rj random jitter, rms prbs-7 test pattern, 12.8 gbps, ser_pe = 0x04, jmode = 2 1.1 ps tj total jitter, peak-to-peak, with gaussian portion defined with respect to a ber = 1e-15 (q = 7.94) prbs-7 test pattern, 8 gbps, ser_pe = 0x04, jmode = 4, 5, 6, 7 28 ps
23 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated switching characteristics (continued) typical values are at t a = 25 c, va19 = 1.9 v, va11 = 1.1 v, vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 248 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); minimum and maximum values are at nominal supply voltages and over the operating free-air temperature range provided in the recommended operating conditions table parameter test conditions min typ max unit (2) t adc is an exact, unrounded, deterministic delay. the delay can be negative if the reference sample is sampled after the sysref high capture point, in which case the total latency is smaller than the delay given by t tx . (3) the values given for t tx include deterministic and non-deterministic delays. the delay varies over process, temperature, and voltage. jesd204b accounts for these variations when operating in subclass-1 mode in order to achieve deterministic latency. proper receiver rbd values must be chosen such that the elastic buffer release point does not occur within the invalid region of the local multiframe clock (lmfc) cycle. adc core latency t adc deterministic delay from the clk edge that samples the reference sample to the clk edge that samples sysref going high (2) jmode = 4 ? 4.5 t clk cycles jmode = 5 ? 24.5 jmode = 6 ? 5 jmode = 7 ? 25 jmode = 17 ? 48.5 jmode = 18 ? 49 jesd204b and serializer latency t tx delay from the clk rising edge that samples sysref high to the first bit of the multiframe on the jesd204b serial output lane corresponding to the reference sample of t adc (3) jmode = 4 67 80 t clk cycles jmode = 5 106 119 jmode = 6 67 80 jmode = 7 106 119 jmode = 17 195 208 jmode = 18 195 208 serial programming interface (sdo) t (ozd) maximum delay from the falling edge of the 16th sclk cycle during read operation for sdo transition from tri-state to valid data 7 ns t (odz) maximum delay from the scs rising edge for sdo transition from valid data to tri-state 7 ns t (od) maximum delay from the falling edge of the 16th sclk cycle during read operation to sdo valid 12 ns
24 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated (1) only the serdes lane da0 is shown, but da0 is representative of all lanes. the number of output lanes used and bit-packing format is dependent on the programmed jmode value. figure 1. adc timing diagram (2) the internal lmfc is assumed to be aligned with the clk rising edge that captures the sysref high value. (3) only serdes lane da0 is shown, but da0 is representative of all lanes. all lanes output /r at approximately the same point in time. the number of lanes is dependent on the programmed jmode value. figure 2. syncse and tmstp timing diagram for nco synchronization figure 3. serial interface timing t h(scs) 1 st clock sclk 16 th clock 24 th clock scs t su(scs) t (odz) sdi t (ozd) d7 d0 d1 command field t (od) d7 d0 d1 sdo write command read command t su(sdi) t h(sdi) t (ph) t (pl) t (ph) + t (pl) = t (p) = 1 / | clk(sclk) hi-z hi-z t h(scs) t su(scs) t su(sdi) t h(sdi) clk+ clk da0+/ (1) t ad t adc sysref+ sysref t su(sysref) t tx s 0 s 1 s 2 t clk s 0 s 1 s 2 t h(sysref) start of multi-frame clk+ clk da0+/ (2) sysref+ sysref /r syncse (sync_sel = 0) t h(syncse) t su(syncse) t tx start of ilas lmfc (1) (internal) one multi-frame one multi-frame tmstp+/ (sync_sel = 1)
25 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 6.11 typical characteristics typical values at t a = 25 c, va19 = 1.9 v, va11 = vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 347 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered, 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); snr results exclude dc, hd2 to hd9 and interleaving spurs; sinad, enob, and sfdr results exclude dc and fixed-frequency interleaving spurs jmode7, f s = 3200 msps, foreground (fg) and background (bg) calibration figure 4. enob vs input frequency jmode5, f s = 6400 msps, fg and bg calibration figure 5. enob vs input frequency jmode7, f s = 3200 msps, fg calibration figure 6. snr, sinad, sfdr vs input frequency jmode5, f s = 6400 msps, fg calibration figure 7. snr, sinad, sfdr vs input frequency jmode7, f s = 3200 msps, fg calibration figure 8. hd2, hd3, thd vs input frequency jmode5, f s = 6400 msps, fg calibration figure 9. hd2, hd3, thd vs input frequency f in (mhz) effective number of bits (bits) 0 2000 4000 6000 8000 10000 6.5 7 7.5 8 d010 bg calibration fg calibration f in (mhz) effective number of bits (bits) 0 2000 4000 6000 8000 10000 6.5 7 7.5 8 d002 bg calibration fg calibration f in (mhz) magnitude (dbfs) 0 2000 4000 6000 8000 10000 40 45 50 55 60 65 70 75 d131 snr sinad sfdr f in (mhz) magnitude (dbfs) 0 2000 4000 6000 8000 10000 40 45 50 55 60 65 70 75 d129 snr sinad sfdr f in (mhz) magnitude (dbfs) 0 2000 4000 6000 8000 10000 -90 -85 -80 -75 -70 -65 -60 -55 -50 -45 d130 hd2 hd3 thd f in (mhz) magnitude (dbfs) 0 2000 4000 6000 8000 10000 -85 -80 -75 -70 -65 -60 -55 -50 -45 d132 hd2 hd3 thd
26 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated typical characteristics (continued) typical values at t a = 25 c, va19 = 1.9 v, va11 = vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 347 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered, 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); snr results exclude dc, hd2 to hd9 and interleaving spurs; sinad, enob, and sfdr results exclude dc and fixed-frequency interleaving spurs jmode7, f s = 3200 msps, bg calibration figure 10. snr, sinad, sfdr vs input frequency jmode5, f s = 6400 msps, bg calibration figure 11. snr, sinad, sfdr vs input frequency jmode7, f s = 3200 msps, bg calibration figure 12. hd2, hd3, thd vs input frequency jmode5, f s = 6400 msps, bg calibration figure 13. hd2, hd3, thd vs input frequency jmode7, f in = 347 mhz, bg calibration figure 14. enob vs sampling rate jmode5, f in = 347 mhz, bg calibration figure 15. enob vs sampling rate f in (mhz) magnitude (dbfs) 0 2000 4000 6000 8000 10000 40 45 50 55 60 65 70 75 d009 snr sinad sfdr f in (mhz) magnitude (dbfs) 0 2000 4000 6000 8000 10000 40 45 50 55 60 65 70 75 d001 snr sinad sfdr f in (mhz) magnitude (dbfs) 0 2000 4000 6000 8000 10000 -80 -75 -70 -65 -60 -55 -50 -45 d011 hd2 hd3 thd f in (mhz) magnitude (dbfs) 0 2000 4000 6000 8000 10000 -80 -75 -70 -65 -60 -55 -50 -45 d003 hd2 hd3 thd f s (msps) effective number of bits (bits) 1600 2400 3200 4000 4800 5600 6400 7.25 7.5 7.75 8 8.25 d005 f s (msps) effective number of bits (bits) 800 1200 1600 2000 2400 2800 3200 7.25 7.5 7.75 8 8.25 d013
27 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated typical characteristics (continued) typical values at t a = 25 c, va19 = 1.9 v, va11 = vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 347 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered, 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); snr results exclude dc, hd2 to hd9 and interleaving spurs; sinad, enob, and sfdr results exclude dc and fixed-frequency interleaving spurs jmode7, f in = 347 mhz, bg calibration figure 16. snr, sinad, sfdr vs sampling rate jmode5, f in = 347 mhz, bg calibration figure 17. snr, sinad, sfdr vs sampling rate jmode7, f in = 347 mhz, bg calibration figure 18. hd2, hd3, thd vs sampling rate jmode5, f in = 347 mhz, bg calibration figure 19. hd2, hd3, thd vs sampling rate jmode7, f in = 350 mhz, fg calibration, snr = 49.1 dbfs, sfdr = 70.1 dbfs, enob = 7.80 bits figure 20. single-tone fft at a in = ? 1 dbfs jmode5, f in = 350 mhz, fg calibration, snr = 49.0 dbfs, sfdr = 64.0 dbfs, enob = 7.80 bits figure 21. single-tone fft at a in = ? 1 dbfs f s (msps) magnitude (dbfs) 1600 2400 3200 4000 4800 5600 6400 35 40 45 50 55 60 65 70 75 d004 snr sinad sfdr f s (msps) magnitude (dbfs) 800 1200 1600 2000 2400 2800 3200 35 40 45 50 55 60 65 70 75 d012 snr sinad sfdr frequency (mhz) magnitude (dbfs) 0 400 800 1200 1600 -150 -120 -90 -60 -30 0 d139 f s (msps) magnitude (dbfs) 800 1200 1600 2000 2400 2800 3200 -90 -85 -80 -75 -70 -65 -60 -55 d014d014 hd2 hd3 thd frequency (mhz) magnitude (dbfs) 0 800 1600 2400 3200 -150 -120 -90 -60 -30 0 d134 f s (msps) magnitude (dbfs) 1600 2400 3200 4000 4800 5600 6400 -90 -85 -80 -75 -70 -65 -60 -55 d006 hd2 hd3 thd
28 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated typical characteristics (continued) typical values at t a = 25 c, va19 = 1.9 v, va11 = vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 347 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered, 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); snr results exclude dc, hd2 to hd9 and interleaving spurs; sinad, enob, and sfdr results exclude dc and fixed-frequency interleaving spurs jmode7, f in = 2400 mhz, fg calibration, snr = 48.8 dbfs, sfdr = 63.7 dbfs, enob = 7.74 bits figure 22. single-tone fft at a in = ? 1 dbfs jmode5, f in = 2400 mhz, fg calibration, snr = 48.8 dbfs, sfdr = 52.4 dbfs, enob = 7.53 bits figure 23. single-tone fft at a in = ? 1 dbfs jmode7, f in = 5000 mhz, fg calibration, snr = 48.4 dbfs, sfdr = 57.1 dbfs, enob = 7.52 bits figure 24. single-tone fft at a in = ? 1 dbfs jmode5, f in = 5000 mhz, fg calibration, snr = 48.3 dbfs, sfdr = 57.2 dbfs, enob = 7.48 bits figure 25. single-tone fft at a in = ? 1 dbfs jmode7, f in = 8200 mhz, fg calibration, snr = 47.4 dbfs, sfdr = 52.4 dbfs, enob = 7.19 bits figure 26. single-tone fft at a in = ? 1 dbfs jmode5, f in = 8200 mhz, fg calibration, snr = 47.4 dbfs, sfdr = 51.4 dbfs, enob = 7.10 bits figure 27. single-tone fft at a in = ? 1 dbfs frequency (mhz) magnitude (dbfs) 0 400 800 1200 1600 -150 -120 -90 -60 -30 0 d145 frequency (mhz) magnitude (dbfs) 0 800 1600 2400 3200 -150 -120 -90 -60 -30 0 d144 frequency (mhz) magnitude (dbfs) 0 400 800 1200 1600 -150 -120 -90 -60 -30 0 d141 frequency (mhz) magnitude (dbfs) 0 800 1600 2400 3200 -150 -120 -90 -60 -30 0 d136 frequency (mhz) magnitude (dbfs) 0 640 1280 1920 2560 3200 -150 -120 -90 -60 -30 0 d135 frequency (mhz) magnitude (dbfs) 0 320 640 960 1280 1600 -150 -120 -90 -60 -30 0 d140
29 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated typical characteristics (continued) typical values at t a = 25 c, va19 = 1.9 v, va11 = vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 347 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered, 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); snr results exclude dc, hd2 to hd9 and interleaving spurs; sinad, enob, and sfdr results exclude dc and fixed-frequency interleaving spurs jmode7, f in = 8200 mhz, fg calibration, snr = 49.2 dbfs, sfdr = 65.9 dbfs, enob = 7.80 bits figure 28. single-tone fft at a in = ? 16 dbfs jmode5, f in = 8200 mhz, fg calibration, snr = 49.0 dbfs, sfdr = 67.5 dbfs, enob = 7.79 bits figure 29. single-tone fft at a in = ? 16 dbfs jmode5, f s = 6400 msps, fg calibration figure 30. dnl vs code jmode5, f s = 6400 msps, fg calibration figure 31. inl vs code jmode5, f s = 6400 msps, f in = 2400 mhz, bg calibration figure 32. snr, sinad, sfdr vs temperature jmode5, f s = 6400 msps, f in = 2400 mhz, bg calibration figure 33. hd2, hd3, thd vs temperature code integral non-linearity (lsb) 0 255 -0.5 -0.25 0 0.25 0.5 d049 frequency (mhz) magnitude (dbfs) 0 400 800 1200 1600 -150 -120 -90 -60 -30 0 d142 code differential non-linearity (lsb) 0 255 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 d048 frequency (mhz) magnitude (dbfs) 0 800 1600 2400 3200 -150 -120 -90 -60 -30 0 d137 ambient temperature (c) magnitude (dbfs) -75 -50 -25 0 25 50 75 100 125 -90 -85 -80 -75 -70 -65 -60 -55 d041 hd2 hd3 thd ambient temperature (c) magnitude (dbfs) -75 -50 -25 0 25 50 75 100 125 45 50 55 60 65 70 75 d039 snr sinad sfdr
30 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated typical characteristics (continued) typical values at t a = 25 c, va19 = 1.9 v, va11 = vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 347 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered, 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); snr results exclude dc, hd2 to hd9 and interleaving spurs; sinad, enob, and sfdr results exclude dc and fixed-frequency interleaving spurs jmode5, f in = 2400 mhz, f s = 6400 msps figure 34. enob vs temperature and calibration type jmode5, f in = 600 mhz, f s = 6400 msps figure 35. enob vs temperature and calibration type jmode5, f in = 600 mhz, f s = 6400 msps figure 36. snr vs temperature and calibration type jmode5, f in = 600 mhz, f s = 6400 msps figure 37. sfdr vs temperature and calibration type jmode5, f in = 600 mhz, f s = 6400 msps figure 38. hd2 vs temperature and calibration type jmode5, f in = 600 mhz, f s = 6400 msps figure 39. hd3 vs temperature and calibration type ambient temperature (c) third-order harmonic distortion (dbfs) -75 -50 -25 0 25 50 75 100 125 -80 -75 -70 -65 -60 -55 -50 -45 d120 fg calibration at each temperature fg calibration at 25c ambient temperature (c) signal-to-noise ratio (dbfs) -75 -50 -25 0 25 50 75 100 125 46 47 48 49 50 51 52 d063 fg calibration at each temperature fg calibration at 25c ambient temperature (c) second-order harmonic distortion (dbfs) -75 -50 -25 0 25 50 75 100 125 -90 -85 -80 -75 -70 -65 -60 -55 d119 fg calibration at each temperature fg calibration at 25c ambient temperature (c) effective number of bits (bits) -75 -50 -25 0 25 50 75 100 125 7 7.25 7.5 7.75 8 d040 bg calibration fg calibration at each temperature ambient temperature (c) spurious-free dynamic range (dbfs) -75 -50 -25 0 25 50 75 100 125 50 55 60 65 70 d064 fg calibration at each temperature fg calibration at 25c ambient temperature (c) effective number of bits (bits) -75 -50 -25 0 25 50 75 100 125 6.5 7 7.5 8 8.5 d121 fg calibration at each temperature fg calibration at 25c
31 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated typical characteristics (continued) typical values at t a = 25 c, va19 = 1.9 v, va11 = vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 347 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered, 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); snr results exclude dc, hd2 to hd9 and interleaving spurs; sinad, enob, and sfdr results exclude dc and fixed-frequency interleaving spurs jmode5, f s = 6400 msps, f in = 2400 mhz, fg calibration figure 40. snr, sinad, sfdr vs supply voltage jmode5, f s = 6400 msps, f in = 2400 mhz, fg calibration figure 41. enob vs supply voltage jmode5, f s = 6400 msps, f in = 2400 mhz, fg calibration figure 42. hd2, hd3, thd vs supply voltage jmode5, f in = 347 mhz, fg calibration figure 43. supply current vs sampling rate jmode5, f in = 347 mhz, fg calibration figure 44. power consumption vs sampling rate jmode7, f in = 347 mhz, fg calibration figure 45. supply current vs sampling rate supply voltage (%) magnitude (dbfs) -5 -2.5 0 2.5 5 40 42 44 46 48 50 52 54 56 d036 snr sinad sfdr supply voltage (%) effective number of bits (bits) -5 -2.5 0 2.5 5 7 7.25 7.5 7.75 8 d037 f s (msps) power consumption (w) 1600 2400 3200 4000 4800 5600 6400 2 2.2 2.4 2.6 2.8 3 3.2 d008 f s (msps) supply current (a) 800 1200 1600 2000 2400 2800 3200 0 0.2 0.4 0.6 0.8 1 1.2 d015 ia19 ia11 id11 supply voltage (%) magnitude (dbfs) -5 -2.5 0 2.5 5 -90 -85 -80 -75 -70 -65 -60 -55 -50 d038 hd2 hd3 thd f s (msps) supply current (a) 1600 2400 3200 4000 4800 5600 6400 0 0.2 0.4 0.6 0.8 1 1.2 d007 ia19 ia11 id11
32 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated typical characteristics (continued) typical values at t a = 25 c, va19 = 1.9 v, va11 = vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 347 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered, 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); snr results exclude dc, hd2 to hd9 and interleaving spurs; sinad, enob, and sfdr results exclude dc and fixed-frequency interleaving spurs jmode7, f in = 347 mhz, fg calibration figure 46. power consumption vs sampling rate jmode5, f s = 6400 msps, f in = 2400 mhz, bg calibration figure 47. supply current vs temperature jmode5, f s = 6400 msps, f in = 2400 mhz, bg calibration figure 48. power consumption vs temperature jmode5, f s = 6400 msps, fg calibration figure 49. supply current vs supply voltage jmode5, f s = 6400 msps, fg calibration figure 50. power consumption vs supply voltage jmode5, f in = 607 mhz figure 51. ia19 supply current vs clock frequency supply voltage (%) power consumption (w) -5 -2.5 0 2.5 5 2.4 2.6 2.8 3 3.2 d044 f clk (mhz) supply current (a) 800 1200 1600 2000 2400 2800 3200 0.7 0.8 0.9 1 1.1 1.2 d123 fg calibration bg calibration lpbg calibration ambient temperature (c) supply current (a) -75 -50 -25 0 25 50 75 100 125 0 0.2 0.4 0.6 0.8 1 1.2 1.4 d047 ia19 ia11 id11 f s (msps) power consumption (w) 800 1200 1600 2000 2400 2800 3200 2 2.2 2.4 2.6 2.8 3 3.2 d016 supply voltage (%) supply current (a) -5 -2.5 0 2.5 5 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 d045 ia19 ia11 id11 ambient temperature (c) power consumption (w) -75 -50 -25 0 25 50 75 100 125 2 2.25 2.5 2.75 3 3.25 3.5 3.75 4 d046 bg calibration fg calibration
33 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated typical characteristics (continued) typical values at t a = 25 c, va19 = 1.9 v, va11 = vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 347 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered, 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); snr results exclude dc, hd2 to hd9 and interleaving spurs; sinad, enob, and sfdr results exclude dc and fixed-frequency interleaving spurs jmode5, f in = 607 mhz figure 52. ia11 supply current vs clock frequency jmode5, f in = 607 mhz figure 53. id11 supply current vs clock frequency jmode5, f in = 607 mhz figure 54. power consumption vs clock frequency f in = 2400 mhz, f clk = 3200 mhz, fg calibration figure 55. supply current vs jmode f in = 2400 mhz, f clk = 3200 mhz, bg calibration figure 56. supply current vs jmode f in = 2400 mhz, f clk = 3200 mhz figure 57. power consumption vs jmode f clk (mhz) supply current (a) 800 1200 1600 2000 2400 2800 3200 0 0.2 0.4 0.6 0.8 d117 fg calibration bg calibration lpbg calibration jmode supply current (a) 4 6 8 10 12 14 16 18 0 0.25 0.5 0.75 1 1.25 1.5 d034 ia19 ia11 id11 f clk (mhz) supply current (a) 800 1200 1600 2000 2400 2800 3200 0 0.2 0.4 0.6 0.8 d124 fg calibration bg calibration lpbg calibration jmode power consumption (w) 4 6 8 10 12 14 16 18 2.5 2.75 3 3.25 3.5 3.75 4 d033 fg calibration bg calibration lpbg calibration f clk (mhz) power consumption (w) 800 1200 1600 2000 2400 2800 3200 2 2.5 3 3.5 4 d118 fg calibration bg calibration lpbg calibration jmode supply current (a) 4 6 8 10 12 14 16 18 0 0.25 0.5 0.75 1 1.25 1.5 d122 ia19 ia11 id11
34 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated typical characteristics (continued) typical values at t a = 25 c, va19 = 1.9 v, va11 = vd11 = 1.1 v, default full-scale voltage (fs_range_a = fs_range_b = 0xa000), input signal applied to ina in single-channel modes, f in = 347 mhz, a in = ? 1 dbfs, f clk = maximum-rated clock frequency, filtered, 1-v pp sine-wave clock, jmode = 17, and background calibration (unless otherwise noted); snr results exclude dc, hd2 to hd9 and interleaving spurs; sinad, enob, and sfdr results exclude dc and fixed-frequency interleaving spurs jmode4, f clk = 3200 mhz, f in = 3199.9 mhz figure 58. background calibration core transition (ac signal) jmode4, f clk = 3200 mhz, f in = 3199.9 mhz figure 59. background calibration core transition (ac signal zoomed) jmode4, f clk = 3200 mhz, dc input figure 60. background calibration core transition (dc signal) jmode4, f clk = 3200 mhz, dc input figure 61. background calibration core transition (dc signal zoomed) sample number sample value 1600 1700 1800 1900 2000 2100 2200 2300 2400 0 8 16 24 32 d128 -0.35 v differential sample number sample value 0 1000 2000 3000 4000 5000 6000 7000 8000 0 20 40 60 80 100 120 140 160 180 200 220 240 260 zoomed area in following plot d127 +0.35 v differential -0.35 v differential 0 v differential sample number sample value 14800 15200 15600 16000 16400 90 100 110 120 130 140 d126 sample number sample value 0 5000 10000 15000 20000 25000 30000 35000 0 64 128 192 256 zoomed area in following plot d125
35 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7 detailed description 7.1 overview the ADC08DJ3200 is an rf-sampling, giga-sample analog-to-digital converter (adc) that can directly sample input frequencies from dc to above 10 ghz. in dual-channel mode, the ADC08DJ3200 can sample up to 3200 msps and up to 6400 msps in single-channel mode. programmable tradeoffs in channel count (dual- channel mode) and nyquist bandwidth (single-channel mode) allow development of flexible hardware that meets the needs of both high channel count or wide instantaneous signal bandwidth applications. full-power input bandwidth ( ? 3 db) of 8.0 ghz, with usable frequencies exceeding the ? 3-db point in both dual- and single- channel modes, allows direct rf sampling of l-band, s-band, c-band, and x-band for frequency agile systems. time interleaving is achieved internally through four active cores. in dual-channel mode, two cores are interleaved per channel to increase the sample rate to twice the core sample rate. in single-channel mode, all four cores are time interleaved to increase the sample rate to 4x the core sample rate. either input can be used in single-channel mode, however performance is optimized for ina . the user provides a clock at twice the adc core sample rate and clock generation for the interleaved cores is done internally for both single-channel mode and dual-channel mode. the ADC08DJ3200 also provides foreground and background calibration options to match the gain and offset between cores to minimize spurious artifacts from interleaving. the ADC08DJ3200 uses a high-speed jesd204b output interface with up to 16 serialized lanes and subclass-1 compliance for deterministic latency and multi-device synchronization. the serial output lanes support up to 12.8 gbps and can be configured to trade-off bit rate and number of lanes. at 5 gsps, only four total lanes are required running at 12.5 gbps or 16 lanes can be used to reduce the lane rate to 3.125 gbps. innovative synchronization features, including noiseless aperture delay (t ad ) adjustment and sysref windowing, simplify system design for phased array radar and multiple-input-multiple-output (mimo) communications.
36 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.2 functional block diagram 7.3 feature description 7.3.1 device comparison the devices listed in table 1 are part of a pin-to-pin compatible, high-speed, wide-bandwidth adc family. the family is offered to provide a scalable family of devices for varying levels of performance, speed, and signal bandwidth. table 1. device family comparison part number speed grade resolution adc12dj3200 single 6.4 gsps or dual 3.2 gsps 12-bit adc12dj2700 single 5.4 gsps or dual 2.7 gsps 12-bit ADC08DJ3200 single 6.4 gsps or dual 3.2 gsps 8-bit 7.3.2 analog inputs the analog inputs of the ADC08DJ3200 have internal buffers to enable high input bandwidth and to isolate sampling capacitor glitch noise from the input circuit. analog inputs must be driven differentially because operation with a single-ended signal results in degraded performance. both ac-coupling and dc-coupling of the analog inputs is supported. the analog inputs are designed for an input common-mode voltage (v cmi ) of 0 v, which is terminated internally through single-ended, 50- resistors to ground (gnd) on each input pin. dc- sclk sdi sdo scs\ adc a jesd204b link a jesd204b link b aperture delay adjust clock distribution and synchronization clk+ clk- sysref+ sysref- syncse\ over- range da0+ da0- da7+ da7- db0+ db0- db7+ db7- status indicators ora0 ora1 orb0 orb1 calstat adc b tdiode+ tdiode- caltrg pd spi registers and device control ina+ ina- inb+ inb- tmstp+ tmstp- input mux input mux sysref windowing copyright ? 2017, texas instruments incorporated
37 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated coupled input signals must have a common-mode voltage that meets the device input common-mode requirements specified as v cmi in the recommended operating conditions table. the 0-v input common-mode voltage simplifies the interface to split-supply, fully-differential amplifiers and to a variety of transformers and baluns. the ADC08DJ3200 includes internal analog input protection to protect the adc inputs during overranged input conditions; see the analog input protection section. figure 62 provides a simplified analog input model. figure 62. ADC08DJ3200 analog input internal termination and protection diagram there is minimal degradation in analog input bandwidth when using single-channel mode versus dual-channel mode. in single-channel mode, ina is strongly recommended to be used as the input to the adc because adc performance is optimized for ina . however, either analog input (ina+ and ina ? or inb+ and inb ? ) can be used. using inb results in degraded performance unless custom trim routines are used to optimize performance for inb in each device. the desired input can be chosen using single_input in the input mux control register . note ina is strongly recommended to be used as the input to the adc in single-channel mode for optimized performance. 7.3.2.1 analog input protection the analog inputs are protected against overdrive conditions by internal clamping diodes that are capable of sourcing or sinking input currents during overrange conditions, see the voltage and current limits in the absolute maximum ratings table. the overrange protection is also defined for a peak rf input power in the absolute maximum ratings table, which is frequency independent. operation above the maximum conditions listed in the recommended operating conditions table results in an increase in failure-in-time (fit) rate, so the system must correct the overdrive condition as quickly as possible. figure 62 shows the analog input protection diodes. 7.3.2.2 full-scale voltage (v fs ) adjustment input full-scale voltage (v fs ) adjustment is available, in fine increments, for each analog input through the fs_range_a register setting (see the ina full-scale range adjust register ) and fs_range_b register setting (see the inb full-scale range adjust register ) for ina and inb , respectively. the available adjustment range is specified in the electrical characteristics: dc specifications table. larger full-scale voltages improve snr and noise floor (in dbfs/hz) performance, but can degrade harmonic distortion. the full-scale voltage adjustment is useful for matching the full-scale range of multiple adcs when developing a multi-converter system or for external interleaving of multiple ADC08DJ3200s to achieve higher sampling rates. adc 50 50 ina+, inb+ ina-, inb- agnd analog input protection diodes. input buffer copyright ? 2017, texas instruments incorporated
38 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.3.2.3 analog input offset adjust the input offset voltage for each input can be adjusted through the oadj_x_iny registers (registers 0x08a and 0x095), where x represents the adc core (a, b, or c) and y represents the analog input (ina or inb ). the adjustment range is approximately 28 mv to ? 28 mv differential. see the calibration modes and trimming section for more information. 7.3.3 adc core the ADC08DJ3200 consists of a total of six adc cores. the cores are interleaved for higher sampling rates and swapped on-the-fly for calibration as required by the operating mode. this section highlights the theory and key features of the adc cores. 7.3.3.1 adc theory of operation the differential voltages at the analog inputs are captured by the rising edge of clk in dual-channel mode or by the rising and falling edges of clk in single-channel mode. after capturing the input signal, the adc converts the analog voltage to a digital value by comparing the voltage to the internal reference voltage. if the voltage on ina ? or inb ? is higher than the voltage on ina+ or inb+, respectively, then the digital output is a negative 2's complement value. if the voltage on ina+ or inb+ is higher than the voltage on ina ? or inb ? , respectively, then the digital output is a positive 2's complement value. equation 1 can calculate the differential voltage at the input pins from the digital output. where ? code is the signed decimation output code (for example, ? 2048 to +2047) ? n is the adc resolution ? and v fs is the full-scale input voltage of the adc as specified in the recommended operating conditions table, including any adjustment performed by programming fs_range_a or fs_range_b (1) 7.3.3.2 adc core calibration adc core calibration is required to optimize the analog performance of the adc cores. calibration must be repeated when operating conditions change significantly, namely temperature, in order to maintain optimal performance. the ADC08DJ3200 has a built-in calibration routine that can be run as a foreground operation or a background operation. foreground operation requires adc downtime, where the adc is no longer sampling the input signal, to complete the process. background calibration can be used to overcome this limitation and allow constant operation of the adc. see the calibration modes and trimming section for detailed information on each mode. 7.3.3.3 adc overrange detection to ensure that system gain management has the quickest possible response time, a low-latency configurable overrange function is included. the overrange function works by monitoring the converted 8-bit samples at the adc to quickly detect if the adc is near saturation or already in an overrange condition. the absolute value of the 8 bits of the adc data are checked against two programmable thresholds, ovr_t0 and ovr_t1. these thresholds apply to both channel a and channel b in dual-channel mode. table 2 lists how an adc sample is converted to an absolute value for a comparison of the thresholds. table 2. conversion of adc sample for overrange comparison adc sample (offset binary) adc sample (2's complement) absolute value 8 bits used for comparison 1111 1111 (255) 0111 1111 (+127) 111 1111 (127) 1111 1111 (255) 1000 0000 (128) 0000 0000 (0) 000 0000 (0) 0000 0000 (0) 0000 0001 (1) 1000 0001 ( ? 127) 111 1111 (127) 1111 1110 (254) 0000 0000 (0) 1000 0000 ( ? 128) 111 1111 (127) 1111 1111 (255) in fs n code v v 2
39 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated if the 8 bits of the absolute value equal or exceed the ovr_t0 or ovr_t1 thresholds during the monitoring period, then the overrange bit associated with the threshold is set to 1, otherwise the overrange bit is 0. in dual- channel mode, the overrange status can be monitored on the ora0 and ora1 pins for channel a and the orb0 and orb1 pins for channel b, where orx0 corresponds to the ovr_t0 threshold and orx1 corresponds to the ovr_t1 threshold. in single-channel mode, the overrange status for the ovr_t0 threshold is determined by monitoring both the ora0 and orb0 outputs and the ovr_t1 threshold is determined by monitoring both ora1 and orb1 outputs. in single-channel mode, the two outputs for each threshold must be or'd together to determine whether an overrange condition occurred. ovr_n can be used to set the output pulse duration from the last overrange event. table 3 lists the overrange pulse lengths for the various ovr_n settings (see the overrange configuration register ). table 3. overrange monitoring period for the ora0, ora1, orb0, and orb1 outputs ovr_n overrange pulse length since last overrange event (devclk cycles) 0 8 1 16 2 32 3 64 4 128 5 256 6 512 7 1024 typically, the ovr_t0 threshold can be set near the full-scale value (228 for example). when the threshold is triggered, a typical system can turn down the system gain to avoid clipping. the ovr_t1 threshold can be set much lower. for example, the ovr_t1 threshold can be set to 64 (peak input voltage of ? 12 dbfs). if the input signal is strong, the ovr_t1 threshold is tripped occasionally. if the input is quite weak, the threshold is never tripped. the downstream logic device monitors the ovr_t1 bit. if ovr_t1 stays low for an extended period of time, then the system gain can be increased until the threshold is occasionally tripped (meaning the peak level of the signal is above ? 12 dbfs). 7.3.3.4 code error rate (cer) adc cores can generate bit errors within a sample, often called code errors (cer) or referred to as sparkle codes , resulting from metastability caused by non-ideal comparator limitations. the ADC08DJ3200 uses a unique adc architecture that inherently allows significant code error rate improvements from traditional pipelined flash or successive approximation register (sar) adcs. the code error rate of the ADC08DJ3200 is multiple orders of magnitude better than what can be achieved in alternative architectures at equivalent sampling rates providing significant signal reliability improvements. 7.3.4 timestamp the tmstp+ and tmstp ? differential input can be used as a time-stamp input to mark a specific sample based on the timing of an external trigger event relative to the sampled signal. timestamp_en (see the lsb control bit output register ) must be set in order to use the timestamp feature and output the timestamp data. when enabled, the lsb of the 8-bit adc digital output reports the status of the tmstp input. in effect, the 8-bit output sample consists of the upper 7-bits of the 8-bit converter and the lsb of the 8-bit output sample is the output of a parallel 1-bit converter (tmstp ) with the same latency as the adc core. the trigger must be applied to the differential tmstp+ and tmstp ? inputs. the trigger can be asynchronous to the adc sampling clock and is sampled at approximately the same time as the analog input. timestamp cannot be used when a jmode with decimation is selected and instead sysref must be used to achieve synchronization through the jesd204b subclass-1 method for achieving deterministic latency. 7.3.5 clocking the clocking subsystem of the ADC08DJ3200 has two input signals, device clock (clk+, clk ? ) and sysref (sysref+, sysref ? ). within the clocking subsystem there is a noiseless aperture delay adjustment (t ad adjust), a clock duty cycle corrector, and a sysref capture block. figure 63 describes the clocking subsystem.
40 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated figure 63. ADC08DJ3200 clocking subsystem the device clock is used as the sampling clock for the adc core as well as the clocking for the digital processing and serializer outputs. use a low-noise (low jitter) device clock to maintain high signal-to-noise ratio (snr) within the adc. in dual-channel mode, the analog input signal for each input is sampled on the rising edge of the device clock. in single-channel mode, both the rising and falling edges of the device clock are used to capture the analog signal to reduce the maximum clock rate required by the adc. a noiseless aperture delay adjustment (t ad adjust) allows the user to shift the sampling instance of the adc in fine steps in order to synchronize multiple ADC08DJ3200s or to fine-tune system latency. duty cycle correction is implemented in the ADC08DJ3200 to ease the requirements on the external device clock while maintaining high performance. table 4 summarizes the device clock interface in dual-channel mode and single-channel mode. table 4. device clock vs mode of operation mode of operation sampling rate vs f clk sampling instant dual-channel mode 1 f clk rising edge single-channel mode 2 f clk rising and falling edge sysref is a system timing reference used for jesd204b subclass-1 implementations of deterministic latency. sysref is used to achieve deterministic latency and for multi-device synchronization. sysref must be captured by the correct device clock edge in order to achieve repeatable latency and synchronization. the ADC08DJ3200 includes sysref windowing and automatic sysref calibration to ease the requirements on the external clocking circuits and to simplify the synchronization process. sysref can be implemented as a single pulse or as a periodic clock. in periodic implementations, sysref must be equal to, or an integer division of, the local multiframe clock frequency. equation 2 is used to calculate valid sysref frequencies. where ? r and f are set by the jmode setting (see table 10 ) ? f clk is the device clock frequency (clk ) ? k is the programmed multiframe length (see table 10 for valid k settings) ? and n is any positive integer (2) clk sysref r f f 10 f k n u u u u sysref capture t ad adjust clock distribution and synchronization (adc cores, digital, jesd204b, etc.) clk+ clk- sysref+ sysref- sysref windowing automatic sysref calibration sysref_pos sysref_sel tad _ inv tad _ coarse tad_fine src_en duty cycle correction copyright ? 2017, texas instruments incorporated
41 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.3.5.1 noiseless aperture delay adjustment (t ad adjust) the ADC08DJ3200 contains a delay adjustment on the device clock (sampling clock) input path, called t ad adjust, that can be used to shift the sampling instance within the device in order to align sampling instances among multiple devices or for external interleaving of multiple ADC08DJ3200s. further, t ad adjust can be used for automatic sysref calibration to simplify synchronization; see the automatic sysref calibration section. aperture delay adjustment is implemented in a way that adds no additional noise to the clock path, however a slight degradation in aperture jitter (t aj ) is possible at large values of tad_coarse because of internal clock path attenuation. the degradation in aperture jitter can result in minor snr degradations at high input frequencies (see t aj in the switching characteristics table). this feature is programmed using tad_inv, tad_coarse, and tad_fine in the devclk timing adjust ramp control register . setting tad_inv inverts the input clock resulting in a delay equal to half the clock period. table 5 summarizes the step sizes and ranges of the tad_coarse and tad_fine variable analog delays. all three delay options are independent and can be used in conjunction. all clocks within the device are shifted by the programmed t ad adjust amount, which results in a shift of the timing of the jesd204b serialized outputs and affects the capture of sysref. table 5. t ad adjust adjustment ranges adjustment parameter adjustment step delay settings maximum delay tad_inv 1 / (f clk 2) 1 1 / (f clk 2) tad_coarse see t tad(step) in the switching characteristics table 256 see t tad(max) in the switching characteristics table tad_fine see t tad(step) in the switching characteristics table 256 see t tad(max) in the switching characteristics table in order to maintain timing alignment between converters, stable and matched power-supply voltages and device temperatures must be provided. aperture delay adjustment can be changed on-the-fly during normal operation but may result in brief upsets to the jesd204b data link. use tad_ramp to reduce the probability of the jesd204b link losing synchronization; see the aperture delay ramp control (tad_ramp) section. 7.3.5.2 aperture delay ramp control (tad_ramp) the ADC08DJ3200 contains a function to gradually adjust the t ad adjust setting towards the newly written tad_coarse value. this functionality allows the t ad adjust setting to be adjusted with minimal internal clock circuitry glitches. the tad_ramp_rate parameter allows either a slower (one tad_coarse lsb per 256 t clk cycles) or faster ramp (four tad_coarse lsbs per 256 t clk cycles) to be selected. the tad_ramp_en parameter enables the ramp feature and any subsequent writes to tad_coarse initiate a new cramp. 7.3.5.3 sysref capture for multi-device synchronization and deterministic latency the clocking subsystem is largely responsible for achieving multi-device synchronization and deterministic latency. the ADC08DJ3200 uses the jesd204b subclass-1 method to achieve deterministic latency and synchronization. subclass 1 requires that the sysref signal be captured by a deterministic device clock (clk ) edge at each system power-on and at each device in the system. this requirement imposes setup and hold constraints on sysref relative to clk , which can be difficult to meet at giga-sample clock rates over all system operating conditions. the ADC08DJ3200 includes a number of features to simplify this synchronization process and to relax system timing constraints: ? the ADC08DJ3200 uses dual-edge sampling (des) in single-channel mode to reduce the clk input frequency by half and double the timing window for sysref (see table 4 ) ? a sysref position detector (relative to clk ) and selectable sysref sampling position aid the user in meeting setup and hold times over all conditions; see the sysref position detector and sampling position selection (sysref windowing) section ? easy-to-use automatic sysref calibration uses the aperture timing adjust block (t ad adjust) to shift the adc sampling instance based on the phase of sysref (rather than adjusting sysref based on the phase of the adc sampling instance); see the automatic sysref calibration section
42 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated (1) red coloration indicates the bits that are selected, as given in the last column of this table. 7.3.5.3.1 sysref position detector and sampling position selection (sysref windowing) the sysref windowing block is used to first detect the position of sysref relative to the clk rising edge and then to select a desired sysref sampling instance, which is a delay version of clk , to maximize setup and hold timing margins. in many cases a single sysref sampling position (sysref_sel) is sufficient to meet timing for all systems (device-to-device variation) and conditions (temperature and voltage variations). however, this feature can also be used by the system to expand the timing window by tracking the movement of sysref as operating conditions change or to remove system-to-system variation at production test by finding a unique optimal value at nominal conditions for each system. this section describes proper usage of the sysref windowing block. first, apply the device clock and sysref to the device. the location of sysref relative to the device clock cycle is determined and stored in the sysref_pos bits of the sysref capture position register . each bit of sysref_pos represents a potential sysref sampling position. if a bit in sysref_pos is set to 1, then the corresponding sysref sampling position has a potential setup or hold violation. upon determining the valid sysref sampling positions (the positions of sysref_pos that are set to 0) the desired sampling position can be chosen by setting sysref_sel in the clock control register 0 to the value corresponding to that sysref_pos position. in general, the middle sampling position between two setup and hold instances is chosen. ideally, sysref_pos and sysref_sel are performed at the nominal operating conditions of the system (temperature and supply voltage) to provide maximum margin for operating condition variations. this process can be performed at final test and the optimal sysref_sel setting can be stored for use at every system power up. further, sysref_pos can be used to characterize the skew between clk and sysref over operating conditions for a system by sweeping the system temperature and supply voltages. for systems that have large variations in clk to sysref skew, this characterization can be used to track the optimal sysref sampling position as system operating conditions change. in general, a single value can be found that meets timing over all conditions for well-matched systems, such as those where clk and sysref come from a single clocking device. note sysref_sel must be set to 0 when using automatic sysref calibration; see the automatic sysref calibration section. the step size between each sysref_pos sampling position can be adjusted using sysref_zoom. when sysref_zoom is set to 0, the delay steps are coarser. when sysref_zoom is set to 1, the delay steps are finer. see the switching characteristics table for delay step sizes when sysref_zoom is enabled and disabled. in general, sysref_zoom is recommended to always be used (sysref_zoom = 1) unless a transition region (defined by 1's in sysref_pos) is not observed, which can be the case for low clock rates. bits 0 and 23 of sysref_pos are always be set to 1 because there is insufficient information to determine if these settings are close to a timing violation, although the actual valid window can extend beyond these sampling positions. the value programmed into sysref_sel is the decimal number representing the desired bit location in sysref_pos. table 6 lists some example sysref_pos readings and the optimal sysref_sel settings. although 24 sampling positions are provided by the sysref_pos status register, sysref_sel only allows selection of the first 16 sampling positions, corresponding to sysref_pos bits 0 to 15. the additional sysref_pos status bits are intended only to provide additional knowledge of the sysref valid window. in general, lower values of sysref_sel are selected because of delay variation over supply voltage, however in the fourth example a value of 15 provides additional margin and can be selected instead. table 6. examples of sysref_pos readings and sysref_sel selections sysref_pos[23:0] optimal sysref_sel setting 0x02e[7:0] (largest delay) 0x02d[7:0] (1) 0x02c[7:0] (1) (smallest delay) b10000000 b011000 00 b00011001 8 or 9 b10011000 b000 0 0000 b00110001 12 b10000000 b01100000 b 00 000001 6 or 7 b10000000 b 0 0000011 b000 0 0001 4 or 15 b10001100 b01100011 b0 0 011001 6
43 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.3.5.3.2 automatic sysref calibration the ADC08DJ3200 has an automatic sysref calibration feature to alleviate the often challenging setup and hold times associated with capturing sysref for giga-sample data converters. automatic sysref calibration uses the t ad adjust feature to shift the device clock to maximize the sysref setup and hold times or to align the sampling instance based on the sysref rising edge. the ADC08DJ3200 must have a proper device clock applied and be programmed for normal operation before starting the automatic sysref calibration. when ready to initiate automatic sysref calibration, a continuous sysref signal must be applied. sysref must be a continuous (periodic) signal when using the automatic sysref calibration. start the calibration process by setting src_en high in the sysref calibration enable register after configuring the automatic sysref calibration using the src_cfg register. upon setting src_en high, the ADC08DJ3200 searches for the optimal t ad adjust setting until the device clock falling edge is internally aligned to the sysref rising edge. tad_done in the sysref calibration status register can be monitored to ensure that the sysref calibration has finished. by aligning the device clock falling edge with the sysref rising edge, automatic sysref calibration maximizes the internal sysref setup and hold times relative to the device clock and also sets the sampling instant based on the sysref rising edge. after the automatic sysref calibration finishes, the rest of the startup procedure can be performed to finish bringing up the system. for multi-device synchronization, the sysref rising edge timing must be matched at all devices and therefore trace lengths must be matched from a common sysref source to each ADC08DJ3200. any skew between the sysref rising edge at each device results in additional error in the sampling instance between devices, however repeatable deterministic latency from system startup to startup through each device must still be achieved. no other design requirements are needed in order to achieve multi-device synchronization as long as a proper elastic buffer release point is chosen in the jesd2048 receiver. figure 64 provides a timing diagram of the sysref calibration procedure. the optimized setup and hold times are shown as t su(opt) and t h(opt) , respectively. device clock and sysref are referred to as internal in this diagram because the phase of the internal signals are aligned within the device and not to the external (applied) phase of the device clock or sysref. figure 64. sysref calibration timing diagram sampled input signal internal unadjusted device clock internal sysref src_en (spi register bit) t h(opt) t su(opt) internal calibrated device clock before calibration, device clock falling edge does not align with sysref rising edge t tad(src) calibration enabled after calibration, device clock falling edge aligns with sysref rising edge t cal(src) tad_done (spi register bit) calibration finished
44 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated when finished, the t ad adjust setting found by the automatic sysref calibration can be read from src_tad in the sysref calibration status register . after calibration, the system continues to use the calibrated t ad adjust setting for operation until the system is powered down. however, if desired, the user can then disable the sysref calibration and fine-tune the t ad adjust setting according to the systems needs. alternatively, the use of the automatic sysref calibration can be done at product test (or periodic recalibration) of the optimal t ad adjust setting for each system. this value can be stored and written to the tad register (tad_inv, tad_coarse, and tad_fine) upon system startup. do not run the sysref calibration when the adc calibration (foreground or background) is running. if background calibration is the desired use case, disable the background calibration when the sysref calibration is used, then reenable the background calibration after tad_done goes high. sysref_sel in the clock control register 0 must be set to 0 when using sysref calibration. sysref calibration searches the tad_coarse delays using both noninverted (tad_inv = 0) and inverted clock polarity (tad_inv = 1) to minimize the required tad_coarse setting in order to minimize loss on the clock path to reduce aperture jitter (t aj ). 7.3.6 jesd204b interface the ADC08DJ3200 uses the jesd204b high-speed serial interface for data converters to transfer data from the adc to the receiving logic device. the ADC08DJ3200 serialized lanes are capable of operating up to 12.8 gbps, slightly above the jesd204b maximum lane rate. a maximum of 16 lanes can be used to allow lower lane rates for interfacing with speed-limited logic devices. figure 65 shows a simplified block diagram of the jesd204b interface protocol. figure 65. simplified jesd204b interface diagram the various signals used in the jesd204b interface and the associated ADC08DJ3200 pin names are summarized briefly in table 7 for reference. adc jesd204b transport layer scrambler (optional) jesd204b link layer jesd204b tx 8b/10b encoder application layer jesd204b transport layer descramble (optional) jesd204b link layer jesd204b rx 8b/10b decoder adc jesd204b block logic device jesd204b block analog channel copyright ? 2017, texas instruments incorporated
45 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated table 7. summary of jesd204b signals signal name ADC08DJ3200 pin names description data da[7:0]+, da[7:0] ? , db[7:0]+, db[7:0] ? ) high-speed serialized data after 8b, 10b encoding sync syncse, tmstp+, tmstp ? link initialization signal (handshake), toggles low to start code group synchronization (cgs) process device clock clk+, clk ? adc sampling clock, also used for clocking digital logic and output serializers sysref sysref+, sysref ? system timing reference used to deterministically reset the internal local multiframe counters in each jesd204b device 7.3.6.1 transport layer the transport layer takes samples from the adc output and maps the samples into octets, frames, multiframes, and lanes. sample mapping is defined by the jesd204b mode that is used, defined by parameters such as l, m, f, s, n, n', cf, and so forth. there are a number of predefined transport layer modes in the ADC08DJ3200 that are defined in table 10 . the high level configuration parameters for the transport layer in the ADC08DJ3200 are described in table 8 . for simplicity, the transport layer mode is chosen by simply setting the jmode parameter and the desired k value. for reference, the various configuration parameters for jesd204b are defined in table 9 . 7.3.6.2 scrambler an optional data scrambler can be used to scramble the octets before transmission across the channel. scrambling is recommended in order to remove the possibility of spectral peaks in the transmitted data. the jesd204b receiver automatically synchronizes its descrambler to the incoming scrambled data stream. the initial lane alignment sequence (ila) is never scrambled. scrambling can be enabled by setting scr (in the jesd204b control register ). 7.3.6.3 link layer the link layer serves multiple purposes in jesd204b, including establishing the code boundaries (see the code group synchronization (cgs) section), initializing the link (see the initial lane alignment sequence (ilas) section), encoding the data (see the 8b, 10b encoding section), and monitoring the health of the link (see the frame and multiframe monitoring section). 7.3.6.3.1 code group synchronization (cgs) the first step in initializing the jesd204b link, after sysref is processed, is to achieve code group synchronization. the receiver first asserts the sync signal when ready to initialize the link. the transmitter responds to the request by sending a stream of k28.5 characters. the receiver then aligns its character clock to the k28.5 character sequence. code group synchronization is achieved after receiving four k28.5 characters successfully. the receiver deasserts sync on the next local multiframe clock (lmfc) edge after cgs is achieved and waits for the transmitter to start the initial lane alignment sequence. 7.3.6.3.2 initial lane alignment sequence (ilas) after the transmitter detects the sync signal deassert, the transmitter waits until its next lmfc edge to start sending the initial lane alignment sequence. the ilas consists of four multiframes each containing a predetermined sequence. the receiver searches for the start of the ilas to determine the frame and multiframe boundaries. as the ilas reaches the receiver for each lane, the lane starts to buffer its data until all receivers have received the ilas and subsequently release the ilas from all lanes at the same time in order to align the lanes. the second multiframe of the ilas contains configuration parameters for the jesd204b that can be used by the receiver to verify that the transmitter and receiver configurations match.
46 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.3.6.3.3 8b, 10b encoding the data link layer converts the 8-bit octets from the transport layer into 10-bit characters for transmission across the link using 8b, 10b encoding. 8b, 10b encoding provides dc balance for ac-coupling of the serdes links and a sufficient number of edge transitions for the receiver to reliably recover the data clock. 8b, 10b also provides some amount of error detection where a single bit error in a character likely results in either not being able to find the 10-bit character in the 8b, 10b decoder lookup table or incorrect character disparity. 7.3.6.3.4 frame and multiframe monitoring the ADC08DJ3200 supports frame and multiframe monitoring for verifying the health of the jesd204b link. if the last octet of a frame matches the last octet of the previous frame, then the last octet in the second frame is replaced with an /f/ (/k28.7/) character. if the second frame is the last frame of a multiframe, then an /a/ (/k28.3/) character is used instead. when scrambling is enabled, if the last octet of a frame is 0xfc then the transmitter replaces the octet with an /f/ (/k28.7/) character. with scrambling, if the last octet of a multiframe is 0x7c then the transmitter replaces the octet with an /a/ (/k28.3/) character. when the receiver detects an /f/ or /a/ character, the receiver checks if the character occurs at the end of a frame or multiframe, and replaces that octet with the appropriate data character. the receiver can report an error if the alignment characters occur in the incorrect place and trigger a link realignment. 7.3.6.4 physical layer the jesd204b physical layer consists of a current mode logic (cml) output driver and receiver. the receiver consists of a clock detection and recovery (cdr) unit to extract the data clock from the serialized data stream and can contain an equalizer to correct for the low-pass response of the physical transmission channel. likewise, the transmitter can contain pre-equalization to account for frequency dependent losses across the channel. the total reach of the serdes links depends on the data rate, board material, connectors, equalization, noise and jitter, and required bit-error performance. the serdes lanes do not have to be matched in length because the receiver aligns the lanes during the initial lane alignment sequence. 7.3.6.4.1 serdes pre-emphasis the ADC08DJ3200 high-speed output drivers can pre-equalize the transmitted data stream by using pre- emphasis in order to compensate for the low-pass response of the transmission channel. configurable pre- emphasis settings allow the output drive waveform to be optimized for different pcb materials and signal transmission distances. the pre-emphasis setting is adjusted through the serializer pre-emphasis setting ser_pe (in the serializer pre-emphasis control register ). higher values increase the pre-emphasis to compensate for more lossy pcb materials. this adjustment is best used in conjunction with an eye-diagram analysis capability in the receiver. adjust the pre-emphasis setting to optimize the eye-opening for the specific hardware configuration and line rates needed. 7.3.6.5 jesd204b enable the jesd204b interface must be disabled through jesd_en (in the jesd204b enable register ) while any of the other jesd204b parameters are being changed. when jesd_en is set to 0 the block is held in reset and the serializers are powered down. the clocks for this section are also gated off to further save power. when the parameters are set as desired, the jesd204b block can be enabled (jesd_en is set to 1). 7.3.6.6 multi-device synchronization and deterministic latency jesd204b subclass 1 outlines a method to achieve deterministic latency across the serial link. if two devices achieve the same deterministic latency then they can be considered synchronized. this latency must be achieved from system startup to startup to be deterministic. there are two key requirements to achieve deterministic latency. the first is proper capture of sysref for which the ADC08DJ3200 provides a number of features to simplify this requirement at giga-sample clock rates (see the sysref capture for multi-device synchronization and deterministic latency section for more information). the second requirement is to choose a proper elastic buffer release point in the receiver. because the ADC08DJ3200 is an adc, the ADC08DJ3200 is the transmitter (tx) in the jesd204b link and the logic device is the receiver (rx). the elastic buffer is the key block for achieving deterministic latency, and does so by absorbing variations in the propagation delays of the serialized data as the data travels from the transmitter to the receiver. a proper release point is one that provides sufficient margin against delay variations. an incorrect
47 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated release point results in a latency variation of one lmfc period. choosing a proper release point requires knowing the average arrival time of data at the elastic buffer, referenced to an lmfc edge, and the total expected delay variation for all devices. with this information the region of invalid release points within the lmfc period can be defined, which stretches from the minimum to maximum delay for all lanes. essentially, the designer must ensure that the data for all lanes arrives at all devices before the release point occurs. figure 66 provides a timing diagram that demonstrates this requirement. in this figure, the data for two adcs is shown. the second adc has a longer routing distance (t pcb ) and results in a longer link delay. first, the invalid region of the lmfc period is marked off as determined by the data arrival times for all devices. then, the release point is set by using the release buffer delay (rbd) parameter to shift the release point an appropriate number of frame clocks from the lmfc edge so that the release point occurs within the valid region of the lmfc cycle. in the case of figure 66 , the lmfc edge (rbd = 0) is a good choice for the release point because there is sufficient margin on each side of the valid region. figure 66. lmfc valid region definition for elastic buffer release point selection the tx and rx lmfcs do not necessarily need to be phase aligned, but knowledge of their phase is important for proper elastic buffer release point selection. also, the elastic buffer release point occurs within every lmfc cycle, but the buffers only release when all lanes have arrived. therefore, the total link delay can exceed a single lmfc period; see jesd204b multi-device synchronization: breaking down the requirements for more information. 7.3.6.7 operation in subclass 0 systems the ADC08DJ3200 can operate with subclass 0 compatibility provided that multi-adc synchronization and deterministic latency are not required. with these limitations, the device can operate without the application of sysref. the internal local multiframe clock is automatically self-generated with unknown timing. sync is used as normal to initiate the cgs and ila. 7.3.7 alarm monitoring a number of built-in alarms are available to monitor internal events. several types of alarms and upsets are detected by this feature: 1. serializer pll is not locked 2. jesd204b link is not transmitting data (not in the data transmission state) 3. sysref causes internal clocks to be realigned 4. an upset that impacts the internal clocks when an alarm occurs, a bit for each specific alarm is set in alm_status. each alarm bit remains set until the host system writes a 1 to clear the alarm. if the alarm type is not masked (see the alarm mask register ), then the alarm is also indicated by the alarm register. the calstat output pin can be configured as an alarm output that goes high when an alarm occurs; see the cal_status_sel bit in the calibration pin configuration register . tx lmfc rx lmfc adc 1 data propagation t tx t pcb t rx-deser time adc 2 data propagation t tx t pcb invalid region of lmfc valid region of lmfc nominal link delay (arrival at elastic buffer) link delay variation choose lmfc edge as release point (rbd = 0) release point margin t rx-deser
48 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.3.7.1 clock upset detection the clk_alm register bit indicates if the internal clocks have been upset. the clocks in channel a are continuously compared to channel b. if the clocks differ for even one devclk / 2 cycle, the clk_alm register bit is set and remains set until cleared by the host system by writing a 1. for the clk_alm register bit to function properly, follow these steps: 1. program jesd_en = 0 2. ensure the part is configured to use both channels (pd_ach = 0, pd_bch = 0) 3. program jesd_en = 1 4. write clk_alm = 1 to clear clk_alm 5. monitor the clk_alm status bit or the calstat output pin if cal_status_sel is properly configured 6. when exiting global power-down (via mode or the pd pin), the clk_alm status bit may be set and must be cleared by writing a 1 to clk_alm 7.3.8 temperature monitoring diode a built-in thermal monitoring diode is made available on the tdiode+ and tdiode ? pins. this diode facilitates temperature monitoring and characterization of the device in higher ambient temperature environments. although the on-chip diode is not highly characterized, the diode can be used effectively by performing a baseline measurement (offset) at a known ambient or board temperature and creating a linear equation with the diode voltage slope provided in the electrical characteristics: dc specifications table. perform offset measurement with the device unpowered or with the pd pin asserted to minimize device self-heating. only assert the pd pin long enough to take the offset measurement. recommended monitoring devices include the lm95233 device and similar remote-diode temperature monitoring products from texas instruments. 7.3.9 analog reference voltage the reference voltage for the ADC08DJ3200 is derived from an internal band-gap reference. a buffered version of the reference voltage is available at the bg pin for user convenience. this output has an output-current capability of 100 a. the bg output must be buffered if more current is required. no provision exists for the use of an external reference voltage, but the full-scale input voltage can be adjusted through the full-scale-range register settings. in unique cases, the va11 supply voltage can act as the reference voltage by setting bg_bypass (see the internal reference bypass register ).
49 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.4 device functional modes the ADC08DJ3200 can be configured to operate in a number of functional modes. these modes are described in this section. 7.4.1 dual-channel mode the ADC08DJ3200 can be used as a dual-channel adc where the sampling rate is equal to the clock frequency (f s = f clk ) provided at the clk+ and clk ? pins. the two inputs, ain and bin , serve as the respective inputs for each channel in this mode. this mode is chosen simply by setting jmode to the appropriate setting for the desired configuration as described in table 10 . the analog inputs can be swapped by setting dual_input (see the input mux control register ) 7.4.2 single-channel mode (des mode) the ADC08DJ3200 can also be used as a single-channel adc where the sampling rate is equal to two times the clock frequency (f s = 2 f clk ) provided at the clk+ and clk ? pins. this mode effectively interleaves the two adc channels together to form a single-channel adc at twice the sampling rate. this mode is chosen simply by setting jmode to the appropriate setting for the desired configuration as described in table 10 . either analog input, ina or inb , can serve as the input to the adc, however ina is recommended for best performance. the analog input can be selected using single_input (see the input mux control register ). the digital down- converters cannot be used in single-channel mode. note ina is strongly recommended to be used as the input to the adc for optimized performance in single-channel mode. 7.4.3 jesd204b modes the ADC08DJ3200 can be programmed as a single-channel or dual-channel adc and a number jesd204b output formats. table 8 summarizes the basic operating mode configuration parameters and whether they are user configured or derived. note powering down high-speed data outputs (da0 ... da7 , db0 ... db7 ) for extended times can reduce performance of the output serializers, especially at high data rates. for information regarding reliable serializer operation, see footnote 1 in the pin functions table. table 8. ADC08DJ3200 operating mode configuration parameters parameter description user configured or derived value jmode jesd204b operating mode, automatically derives the rest of the jesd204b parameters, single-channel or dual-channel mode user configured set by jmode (see the jesd204b mode register ) d decimation factor derived see table 10 des 1 = single-channel mode, 0 = dual-channel mode derived see table 10 r number of bits transmitted per lane per devclk cycle. the jesd204b line rate is the devclk frequency times r. this parameter sets the serdes pll multiplication factor or controls bypassing of the serdes pll. derived see table 10 links number of jesd204b links used derived see table 10 k number of frames per multiframe user configured set by km1 (see the jesd204b k parameter register ), see the allowed values in table 10
50 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated there are a number of parameters required to define the jesd204b format, all of which are sent across the link during the initial lane alignment sequence. in the ADC08DJ3200, most parameters are automatically derived based on the selected jmode; however, a few are configured by the user. table 9 describes these parameters. table 9. jesd204b initial lane alignment sequence parameters parameter description user configured or derived value adjcnt lmfc adjustment amount (not applicable) derived always 0 adjdir lmfc adjustment direction (not applicable) derived always 0 bid bank id derived always 0 cf number of control words per frame derived always 0 cs control bits per sample derived always set to 0 in ilas, see table 10 for actual usage did device identifier, used to identify the link user configured set by did (see the jesd204b did parameter register ), see table 11 f number of octets (bytes) per frame (per lane) derived see table 10 hd high-density format (samples split between lanes) derived always 0 jesdv jesd204 standard revision derived always 1 k number of frames per multiframe user configured set by the km1 register, see the jesd204b k parameter register l number of serial output lanes per link derived see table 10 lid lane identifier for each lane derived see table 11 m number of converters used to determine lane bit packing; may not match number of adc channels in the device derived see table 10 n sample resolution (before adding control and tail bits) derived see table 10 n' bits per sample after adding control and tail bits derived see table 10 s number of samples per converter (m) per frame derived see table 10 scr scrambler enabled user configured set by the jesd204b control register subclassv device subclass version derived always 1 res1 reserved field 1 derived always 0 res2 reserved field 2 derived always 0 chksum checksum for ilas checking (sum of all above parameters modulo 256) derived computed based on parameters in this table configuring the ADC08DJ3200 is made easy by using a single configuration parameter called jmode (see the jesd204b mode register ). using table 10 , the correct jmode value can be found for the desired operating mode. the modes listed in table 10 are the only available operating modes. this table also gives a range and allowable step size for the k parameter (set by km1, see the jesd204b k parameter register ), which sets the multiframe length in number of frames.
ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 51 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated table 10. ADC08DJ3200 operating modes ADC08DJ3200 operating mode user-specified parameter derived parameters input clock range (mhz) jmode k [min:step:max] d des links n cs n ? l (per link) m (per link) f s r (fbit / fclk) reserved 0-3 ? ? ? ? ? ? ? ? ? ? ? ? ? 8-bit, single-channel, 4 lanes 4 18:2:32 1 1 2 8 0 8 2 1 1 2 5 800-2560 8-bit, single-channel, 8 lanes 5 18:2:32 1 1 2 8 0 8 4 1 1 4 2.5 800- 3200 8-bit, dual-channel, 4 lanes 6 18:2:32 1 0 2 8 0 8 2 1 1 2 5 800-2560 8-bit, dual-channel, 8 lanes 7 18:2:32 1 0 2 8 0 8 4 1 1 4 2.5 800- 3200 reserved 8-16 ? ? ? ? ? ? ? ? ? ? ? ? ? 8-bit, single-channel, 16 lanes 17 18:2:32 1 1 2 8 0 8 8 1 1 8 1.25 800- 3200 8-bit, dual-channel, 16 lanes 18 18:2:32 1 0 2 8 0 8 8 1 1 8 1.25 800- 3200
52 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated the ADC08DJ3200 has a total of 16 high-speed output drivers that are grouped into two 8-lane jesd204b links. most operating modes use two links with up to eight lanes per link. the lanes and their derived configuration parameters are described in table 11 . for a specified jmode, the lowest indexed lanes for each link are used and the higher indexed lanes for each link are automatically powered down. always route the lowest indexed lanes to the logic device. table 11. ADC08DJ3200 lane assignment and parameters device pin designation link did (user configured) lid (derived) da0 a set by did (see the jesd204b did parameter register ), the effective did is equal to the did register setting (did) 0 da1 1 da2 2 da3 3 da4 4 da5 5 da6 6 da7 7 db0 b set by did (see the jesd204b did parameter register ), the effective did is equal to the did register setting plus 1 (did+1) 0 db1 1 db2 2 db3 3 db4 4 db5 5 db6 6 db7 7 7.4.3.1 jesd204b output data formats output data are formatted in a specific optimized fashion for each jmode setting. the following tables show the specific mapping formats for a single frame. in all mappings the tail bits (t) are 0 (zero). in table 12 to table 17 , the single-channel format samples are defined as sn, where n is the sample number within the frame. in the dual-channel output formats, the samples are defined as an and bn, where an are samples from channel a and bn are samples from channel b. all samples are formatted as msb first, lsb last. table 12. jmode 4 (8-bit, decimate-by-1, single-channel, 4 lanes) octet 0 nibble 0 1 da0 s0 da1 s2 db0 s1 db1 s3
53 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated table 13. jmode 5 (8-bit, decimate-by-1, single-channel, 8 lanes) octet 0 nibble 0 1 da0 s0 da1 s2 da2 s4 da3 s6 db0 s1 db1 s3 db2 s5 db3 s7 table 14. jmode 6 (8-bit, decimate-by-1, dual-channel, 4 lanes) octet 0 nibble 0 1 da0 a0 da1 a1 db0 b0 db1 b1 table 15. jmode 7 (8-bit, decimate-by-1, dual-channel, 8 lanes) octet 0 nibble 0 1 da0 a0 da1 a1 da2 a2 da3 a3 db0 b0 db1 b1 db2 b2 db3 b3
54 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated table 16. jmode 17 (8-bit, decimate-by-1, single-channel, 16 lanes) octet 0 nibble 0 1 da0 s0 da1 s2 da2 s4 da3 s6 da4 s8 da5 s10 da6 s12 da7 s14 db0 s1 db1 s3 db2 s5 db3 s7 db4 s9 db5 s11 db6 s13 db7 s15 table 17. jmode 18 (8-bit, decimate-by-1, dual-channel, 16 lanes) octet 0 nibble 0 1 da0 a0 da1 a1 da2 a2 da3 a3 da4 a4 da5 a5 da6 a6 da7 a7 db0 b0 db1 b1 db2 b2 db3 b3 db4 b4 db5 b5 db6 b6 db7 b7 7.4.4 power-down modes the pd input pin allows the ADC08DJ3200 devices to be entirely powered down. power-down can also be controlled by mode (see the device configuration register ). the serial data output drivers are disabled when pd is high. when the device returns to normal operation, the jesd204 link must be re-established, and the adc pipeline contain meaningless information so the system must wait a sufficient time for the data to be flushed. if power-down for power savings is desired, the system must power down the supply voltages regulators for va19, va11, and vd11 rather than make use of the pd input or mode settings.
55 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated note powering down high speed data outputs (da[7:0] , db[7:0] ) for extended times may reduce performance of the output serializers, especially at high data rates. for information regarding reliable serializer operation, see footnote 1 in the pin functions table. 7.4.5 test modes a number of device test modes are available. these modes insert known patterns of information into the device data path for assistance with system debug, development, or characterization. 7.4.5.1 serializer test-mode details test modes are enabled by setting jtest (see the jesd204b test pattern control register ) to the desired test mode. each test mode is described in detail in the following sections. regardless of the test mode, the serializer outputs are powered up based on jmode. only enable the test modes when the jesd204b link is disabled. figure 67 provides a diagram showing the various test mode insertion points. figure 67. test mode insertion points 7.4.5.2 prbs test modes the prbs test modes bypass the 8b, 10b encoder. these test modes produce pseudo-random bit streams that comply with the itu-t o.150 specification. these bit streams are used with lab test equipment that can self- synchronize to the bit pattern and, therefore, the initial phase of the pattern is not defined. the sequences are defined by a recursive equation. for example, equation 3 defines the prbs7 sequence. y[n] = y[n ? 6] y[n ? 7] where ? bit n is the xor of bit [n ? 6] and bit [n ? 7], which are previously transmitted bits (3) table 18 lists equations and sequence lengths for the available prbs test modes. the initial phase of the pattern is unique for each lane. table 18. pbrs mode equations prbs test mode sequence sequence length (bits) prbs7 y[n] = y[n ? 6] y[n ? 7] 127 prbs15 y[n] = y[n ? 14] y[n ? 15] 32767 prbs23 y[n] = y[n ? 18] y[n ? 23] 8388607 adc jesd204b transport layer scrambler (optional) jesd204b link layer jesd204b tx 8b/10b encoder adc jesd204b block long/short transport octet ramp test mode enable repeated ila modified rpat test mode enable prbs d21.5 k28.5 serial outputs high/low test mode enable active lanes and serial rates set by jmode
56 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.4.5.3 ramp test mode in the ramp test mode, the jesd204b link layer operates normally, but the transport layer is disabled and the input from the formatter is ignored. after the ila sequence, each lane transmits an identical octet stream that increments from 0x00 to 0xff and repeats. 7.4.5.4 short and long transport test mode jesd204b defines both short and long transport test modes to verify that the transport layers in the transmitter and receiver are operating correctly. the ADC08DJ3200 only supports the short transport test pattern. 7.4.5.4.1 short transport test pattern short transport test patterns send a predefined octet format that repeats every frame. in the ADC08DJ3200, all jmode configurations that have an n' value of 8 use the short transport test pattern. table 19 define the short transport test patterns for n' values of 8. all applicable lanes are shown, however only the enabled lanes (lowest indexed) for the configured jmode are used. table 19. short transport test pattern for n ' = 8 modes (length = 2 frames) frame 0 1 da0 0x00 0xff da1 0x01 0xfe da2 0x02 0xfd da3 0x03 0xfc db0 0x00 0xff db1 0x01 0xfe db2 0x02 0xfd db3 0x03 0xfc 7.4.5.5 d21.5 test mode in this test mode, the controller transmits a continuous stream of d21.5 characters (alternating 0s and 1s). 7.4.5.6 k28.5 test mode in this test mode, the controller transmits a continuous stream of k28.5 characters. 7.4.5.7 repeated ila test mode in this test mode, the jesd204b link layer operates normally, except that the ila sequence (ilas) repeats indefinitely instead of starting the data phase. whenever the receiver issues a synchronization request, the transmitter initiates code group synchronization. upon completion of code group synchronization, the transmitter repeatedly transmits the ila sequence. 7.4.5.8 modified rpat test mode a 12-octet repeating pattern is defined in incits tr-35-2004. the purpose of this pattern is to generate white spectral content for jesd204b compliance and jitter testing. table 20 lists the pattern before and after 8b, 10b encoding.
57 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated table 20. modified rpat pattern values octet number dx.y notation 8-bit input to 8b, 10b encoder 20b output of 8b, 10b encoder (two characters) 0 d30.5 0xbe 0x86ba6 1 d23.6 0xd7 2 d3.1 0x23 0xc6475 3 d7.2 0x47 4 d11.3 0x6b 0xd0e8d 5 d15.4 0x8f 6 d19.5 0xb3 0xca8b4 7 d20.0 0x14 8 d30.2 0x5e 0x7949e 9 d27.7 0xfb 10 d21.1 0x35 0xaa665 11 d25.2 0x59 7.4.6 calibration modes and trimming the ADC08DJ3200 has two calibration modes available: foreground calibration and background calibration. when foreground calibration is initiated the adcs are automatically taken offline and the output data becomes mid-code (0x000 in 2's complement) while a calibration is occurring. background calibration allows the adc to continue normal operation while the adc cores are calibrated in the background by swapping in a different adc core to take its place. additional offset calibration features are available in both foreground and background calibration modes. further, a number of adc parameters can be trimmed to optimize performance in a user system. the ADC08DJ3200 consists of a total of six sub-adcs, each referred to as a bank , with two banks forming an adc core. the banks sample out-of-phase so that each adc core is two-way interleaved. the six banks form three adc cores, referred to as adc a, adc b, and adc c. in foreground calibration mode, adc a samples ina and adc b samples inb in dual-channel mode and both adc a and adc b sample ina (or inb ) in single-channel mode. in the background calibration modes, the third adc core, adc c, is swapped in periodically for adc a and adc b so that they can be calibrated without disrupting operation. figure 68 provides a diagram of the calibration system including labeling of the banks that make up each adc core. when calibration is performed the linearity, gain, and offset voltage for each bank are calibrated to an internally generated calibration signal. the analog inputs can be driven during calibration, both foreground and background, except that when offset calibration (os_cal or bgos_cal) is used there must be no signals (or aliased signals) near dc for proper estimation of the offset (see the offset calibration section).
58 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated figure 68. ADC08DJ3200 calibration system block diagram in addition to calibration, a number of adc parameters are user controllable to provide trimming for optimal performance. these parameters include input offset voltage, adc gain, interleaving timing, and input termination resistance. the default trim values are programmed at the factory to unique values for each device that are determined to be optimal at the test system operating conditions. the user can read the factory-programmed values from the trim registers and adjust as desired. the register fields that control the trimming are labeled according to the input that is being sampled (ina or inb ), the bank that is being trimmed, or the adc core that is being trimmed. the user is not expected to change the trim values as operating conditions change, however optimal performance can be obtained by doing so. any custom trimming must be done on a per device basis because of process variations, meaning that there is no global optimal setting for all parts. see the trimming section for information about the available trim parameters and associated registers. 7.4.6.1 foreground calibration mode foreground calibration requires the adc to stop converting the analog input signals during the procedure. foreground calibration always runs on power-up and the user must wait a sufficient time before programming the device to ensure that the calibration is finished. foreground calibration can be initiated by triggering the calibration engine. the trigger source can be either the cal_trig pin or cal_soft_trig (see the calibration software trigger register ) and is chosen by setting cal_trig_en (see the calibration pin configuration register ). 7.4.6.2 background calibration mode background calibration mode allows the adc to continuously operate, with no interruption of data. this continuous operation is accomplished by activating an extra adc core that is calibrated and then takes over operation for one of the other previously active adc cores. when that adc core is taken off-line, that adc is calibrated and can in turn take over to allow the next adc to be calibrated. this process operates continuously, ensuring the adc cores always provide the optimum performance regardless of system operating condition adc a ina + ina- inb + inb- calibration signal calibration signal calibration signal bank 1 bank 0 adc c bank 3 bank 2 adc b bank 5 bank 4 calibration engine mux mux mux mux mux adc a output adc b output calibration engine calibration engine calibration engine calibration engine interleave interleave interleave copyright ? 2017, texas instruments incorporated
59 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated changes. because of the additional active adc core, background calibration mode has increased power consumption in comparison to foreground calibration mode. the low-power background calibration (lpbg) mode discussed in the low-power background calibration (lpbg) mode section provides reduced average power consumption in comparison with the standard background calibration mode. background calibration can be enabled by setting cal_bg (see the calibration configuration 0 register ). cal_trig_en must be set to 0 and cal_soft_trig must be set to 1. great care has been taken to minimize effects on converted data as the core switching process occurs, however, small brief glitches may still occur on the converter data as the cores are swapped. see the typical characteristics section for examples of possible glitches in sine-wave and dc signals. 7.4.6.3 low-power background calibration (lpbg) mode low-power background calibration (lpbg) mode reduces the power-overhead of enabling additional adc cores. off-line cores are powered down until ready to be calibrated and put on-line. set lp_en = 1 to enable the low- power background calibration feature. lp_sleep_dly is used to adjust the amount of time an adc sleeps before waking up for calibration (if lp_en = 1 and lp_trig = 0). lp_wake_dly sets how long the core is allowed to stabilize before calibration and being put on-line. lp_trig is used to select between an automatic switching process or one that is controlled by the user via cal_soft_trig or cal_trig. in this mode there is an increase in power consumption during the adc core calibration. the power consumption roughly alternates between the power consumption in foreground calibration when the spare adc core is sleeping to the power consumption in background calibration when the spare adc is being calibrated. design the power-supply network to handle the transient power requirements for this mode. 7.4.7 offset calibration foreground calibration and background calibration modes inherently calibrate the offsets of the adc cores; however, the input buffers sit outside of the calibration loop and therefore their offsets are not calibrated by the standard calibration process. in both dual-channel mode and single-channel mode, uncalibrated input buffer offsets result in a shift in the mid-code output (dc offset) with no input. further, in single-channel mode uncalibrated input buffer offsets can result in a fixed spur at f s / 2. a separate calibration is provided to correct the input buffer offsets. there must be no signals at or near dc or aliased signals that fall at or near dc in order to properly calibration the offsets, requiring the system to ensure this condition during normal operation or have the ability to mute the input signal during calibration. foreground offset calibration is enabled via cal_os and only performs the calibration one time as part of the foreground calibration procedure. background offset calibration is enabled via cal_bgos and continues to correct the offset as part of the background calibration routine to account for operating condition changes. when cal_bgos is set, the system must ensure that there are no dc or near dc signals or aliased signals that fall at or near dc during normal operation. offset calibration can be performed as a foreground operation when using background calibration by setting cal_os to 1 before setting cal_en, but does not correct for variations as operating conditions change. the offset calibration correction uses the input offset voltage trim registers (see table 21 ) to correct the offset and therefore must not be written by the user when offset calibration is used. the user can read the calibrated values by reading the oadj_x_viny registers, where x is the adc core and y is the input (ina or inb ), after calibration is completed. only read the values when fg_done is read as 1 when using foreground offset calibration (cal_os = 1) and do not read the values when using background offset calibration (cal_bgos = 1).
60 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.4.8 trimming table 21 lists the parameters that can be trimmed and the associated registers. table 21. trim register descriptions trim parameter trim register notes band-gap reference bg_trim measurement on bg output pin. input termination resistance rtrim_x, where x = a for ina or b for inb ) the device must be powered on with a clock applied. input offset voltage oadj_x_viny, where x = adc core (a, b or c) and y = a for ina or b for inb ) a different trim value is allowed for each adc core (a, b, or c) to allow more consistent offset performance in background calibration mode. ina and inb gain gain_trim_x, where x = a for ina or b for inb ) set fs_range_a and fs_range_b to default values before trimming the input. use fs_range_a and fs_range_b to adjust the full-scale input voltage. ina and inb full-scale input voltage fs_range_x, where x = a for ina or b for inb ) full-scale input voltage adjustment for each input. the default value is effected by gain_trim_x (x = a or b). trim gain_trim_x with fs_range_x set to the default value. fs_range_x can then be used to trim the full-scale input voltage. intra-adc core timing (bank timing) bx_time_y, where x = bank number (0 ? 5) and y = 0 or ? 90 clock phase trims the timing between the two banks of an adc core (adc a, b, or c) for two clock phases, either 0 or ? 90 . the ? 90 clock phase is used in single-channel mode only. inter-adc core timing (dual-channel mode) tadj_a, tadj_b, tadj_ca, tadj_cb the suffix letter (a, b, ca, or cb) indicates the adc core that is being trimmed. ca indicates the timing trim in background calibration mode for adc c when standing in for adc a, whereas cb is the timing trim for adc c when standing in for adc b. inter-adc core timing (single-channel mode) tadj_a_fg90, tadj_b_fg0, tadj_a_bg90, tadj_c_bg0, tadj_c_bg90, tadj_b_bg0 the middle letter (a, b, or c) indicates the adc core that is being trimmed. fg indicates a trim for foreground calibration while bg indicates background calibration. the suffix of 0 or 90 indicates the clock phase applied to the adc core. 0 indicates a 0 clock and is sampling in-phase with the clock input. 90 indicates a 90 clock and therefore is sampling out-of-phase with the clock input. these timings must be trimmed for optimal performance if the user prefers to use inb in single-channel mode. these timings are trimmed for ina at the factory. 7.4.9 offset filtering the ADC08DJ3200 has an additional feature that can be enabled to reduce offset-related interleaving spurs at f s / 2 and f s / 4 (single input mode only). offset filtering is enabled via cal_osfilt. the osfilt_bw and osfilt_soak parameters can be adjusted to tradeoff offset spur reduction with potential impact on information in the mission mode signal being processed. set these two parameters to the same value under most situations. the dc_restore setting is used to either retain or filter out all dc-related content in the signal.
61 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.5 programming 7.5.1 using the serial interface the serial interface is accessed using the following four pins: serial clock (sclk), serial data in (sdi), serial data out (sdo), and serial interface chip-select ( scs). register access is enabled through the scs pin. 7.5.1.1 scs this signal must be asserted low to access a register through the serial interface. setup and hold times with respect to the sclk must be observed. 7.5.1.2 sclk serial data input is accepted at the rising edge of this signal. sclk has no minimum frequency requirement. 7.5.1.3 sdi each register access requires a specific 24-bit pattern at this input. this pattern consists of a read-and-write (r/w) bit, register address, and register value. the data are shifted in msb first and multi-byte registers are always in little-endian format (least significant byte stored at the lowest address). setup and hold times with respect to the sclk must be observed (see the timing requirements table). 7.5.1.4 sdo the sdo signal provides the output data requested by a read command. this output is high impedance during write bus cycles and during the read bit and register address portion of read bus cycles. as shown in figure 69 , each register access consists of 24 bits. the first bit is high for a read and low for a write. the next 15 bits are the address of the register that is to be written to. during write operations, the last eight bits are the data written to the addressed register. during read operations, the last eight bits on sdi are ignored and, during this time, the sdo outputs the data from the addressed register. figure 69 shows the serial protocol details. figure 69. serial interface protocol: single read/write sclk 1 24 single register access scs sdi command field data field sdo (read mode) data field high z high z 17 16 8 a14 a13 a12 a11 a10 a9 a8 a7 a6 a5 a4 a3 a2 a1 a0 d7 d6 d5 d4 d3 d2 d1 d0 d7 d6 d5 d4 d3 d2 d1 d0 r/w
62 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated programming (continued) 7.5.1.5 streaming mode the serial interface supports streaming reads and writes. in this mode, the initial 24 bits of the transaction specifics the access type, register address, and data value as normal. additional clock cycles of write or read data are immediately transferred, as long as the scs input is maintained in the asserted (logic low) state. the register address auto increments (default) or decrements for each subsequent 8-bit transfer of the streaming transaction. the addr_asc bit (register 000h, bits 5 and 2) controls whether the address value ascends (increments) or descends (decrements). streaming mode can be disabled by setting the addr_hold bit (see the user spi configuration register ). figure 70 shows the streaming mode transaction details. figure 70. serial interface protocol: streaming read/write see the register maps section for detailed information regarding the registers. note the serial interface must not be accessed during adc calibration. accessing the serial interface during this time impairs the performance of the device until the device is calibrated correctly. writing or reading the serial registers also reduces dynamic adc performance for the duration of the register access time. 7.6 register maps the memory map lists all the ADC08DJ3200 registers. memory map address reset acronym type register name standard spi-3.0 (0x000 to 0x00f) 0x000 0x30 config_a r/w configuration a register 0x001 undefined reserved r reserved 0x002 0x00 device_config r/w device configuration register 0x003 0x03 chip_type r chip type register 0x004-0x005 0x0020 chip_id r chip id registers 0x006 0x0a chip_version r chip version register 0x007-0x00b undefined reserved r reserved 0x00c-0x00d 0x0451 vendor_id r vendor identification register 0x00e-0x00f undefined reserved r reserved user spi configuration (0x010 to 0x01f) 0x010 0x00 usr0 r/w user spi configuration register 0x011-0x01f undefined reserved r reserved sclk 1 24 multiple register access scs sdi command field data field (write mode) sdo (read mode) data field high z 17 16 8 32 data field high z 25 data field (write mode) a14 a13 a12 a1 1 a10 a9 a8 a7 a6 a5 a4 a3 a2 a1 a0 d7 d6 d5 d4 d3 d2 d1 d0 d7 d6 d5 d4 d3 d2 d1 d0 r/w d7 d6 d5 d4 d3 d2 d1 d0 d7 d6 d5 d4 d3 d2 d1 d0
63 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated register maps (continued) memory map (continued) address reset acronym type register name miscellaneous analog registers (0x020 to 0x047) 0x020-0x028 undefined reserved r reserved 0x029 0x00 clk_ctrl0 r/w clock control register 0 0x02a 0x20 clk_ctrl1 r/w clock control register 1 0x02b undefined reserved r reserved 0x02c-0x02e undefined sysref_pos r sysref capture position register 0x02f undefined reserved r reserved 0x030-0x031 0xa000 fs_range_a r/w ina full-scale range adjust register 0x032-0x033 0xa000 fs_range_b r/w inb full-scale range adjust register 0x034-0x037 undefined reserved r reserved 0x038 0x00 bg_bypass r/w internal reference bypass register 0x039-0x03a undefined reserved r reserved 0x03b 0x00 tmstp_ctrl r/w tmstp control register 0x03c-0x047 undefined reserved r reserved serializer registers (0x048 to 0x05f) 0x048 0x00 ser_pe r/w serializer pre-emphasis control register 0x049-0x05f undefined reserved r reserved calibration registers (0x060 to 0x0ff) 0x060 0x01 input_mux r/w input mux control register 0x061 0x01 cal_en r/w calibration enable register 0x062 0x01 cal_cfg0 r/w calibration configuration 0 register 0x063-0x069 undefined reserved r reserved 0x06a undefined cal_status r calibration status register 0x06b 0x00 cal_pin_cfg r/w calibration pin configuration register 0x06c 0x01 cal_soft_trig r/w calibration software trigger register 0x06d undefined reserved r reserved 0x06e 0x88 cal_lp r/w low-power background calibration register 0x06f undefined reserved r reserved 0x070 0x00 cal_data_en r/w calibration data enable register 0x071 undefined cal_data r/w calibration data register 0x072-0x079 undefined reserved r reserved 0x07a undefined gain_trim_a r/w channel a gain trim register 0x07b undefined gain_trim_b r/w channel b gain trim register 0x07c undefined bg_trim r/w band-gap reference trim register 0x07d undefined reserved r reserved 0x07e undefined rtrim_a r/w vina input resistor trim register 0x07f undefined rtrim_b r/w vinb input resistor trim register 0x080 undefined tadj_a_fg90 r/w timing adjustment for a-adc, single-channel mode, foreground calibration register 0x081 undefined tadj_b_fg0 r/w timing adjustment for b-adc, single-channel mode, foreground calibration register 0x082 undefined tadj_a_bg90 r/w timing adjustment for a-adc, single-channel mode, background calibration register 0x083 undefined tadj_c_bg0 r/w timing adjustment for c-adc, single-channel mode, background calibration register 0x084 undefined tadj_c_bg90 r/w timing adjustment for c-adc, single-channel mode, background calibration register
64 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated register maps (continued) memory map (continued) address reset acronym type register name 0x085 undefined tadj_b_bg0 r/w timing adjustment for b-adc, single-channel mode, background calibration register 0x086 undefined tadj_a r/w timing adjustment for a-adc, dual-channel mode register 0x087 undefined tadj_ca r/w timing adjustment for c-adc acting for a-adc, dual- channel mode register 0x088 undefined tadj_cb r/w timing adjustment for c-adc acting for b-adc, dual- channel mode register 0x089 undefined tadj_b r/w timing adjustment for b-adc, dual-channel mode register 0x08a-0x08b undefined oadj_a_ina r/w offset adjustment for a-adc and ina register 0x08c-0x08d undefined oadj_a_inb r/w offset adjustment for a-adc and inb register 0x08e-0x08f undefined oadj_c_ina r/w offset adjustment for c-adc and ina register 0x090-0x091 undefined oadj_c_inb r/w offset adjustment for c-adc and inb register 0x092-0x093 undefined oadj_b_ina r/w offset adjustment for b-adc and ina register 0x094-0x095 undefined oadj_b_inb r/w offset adjustment for b-adc and inb register 0x096 undefined reserved r reserved 0x097 0x00 osfilt0 r/w offset filtering control 0 0x098 0x33 osfilt1 r/w offset filtering control 1 0x099-0x0ff undefined reserved r reserved adc bank registers (0x100 to 0x15f) 0x100-0x101 undefined reserved r reserved 0x102 undefined b0_time_0 r/w timing adjustment for bank 0 (0 clock) register 0x103 undefined b0_time_90 r/w timing adjustment for bank 0 ( ? 90 clock) register 0x104-0x111 undefined reserved r reserved 0x112 undefined b1_time_0 r/w timing adjustment for bank 1 (0 clock) register 0x113 undefined b1_time_90 r/w timing adjustment for bank 1 ( ? 90 clock) register 0x114-0x121 undefined reserved r reserved 0x122 undefined b2_time_0 r/w timing adjustment for bank 2 (0 clock) register 0x123 undefined b2_time_90 r/w timing adjustment for bank 2 ( ? 90 clock) register 0x124-0x131 undefined reserved r reserved 0x132 undefined b3_time_0 r/w timing adjustment for bank 3 (0 clock) register 0x133 undefined b3_time_90 r/w timing adjustment for bank 3 ( ? 90 clock) register 0x134-0x141 undefined reserved r reserved 0x142 undefined b4_time_0 r/w timing adjustment for bank 4 (0 clock) register 0x143 undefined b4_time_90 r/w timing adjustment for bank 4 ( ? 90 clock) register 0x144-0x151 undefined reserved r reserved 0x152 undefined b5_time_0 r/w timing adjustment for bank 5 (0 clock) register 0x153 undefined b5_time_90 r/w timing adjustment for bank 5 ( ? 90 clock) register 0x154-0x15f undefined reserved r reserved lsb control registers (0x160 to 0x1ff) 0x160 0x00 enc_lsb r/w lsb control bit output register 0x161-0x1ff undefined reserved r reserved jesd204b registers (0x200 to 0x20f) 0x200 0x01 jesd_en r/w jesd204b enable register 0x201 0x02 jmode r/w jesd204b mode (jmode) register 0x202 0x1f km1 r/w jesd204b k parameter register 0x203 0x01 jsync_n r/w jesd204b manual sync request register 0x204 0x02 jctrl r/w jesd204b control register
65 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated register maps (continued) memory map (continued) address reset acronym type register name 0x205 0x00 jtest r/w jesd204b test pattern control register 0x206 0x00 did r/w jesd204b did parameter register 0x207 0x00 fchar r/w jesd204b frame character register 0x208 undefined jesd_status r/w jesd204b, system status register 0x209 0x00 pd_ch r/w jesd204b channel power-down 0x20a 0x00 jextra_a r/w jesd204b extra lane enable (link a) 0x20b 0x00 jextra_b r/w jesd204b extra lane enable (link b) 0x20c-0x210 undefined reserved r reserved digital down converter registers (0x210-0x2af) 0x211 0xf2 ovr_t0 r/w overrange threshold 0 register 0x212 0xab ovr_t1 r/w overrange threshold 1 register 0x213 0x07 ovr_cfg r/w overrange configuration register 0x214-0x296 undefined reserved r reserved 0x297 undefined spin_id r spin identification value 0x298-0x2af undefined reserved r reserved sysref calibration registers (0x2b0 to 0x2bf) 0x2b0 0x00 src_en r/w sysref calibration enable register 0x2b1 0x05 src_cfg r/w sysref calibration configuration register 0x2b2-0x2b4 undefined src_status r sysref calibration status 0x2b5-0x2b7 0x00 tad r/w devclk aperture delay adjustment register 0x2b8 0x00 tad_ramp r/w devclk timing adjust ramp control register 0x2b9-0x2bf undefined reserved r reserved alarm registers (0x2c0 to 0x2c2) 0x2c0 undefined alarm r alarm interrupt status register 0x2c1 0x1f alm_status r/w alarm status register 0x2c2 0x1f alm_mask r/w alarm mask register
66 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1 register descriptions table 22 lists the access codes for the ADC08DJ3200 registers. table 22. ADC08DJ3200 access type codes access type code description r r read r-w r/w read or write w w write - n value after reset or the default value 7.6.1.1 standard spi-3.0 (0x000 to 0x00f) table 23. standard spi-3.0 registers address reset acronym register name section 0x000 0x30 config_a configuration a register configuration a register (address = 0x000) [reset = 0x30] 0x001 undefined reserved reserved ? 0x002 0x00 device_config device configuration register device configuration register (address = 0x002) [reset = 0x00] 0x003 0x03 chip_type chip type register chip type register (address = 0x003) [reset = 0x03] 0x004-0x005 0x0020 chip_id chip id registers chip id register (address = 0x004 to 0x005) [reset = 0x0020] 0x006 0x0a chip_version chip version register chip version register (address = 0x006) [reset = 0x01] 0x007-0x00b undefined reserved reserved ? 0x00c-0x00d 0x0451 vendor_id vendor identification register vendor identification register (address = 0x00c to 0x00d) [reset = 0x0451] 0x00e-0x00f undefined reserved reserved ? 7.6.1.1.1 configuration a register (address = 0x000) [reset = 0x30] figure 71. configuration a register (config_a) 7 6 5 4 3 2 1 0 soft_reset reserved addr_asc sdo_active reserved r/w-0 r-0 r/w-1 r-1 r-0000 table 24. config_a field descriptions bit field type reset description 7 soft_reset r/w 0 setting this bit results in a full reset of the device. this bit is self- clearing. after writing this bit, the device may take up to 750 ns to reset. during this time, do not perform any spi transactions. 6 reserved r 0 reserved 5 addr_asc r/w 1 0: descend ? decrement address while streaming reads/writes 1: ascend ? increment address while streaming reads/writes (default) 4 sdo_active r 1 always returns 1, indicating that the device always uses 4-wire spi mode. 3-0 reserved r 0000 reserved
67 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.1.2 device configuration register (address = 0x002) [reset = 0x00] figure 72. device configuration register (device_config) 7 6 5 4 3 2 1 0 reserved mode r-0000 00 r/w-00 table 25. device_config field descriptions bit field type reset description 7-2 reserved r 0000 00 reserved 1-0 mode r/w 00 the spi 3.0 specification lists 1 as the low-power functional mode, 2 as the low-power fast resume, and 3 as power-down. this device does not support these modes. 0: normal operation ? full power and full performance (default) 1: normal operation ? full power and full performance 2: power down - everything is powered down. only use this setting for brief periods of time to calibrate the on-chip temperature diode measurement. see the recommended operating conditions table for more information. 3: power down - everything is powered down. only use this setting for brief periods of time to calibrate the on-chip temperature diode measurement. see the recommended operating conditions table for more information. 7.6.1.1.3 chip type register (address = 0x003) [reset = 0x03] figure 73. chip type register (chip_type) 7 6 5 4 3 2 1 0 reserved chip_type r-0000 r-0011 table 26. chip_type field descriptions bit field type reset description 7-4 reserved r 0000 reserved 3-0 chip_type r 0011 always returns 0x3, indicating that the device is a high-speed adc. 7.6.1.1.4 chip id register (address = 0x004 to 0x005) [reset = 0x0020] figure 74. chip id register (chip_id) 15 14 13 12 11 10 9 8 chip_id[15:8] r-0x00h 7 6 5 4 3 2 1 0 chip_id[7:0] r-0x20h table 27. chip_id field descriptions bit field type reset description 15-0 chip_id r 0x0020h always returns 0x0020, indicating that this device is part of the adc08djxx00 family.
68 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.1.5 chip version register (address = 0x006) [reset = 0x01] figure 75. chip version register (chip_version) 7 6 5 4 3 2 1 0 chip_version r-0000 1010 table 28. chip_version field descriptions bit field type reset description 7-0 chip_version r 0000 1010 chip version, returns 0x0a. 7.6.1.1.6 vendor identification register (address = 0x00c to 0x00d) [reset = 0x0451] figure 76. vendor identification register (vendor_id) 15 14 13 12 11 10 9 8 vendor_id[15:8] r-0x04h 7 6 5 4 3 2 1 0 vendor_id[7:0] r-0x51h table 29. vendor_id field descriptions bit field type reset description 15-0 vendor_id r 0x0451h always returns 0x0451 (ti vendor id). 7.6.1.2 user spi configuration (0x010 to 0x01f) table 30. user spi configuration registers address reset acronym register name section 0x010 0x00 usr0 user spi configuration register user spi configuration register (address = 0x010) [reset = 0x00] 0x011-0x01f undefined reserved reserved ? 7.6.1.2.1 user spi configuration register (address = 0x010) [reset = 0x00] figure 77. user spi configuration register (usr0) 7 6 5 4 3 2 1 0 reserved addr_hold r-0000 000 r/w-0 table 31. usr0 field descriptions bit field type reset description 7-1 reserved r/w 0000 000 reserved 0 addr_hold r/w 0 0: use the addr_asc bit to define what happens to the address during streaming (default) 1: address remains static throughout streaming operation; this setting is useful for reading/writing calibration vector information at the cal_data register
69 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.3 miscellaneous analog registers (0x020 to 0x047) table 32. miscellaneous analog registers address reset acronym register name section 0x020-0x028 undefined reserved reserved ? 0x029 0x00 clk_ctrl0 clock control register 0 clock control register 0 (address = 0x029) [reset = 0x00] 0x02a 0x20 clk_ctrl1 clock control register 1 clock control register 1 (address = 0x02a) [reset = 0x00] 0x02b undefined reserved reserved ? 0x02c-0x02e undefined sysref_pos sysref capture position register sysref capture position register (address = 0x02c- 0x02e) [reset = undefined] 0x02f undefined reserved reserved ? 0x030-0x031 0xa000 fs_range_a ina full-scale range adjust register ina full-scale range adjust register (address = 0x030- 0x031) [reset = 0xa000] 0x032-0x033 0xa000 fs_range_b inb full-scale range adjust register inb full-scale range adjust register (address = 0x032- 0x033) [reset = 0xa000] 0x034-0x037 undefined reserved reserved ? 0x038 0x00 bg_bypass internal reference bypass register internal reference bypass register (address = 0x038) [reset = 0x00] 0x039-0x03a undefined reserved reserved ? 0x03b 0x00 sync_ctrl tmstp control register tmstp control register (address = 0x03b) [reset = 0x00] 0x03c-0x047 undefined reserved reserved ? 7.6.1.3.1 clock control register 0 (address = 0x029) [reset = 0x00] figure 78. clock control register 0 (clk_ctrl0) 7 6 5 4 3 2 1 0 reserved sysref_proc_en sysref_recv_en sysref_zoom sysref_sel r/w-0 r/w-0 r/w-0 r/w-0 r/w-0000 table 33. clk_ctrl0 field descriptions bit field type reset description 7 reserved r/w 0 reserved 6 sysref_proc_en r/w 0 this bit enables the sysref processor. this bit must be set to allow the device to process sysref events. sysref_recv_en must be set before setting sysref_proc_en. 5 sysref_recv_en r/w 0 set this bit to enable the sysref receiver circuit. 4 sysref_zoom r/w 0 set this bit to zoom in the sysref strobe status (affects sysref_pos). 3-0 sysref_sel r/w 0000 set this field to select which sysref delay to use. set this field based on the results returned by sysref_pos. set this field to 0 to use sysref calibration.
70 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.3.2 clock control register 1 (address = 0x02a) [reset = 0x00] figure 79. clock control register 1 (clk_ctrl1) 7 6 5 4 3 2 1 0 reserved devclk_lvpecl_en sysref_lvpecl_en sysref_inverted r/w-0010 0 r/w-0 r/w-0 r/w-0 table 34. clk_ctrl1 field descriptions bit field type reset description 7-3 reserved r/w 0010 0 reserved 2 devclk_lvpecl_en r/w 0 activate low-voltage pecl mode for devclk. 1 sysref_lvpecl_en r/w 0 activate low-voltage pecl mode for sysref. 0 sysref_inverted r/w 0 inverts the sysref signal used for alignment. 7.6.1.3.3 sysref capture position register (address = 0x02c-0x02e) [reset = undefined] figure 80. sysref capture position register (sysref_pos) 23 22 21 20 19 18 17 16 sysref_pos[23:16] r-undefined 15 14 13 12 11 10 9 8 sysref_pos[15:8] r-undefined 7 6 5 4 3 2 1 0 sysref_pos[7:0] r-undefined table 35. sysref_pos field descriptions bit field type reset description 23-0 sysref_pos r undefined this field returns a 24-bit status value that indicates the position of the sysref edge with respect to devclk. use this field to program sysref_sel. 7.6.1.3.4 ina full-scale range adjust register (address = 0x030-0x031) [reset = 0xa000] figure 81. ina full-scale range adjust register (fs_range_a) 15 14 13 12 11 10 9 8 fs_range_a[15:8] r/w-0xa0h 7 6 5 4 3 2 1 0 fs_range_a[7:0] r/w-0x00h table 36. fs_range_a field descriptions bit field type reset description 15-0 fs_range_a r/w 0xa000h this field enables adjustment of the analog full-scale range for ina. 0x0000: settings below 0x2000 may result in degraded device performance 0x2000: 500 mv pp - recommended minimum setting 0xa000: 800 mv pp (default) 0xffff: 1000 mv pp
71 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.3.5 inb full-scale range adjust register (address = 0x032-0x033) [reset = 0xa000] figure 82. inb full scale range adjust register (fs_range_b) 15 14 13 12 11 10 9 8 fs_range_b[15:8] r/w-0xa0 7 6 5 4 3 2 1 0 fs_range_b[7:0] r/w-0x00 table 37. fs_range_b field descriptions bit field type reset description 15-0 fs_range_b r/w 0xa000h this field enables adjustment of the analog full-scale range for inb. 0x0000: settings below 0x2000 may result in degraded device performance 0x2000: 500 mv pp - recommended minimum setting 0xa000: 800 mv pp (default) 0xffff: 1000 mv pp 7.6.1.3.6 internal reference bypass register (address = 0x038) [reset = 0x00] figure 83. internal reference bypass register (bg_bypass) 7 6 5 4 3 2 1 0 reserved bg_bypass r/w-0000 000 r/w-0 table 38. bg_bypass field descriptions bit field type reset description 7-1 reserved r/w 0000 000 reserved 0 bg_bypass r/w 0 when set, va11 is used as the voltage reference instead of the internal reference. 7.6.1.3.7 tmstp control register (address = 0x03b) [reset = 0x00] figure 84. tmstp control register (tmstp_ctrl) 7 6 5 4 3 2 1 0 reserved tmstp_lvpecl_en tmstp_recv_en r/w-0000 00 r/w-0 r/w-0 table 39. tmstp_ctrl field descriptions bit field type reset description 7-2 reserved r/w 0000 00 reserved 1 tmstp_lvpecl_en r/w 0 when set, this bit activates the low-voltage pecl mode for the differential tmstp input. 0 tmstp_recv_en r/w 0 this bit enables the differential tmstp input.
72 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.4 serializer registers (0x048 to 0x05f) table 40. serializer registers address reset acronym register name section 0x048 0x00 ser_pe serializer pre-emphasis control register serializer pre-emphasis control register (address = 0x048) [reset = 0x00] 0x049-0x05f undefined reserved reserved ? 7.6.1.4.1 serializer pre-emphasis control register (address = 0x048) [reset = 0x00] figure 85. serializer pre-emphasis control register (ser_pe) 7 6 5 4 3 2 1 0 reserved ser_pe r/w-0000 r/w-0000 table 41. ser_pe field descriptions bit field type reset description 7-4 reserved r/w 0000 reserved 3-0 ser_pe r/w 0000 this field sets the pre-emphasis for the serial lanes to compensate for the low-pass response of the pcb trace. this setting is a global setting that affects all 16 lanes.
73 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5 calibration registers (0x060 to 0x0ff) table 42. calibration registers address reset acronym register name section 0x060 0x01 input_mux input mux control register input mux control register (address = 0x060) [reset = 0x01] 0x061 0x01 cal_en calibration enable register calibration enable register (address = 0x061) [reset = 0x01] 0x062 0x01 cal_cfg0 calibration configuration 0 register calibration configuration 0 register (address = 0x062) [reset = 0x01] 0x063-0x069 undefined reserved reserved ? 0x06a undefined cal_status calibration status register calibration status register (address = 0x06a) [reset = undefined] 0x06b 0x00 cal_pin_cfg calibration pin configuration register calibration pin configuration register (address = 0x06b) [reset = 0x00] 0x06c 0x01 cal_soft_trig calibration software trigger register calibration software trigger register (address = 0x06c) [reset = 0x01] 0x06d undefined reserved reserved ? 0x06e 0x88 cal_lp low-power background calibration register low-power background calibration register (address = 0x06e) [reset = 0x88] 0x06f undefined reserved reserved ? 0x070 0x00 cal_data_en calibration data enable register calibration data enable register (address = 0x070) [reset = 0x00] 0x071 undefined cal_data calibration data register calibration data register (address = 0x071) [reset = undefined] 0x072-0x079 undefined reserved reserved ? 0x07a undefined gain_trim_a channel a gain trim register channel a gain trim register (address = 0x07a) [reset = undefined] 0x07b undefined gain_trim_b channel b gain trim register channel b gain trim register (address = 0x07b) [reset = undefined] 0x07c undefined bg_trim band-gap reference trim register band-gap reference trim register (address = 0x07c) [reset = undefined] 0x07d undefined reserved reserved ? 0x07e undefined rtrim_a vina input resistor trim register vina input resistor trim register (address = 0x07e) [reset = undefined] 0x07f undefined rtrim_b vinb input resistor trim register vinb input resistor trim register (address = 0x07f) [reset = undefined] 0x080 undefined tadj_a_fg90 timing adjustment for a-adc, single-channel mode, foreground calibration register timing adjust for a-adc, single-channel mode, foreground calibration register (address = 0x080) [reset = undefined] 0x081 undefined tadj_b_fg0 timing adjustment for b-adc, single-channel mode, foreground calibration register timing adjust for b-adc, single-channel mode, foreground calibration register (address = 0x081) [reset = undefined] 0x082 undefined tadj_a_bg90 timing adjustment for a-adc, single-channel mode, background calibration register timing adjust for a-adc, single-channel mode, background calibration register (address = 0x082) [reset = undefined] 0x083 undefined tadj_c_bg0 timing adjustment for c-adc, single-channel mode, background calibration register timing adjust for c-adc, single-channel mode, background calibration register (address = 0x084) [reset = undefined] 0x084 undefined tadj_c_bg90 timing adjustment for c-adc, single-channel mode, background calibration register timing adjust for c-adc, single-channel mode, background calibration register (address = 0x084) [reset = undefined] 0x085 undefined tadj_b_bg0 timing adjustment for b-adc, single-channel mode, background calibration register timing adjust for b-adc, single-channel mode, background calibration register (address = 0x085) [reset = undefined] 0x086 undefined tadj_a timing adjustment for a-adc, dual- channel mode register timing adjust for a-adc, dual-channel mode register (address = 0x086) [reset = undefined] 0x087 undefined tadj_ca timing adjustment for c-adc acting for a-adc, dual-channel mode register timing adjust for c-adc acting for a-adc, dual-channel mode register (address = 0x087) [reset = undefined] 0x088 undefined tadj_cb timing adjustment for c-adc acting for b-adc, dual-channel mode register timing adjust for c-adc acting for b-adc, dual-channel mode register (address = 0x088) [reset = undefined]
74 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated table 42. calibration registers (continued) address reset acronym register name section 0x089 undefined tadj_b timing adjustment for b-adc, dual- channel mode register timing adjust for b-adc, dual-channel mode register (address = 0x089) [reset = undefined] 0x08a-0x08b undefined oadj_a_ina offset adjustment for a-adc and ina register offset adjustment for a-adc and ina register (address = 0x08a-0x08b) [reset = undefined] 0x08c-0x08d undefined oadj_a_inb offset adjustment for a-adc and inb register offset adjustment for a-adc and inb register (address = 0x08c-0x08d) [reset = undefined] 0x08e-0x08f undefined oadj_c_ina offset adjustment for c-adc and ina register offset adjustment for c-adc and ina register (address = 0x08e-0x08f) [reset = undefined] 0x090-0x091 undefined oadj_c_inb offset adjustment for c-adc and inb register offset adjustment for c-adc and inb register (address = 0x090-0x091) [reset = undefined] 0x092-0x093 undefined oadj_b_ina offset adjustment for b-adc and ina register offset adjustment for b-adc and ina register (address = 0x092-0x093) [reset = undefined] 0x094-0x095 undefined oadj_b_inb offset adjustment for b-adc and inb register offset adjustment for b-adc and inb register (address = 0x094-0x095) [reset = undefined] 0x096 undefined reserved reserved ? 0x097 0x00 0sfilt0 offset filtering control 0 offset filtering control 0 register (address = 0x097) [reset = 0x00] 0x098 0x33 osfilt1 offset filtering control 1 offset filtering control 1 register (address = 0x098) [reset = 0x33] 0x099-0x0ff undefined reserved reserved ? 7.6.1.5.1 input mux control register (address = 0x060) [reset = 0x01] figure 86. input mux control register (input_mux) 7 6 5 4 3 2 1 0 reserved dual_input reserved single_input r/w-000 r/w-0 r/w-00 r/w-01 table 43. input_mux field descriptions bit field type reset description 7-5 reserved r/w 000 reserved 4 dual_input r/w 0 this bit selects inputs for dual-channel modes. if jmode is selecting a single-channel mode, this register has no effect. 0: a channel samples ina, b channel samples inb (no swap, default) 1: a channel samples inb, b channel samples ina (swap) 3-2 reserved r/w 00 reserved 1-0 single_input r/w 01 thid field defines which input is sampled in single-channel mode. if jmode is not selecting a single-channel mode, this register has no effect. 0: reserved 1: ina is used (default) 2: inb is used 3: reserved
75 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.2 calibration enable register (address = 0x061) [reset = 0x01] figure 87. calibration enable register (cal_en) 7 6 5 4 3 2 1 0 reserved cal_en r/w-0000 000 r/w-1 table 44. cal_en field descriptions bit field type reset description 7-1 reserved r/w 0000 000 reserved 0 cal_en r/w 1 calibration enable. set this bit high to run calibration. set this bit low to hold the calibration in reset to program new calibration settings. clearing cal_en also resets the clock dividers that clock the digital block and jesd204b interface. some calibration registers require clearing cal_en before making any changes. all registers with this requirement contain a note in their descriptions. after changing the registers, set cal_en to re-run calibration with the new settings. always set cal_en before setting jesd_en. always clear jesd_en before clearing cal_en. 7.6.1.5.3 calibration configuration 0 register (address = 0x062) [reset = 0x01] only change this register when cal_en is 0. figure 88. calibration configuration 0 register (cal_cfg0) 7 6 5 4 3 2 1 0 reserved cal_osfilt cal_bgos cal_os cal_bg cal_fg r/w-000 r/w-0 r/w-0 r/w-0 r/w-0 r/w-1 table 45. cal_cfg0 field descriptions bit field type reset description 7-5 reserved r/w 0000 reserved 4 cal_osfilt r/w 0 enable offset filtering by setting this bit high. 3 cal_bgos r/w 0 0 : disables background offset calibration (default) 1: enables background offset calibration (requires cal_bg to be set). 2 cal_os r/w 0 0 : disables foreground offset calibration (default) 1: enables foreground offset calibration (requires cal_fg to be set) 1 cal_bg r/w 0 0 : disables background calibration (default) 1: enables background calibration 0 cal_fg r/w 1 0 : resets calibration values, skips foreground calibration 1: resets calibration values, then runs foreground calibration (default)
76 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.4 calibration status register (address = 0x06a) [reset = undefined] figure 89. calibration status register (cal_status) 7 6 5 4 3 2 1 0 reserved cal_stopped fg_done r r r table 46. cal_status field descriptions bit field type reset description 7-2 reserved r reserved 1 cal_stopped r this bit returns a 1 when the background calibration has successfully stopped at the requested phase. this bit returns a 0 when calibration starts operating again. if background calibration is disabled, this bit is set when foreground calibration is completed or skipped. 0 fg_done r this bit is set high when the foreground calibration completes. 7.6.1.5.5 calibration pin configuration register (address = 0x06b) [reset = 0x00] figure 90. calibration pin configuration register (cal_pin_cfg) 7 6 5 4 3 2 1 0 reserved cal_status_sel cal_trig_en r/w-0000 0 r/w-00 r/w-0 table 47. cal_pin_cfg field descriptions bit field type reset description 7-3 reserved r/w 0000 0 reserved 2-1 cal_status_sel r/w 00 0: calstat output pin matches fg_done 1: reserved 2: calstat output pin matches alarm 3: calstat output pin is always low 0 cal_trig_en r/w 0 choose the hardware or software trigger source with this bit. 0: use the cal_soft_trig register for the calibration trigger; the cal_trig input is disabled (ignored) 1: use the cal_trig input for the calibration trigger; the cal_soft_trig register is ignored 7.6.1.5.6 calibration software trigger register (address = 0x06c) [reset = 0x01] figure 91. calibration software trigger register (cal_soft_trig) 7 6 5 4 3 2 1 0 reserved cal_soft_trig r/w-0000 000 r/w-1 table 48. cal_soft_trig field descriptions bit field type reset description 7-1 reserved r/w 0000 000 reserved 0 cal_soft_trig r/w 1 cal_soft_trig is a software bit to provide functionality of the cal_trig input. program cal_trig_en = 0 to use cal_soft_trig for the calibration trigger. if no calibration trigger is needed, leave cal_trig_en = 0 and cal_soft_trig = 1 (trigger is set high).
77 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.7 low-power background calibration register (address = 0x06e) [reset = 0x88] figure 92. low-power background calibration register (cal_lp) 7 6 5 4 3 2 1 0 lp_sleep_dly lp_wake_dly reserved lp_trig lp_en r/w-010 r/w-01 r/w-0 r/w-0 r/w-0 table 49. cal_lp field descriptions bit field type reset description 7-5 lp_sleep_dly r/w 010 adjust how long an adc sleeps before waking up for calibration (only applies when lp_en = 1 and lp_trig = 0). values below 4 are not recommended because of limited overall power reduction benefits. 0: sleep delay = (2 3 + 1) 256 t devclk 1: sleep delay = (2 15 + 1) 256 t devclk 2: sleep delay = (2 18 + 1) 256 t devclk 3: sleep delay = (2 21 + 1) 256 t devclk 4: sleep delay = (2 24 + 1) 256 t devclk : default is approximately 1338 ms with a 3.2-ghz clock 5: sleep delay = (2 27 + 1) 256 t devclk 6: sleep delay = (2 30 + 1) 256 t devclk 7: sleep delay = (2 33 + 1) 256 t devclk 4-3 lp_wake_dly r/w 01 adjust how much time is given up for settling before calibrating an adc after wake-up (only applies when lp_en = 1). values lower than 1 are not recommended because there is insufficient time for the core to stabilize before calibration begins. 0:wake delay = (2 3 + 1) 256 t devclk 1: wake delay = (2 18 + 1) 256 t devclk : default is approximately 21 ms with a 3.2-ghz clock 2: wake delay = (2 21 + 1) 256 t devclk 3: wake delay = (2 24 + 1) 256 t devclk 2 reserved r/w 0 reserved 1 lp_trig r/w 0 0: adc sleep duration is set by lp_sleep_dly (autonomous mode) 1: adcs sleep until woken by a trigger; an adc is awoken when the calibration trigger (cal_soft_trig bit or cal_trig input) is low 0 lp_en r/w 0 0: disables low-power background calibration (default) 1: enables low-power background calibration (only applies when cal_bg = 1) 7.6.1.5.8 calibration data enable register (address = 0x070) [reset = 0x00] figure 93. calibration data enable register (cal_data_en) 7 6 5 4 3 2 1 0 reserved cal_data_en r/w-0000 000 r/w-0 table 50. cal_data_en field descriptions bit field type reset description 7-1 reserved r/w 0000 000 reserved 0 cal_data_en r/w 0 set this bit to enable the cal_data register to enable reading and writing of calibration data; see the calibration data register for more information.
78 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.9 calibration data register (address = 0x071) [reset = undefined] figure 94. calibration data register (cal_data) 7 6 5 4 3 2 1 0 cal_data r/w table 51. cal_data field descriptions bit field type reset description 7-0 cal_data r/w undefined after setting cal_data_en, repeated reads of this register return all calibration values for the adcs. repeated writes of this register input all calibration values for the adcs. to read the calibration data, read the register 673 times. to write the vector, write the register 673 times with previously stored calibration data. to speed up the read/write operation, set addr_hold = 1 and use the streaming read or write process. accessing the cal_data register when cal_stopped = 0 corrupts the calibration. also, stopping the process before reading or writing 673 times leaved the calibration data in an invalid state. 7.6.1.5.10 channel a gain trim register (address = 0x07a) [reset = undefined] figure 95. channel a gain trim register (gain_trim_a) 7 6 5 4 3 2 1 0 gain_trim_a r/w table 52. gain_trim_a field descriptions bit field type reset description 7-0 gain_trim_a r/w undefined this register enables gain trim of channel a. after reset, the factory-trimmed value can be read and adjusted as required. 7.6.1.5.11 channel b gain trim register (address = 0x07b) [reset = undefined] figure 96. channel b gain trim register (gain_trim_b) 7 6 5 4 3 2 1 0 gain_trim_b r/w table 53. gain_trim_b field descriptions bit field type reset description 7-0 gain_trim_b r/w undefined this register enables gain trim of channel b. after reset, the factory-trimmed value can be read and adjusted as required.
79 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.12 band-gap reference trim register (address = 0x07c) [reset = undefined] figure 97. band-gap reference trim register (bg_trim) 7 6 5 4 3 2 1 0 reserved bg_trim r/w-0000 r/w table 54. bg_trim field descriptions bit field type reset description 7-4 reserved r/w 0000 reserved 3-0 bg_trim r/w undefined this register enables the internal band-gap reference to be trimmed. after reset, the factory-trimmed value can be read and adjusted as required. 7.6.1.5.13 vina input resistor trim register (address = 0x07e) [reset = undefined] figure 98. vina input resistor trim register (rtrim_a) 7 6 5 4 3 2 1 0 rtrim r/w table 55. rtrim_a field descriptions bit field type reset description 7-0 rtrim_a r/w undefined this register controls the vina adc input termination trim. after reset, the factory-trimmed value can be read and adjusted as required. 7.6.1.5.14 vinb input resistor trim register (address = 0x07f) [reset = undefined] figure 99. vinb input resistor trim register (rtrim_b) 7 6 5 4 3 2 1 0 rtrim r/w table 56. rtrim_b field descriptions bit field type reset description 7-0 rtrim_b r/w undefined this register controls the vinb adc input termination trim. after reset, the factory-trimmed value can be read and adjusted as required.
80 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.15 timing adjust for a-adc, single-channel mode, foreground calibration register (address = 0x080) [reset = undefined] figure 100. register (tadj_a_fg90) 7 6 5 4 3 2 1 0 tadj_a_fg90 r/w table 57. tadj_a_fg90 field descriptions bit field type reset description 7-0 tadj_a_fg90 r/w undefined this register (and other subsequent tadj* registers) are used to adjust the sampling instant of each adc core. different tadj registers apply to different adcs under different modes or phases of background calibration. after reset, the factory- trimmed value can be read and adjusted as required. 7.6.1.5.16 timing adjust for b-adc, single-channel mode, foreground calibration register (address = 0x081) [reset = undefined] figure 101. register (tadj_b_fg0) 7 6 5 4 3 2 1 0 tadj_b_fg0 r/w table 58. tadj_b_fg0 field descriptions bit field type reset description 7-0 tadj_b_fg0 r/w undefined this register (and other subsequent tadj* registers) are used to adjust the sampling instant of each adc core. different tadj registers apply to different adcs under different modes or phases of background calibration. after reset, the factory- trimmed value can be read and adjusted as required. 7.6.1.5.17 timing adjust for a-adc, single-channel mode, background calibration register (address = 0x082) [reset = undefined] figure 102. register (tadj_a_bg90) 7 6 5 4 3 2 1 0 tadj_a_bg90 r/w table 59. tadj_b_fg0 field descriptions bit field type reset description 7-0 tadj_a_bg90 r/w undefined this register (and other subsequent tadj* registers) are used to adjust the sampling instant of each adc core. different tadj registers apply to different adcs under different modes or phases of background calibration. after reset, the factory- trimmed value can be read and adjusted as required.
81 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.18 timing adjust for c-adc, single-channel mode, background calibration register (address = 0x083) [reset = undefined] figure 103. timing adjust for c-adc, single-channel mode, background calibration register (tadj_c_bg0) 7 6 5 4 3 2 1 0 tadj_c_bg0 r/w table 60. tadj_b_fg0 field descriptions bit field type reset description 7-0 tadj_c_bg0 r/w undefined this register (and other subsequent tadj* registers) are used to adjust the sampling instant of each adc core. different tadj registers apply to different adcs under different modes or phases of background calibration. after reset, the factory- trimmed value can be read and adjusted as required. 7.6.1.5.19 timing adjust for c-adc, single-channel mode, background calibration register (address = 0x084) [reset = undefined] figure 104. timing adjust for c-adc, single-channel mode, background calibration register (tadj_c_bg90) 7 6 5 4 3 2 1 0 tadj_c_bg90 r/w table 61. tadj_b_fg0 field descriptions bit field type reset description 7-0 tadj_c_bg90 r/w undefined this register (and other subsequent tadj* registers) are used to adjust the sampling instant of each adc core. different tadj registers apply to different adcs under different modes or phases of background calibration. after reset, the factory- trimmed value can be read and adjusted as required. 7.6.1.5.20 timing adjust for b-adc, single-channel mode, background calibration register (address = 0x085) [reset = undefined] figure 105. timing adjust for b-adc, single-channel mode, background calibration register (tadj_b_bg0) 7 6 5 4 3 2 1 0 tadj_b_bg0 r/w table 62. tadj_b_fg0 field descriptions bit field type reset description 7-0 tadj_b_bg0 r/w undefined this register (and other subsequent tadj* registers) are used to adjust the sampling instant of each adc core. different tadj registers apply to different adcs under different modes or phases of background calibration. after reset, the factory- trimmed value can be read and adjusted as required.
82 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.21 timing adjust for a-adc, dual-channel mode register (address = 0x086) [reset = undefined] figure 106. timing adjust for a-adc, dual-channel mode register (tadj_a) 7 6 5 4 3 2 1 0 tadj_a r/w table 63. tadj_a field descriptions bit field type reset description 7-0 tadj_a r/w undefined this register (and other subsequent tadj* registers) are used to adjust the sampling instant of each adc core. different tadj registers apply to different adcs under different modes or phases of background calibration. after reset, the factory- trimmed value can be read and adjusted as required. 7.6.1.5.22 timing adjust for c-adc acting for a-adc, dual-channel mode register (address = 0x087) [reset = undefined] figure 107. timing adjust for c-adc acting for a-adc, dual-channel mode register (tadj_ca) 7 6 5 4 3 2 1 0 tadj_ca r/w table 64. tadj_ca field descriptions bit field type reset description 7-0 tadj_ca r/w undefined this register (and other subsequent tadj* registers) are used to adjust the sampling instant of each adc core. different tadj registers apply to different adcs under different modes or phases of background calibration. after reset, the factory- trimmed value can be read and adjusted as required. 7.6.1.5.23 timing adjust for c-adc acting for b-adc, dual-channel mode register (address = 0x088) [reset = undefined] figure 108. timing adjust for c-adc acting for b-adc, dual-channel mode register (tadj_cb) 7 6 5 4 3 2 1 0 tadj_cb r/w table 65. tadj_cb field descriptions bit field type reset description 7-0 tadj_cb r/w undefined this register (and other subsequent tadj* registers) are used to adjust the sampling instant of each adc core. different tadj registers apply to different adcs under different modes or phases of background calibration. after reset, the factory- trimmed value can be read and adjusted as required.
83 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.24 timing adjust for b-adc, dual-channel mode register (address = 0x089) [reset = undefined] figure 109. timing adjust for b-adc, dual-channel mode register (tadj_b) 7 6 5 4 3 2 1 0 tadj_b r/w table 66. tadj_b field descriptions bit field type reset description 7-0 tadj_b r/w undefined this register (and other subsequent tadj* registers) are used to adjust the sampling instant of each adc core. different tadj registers apply to different adcs under different modes or phases of background calibration. after reset, the factory- trimmed value can be read and adjusted as required. 7.6.1.5.25 offset adjustment for a-adc and ina register (address = 0x08a-0x08b) [reset = undefined] figure 110. offset adjustment for a-adc and ina register (oadj_a_ina) 15 14 13 12 11 10 9 8 reserved oadj_a_ina[11:8] r/w-0000 r/w 7 6 5 4 3 2 1 0 oadj_a_ina[7:0] r/w table 67. oadj_a_ina field descriptions bit field type reset description 15-12 reserved r/w 0000 reserved 11-0 oadj_a_ina r/w undefined offset adjustment value for adc0 (a-adc) applied when adc0 samples ina. the format is unsigned. after reset, the factory- trimmed value can be read and adjusted as required. important notes: ? never write oadj* registers while foreground calibration is underway ? never write oadj* registers if cal_bg and cal_bgos are set ? if cal_os = 1 and cal_bgos = 0, only read oadj* registers if fg_done = 1 ? if cal_bg = 1 and cal_bgos = 1, only read oadj* register if cal_stopped = 1
84 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.26 offset adjustment for a-adc and inb register (address = 0x08c-0x08d) [reset = undefined] figure 111. offset adjustment for a-adc and inb register (oadj_a_inb) 15 14 13 12 11 10 9 8 reserved oadj_a_inb[11:8] r/w-0000 r/w 7 6 5 4 3 2 1 0 oadj_a_inb[7:0] r/w table 68. oadj_a_inb field descriptions bit field type reset description 15-12 reserved r/w 0000 reserved 11-0 oadj_a_inb r/w undefined offset adjustment value for adc0 (a-adc) applied when adc0 samples inb. the format is unsigned. after reset, the factory- trimmed value can be read and adjusted as required. important notes: ? never write oadj* registers while foreground calibration is underway ? never write oadj* registers if cal_bg and cal_bgos are set ? if cal_os = 1 and cal_bgos = 0, only read oadj* registers if fg_done = 1 ? if cal_bg = 1 and cal_bgos = 1, only read oadj* register if cal_stopped = 1 7.6.1.5.27 offset adjustment for c-adc and ina register (address = 0x08e-0x08f) [reset = undefined] figure 112. offset adjustment for c-adc and ina register (oadj_c_ina) 15 14 13 12 11 10 9 8 reserved oadj_c_ina[11:8] r/w-0000 r/w 7 6 5 4 3 2 1 0 oadj_c_ina[7:0] r/w table 69. oadj_c_ina field descriptions bit field type reset description 15-12 reserved r/w 0000 reserved 11-0 oadj_c_ina r/w undefined offset adjustment value for adc1 (a-adc) applied when adc1 samples ina. the format is unsigned. after reset, the factory- trimmed value can be read and adjusted as required. important notes: ? never write oadj* registers while foreground calibration is underway ? never write oadj* registers if cal_bg and cal_bgos are set ? if cal_os = 1 and cal_bgos = 0, only read oadj* registers if fg_done = 1 ? if cal_bg = 1 and cal_bgos = 1, only read oadj* register if cal_stopped = 1
85 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.28 offset adjustment for c-adc and inb register (address = 0x090-0x091) [reset = undefined] figure 113. offset adjustment for c-adc and inb register (oadj_c_inb) 15 14 13 12 11 10 9 8 reserved oadj_c_inb[11:8] r/w-0000 r/w 7 6 5 4 3 2 1 0 oadj_c_inb[7:0] r/w table 70. oadj_c_inb field descriptions bit field type reset description 15-12 reserved r/w 0000 reserved 11-0 oadj_c_inb r/w undefined offset adjustment value for adc1 (a-adc) applied when adc1 samples inb. the format is unsigned. after reset, the factory- trimmed value can be read and adjusted as required. important notes: ? never write oadj* registers while foreground calibration is underway ? never write oadj* registers if cal_bg and cal_bgos are set ? if cal_os = 1 and cal_bgos = 0, only read oadj* registers if fg_done = 1 ? if cal_bg = 1 and cal_bgos = 1, only read oadj* register if cal_stopped = 1 7.6.1.5.29 offset adjustment for b-adc and ina register (address = 0x092-0x093) [reset = undefined] figure 114. offset adjustment for b-adc and ina register (oadj_b_ina) 15 14 13 12 11 10 9 8 reserved oadj_b_ina[11:8] r/w-0000 r/w 7 6 5 4 3 2 1 0 oadj_b_ina[7:0] r/w table 71. oadj_b_ina field descriptions bit field type reset description 15-12 reserved r/w 0000 reserved 11-0 oadj_b_ina r/w undefined offset adjustment value for adc2 (b-adc) applied when adc2 samples ina. the format is unsigned. after reset, the factory- trimmed value can be read and adjusted as required. important notes: ? never write oadj* registers while foreground calibration is underway ? never write oadj* registers if cal_bg and cal_bgos are set ? if cal_os = 1 and cal_bgos = 0, only read oadj* registers if fg_done = 1 ? if cal_bg = 1 and cal_bgos = 1, only read oadj* register if cal_stopped = 1
86 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.30 offset adjustment for b-adc and inb register (address = 0x094-0x095) [reset = undefined] figure 115. offset adjustment for b-adc and inb register (oadj_b_inb) 15 14 13 12 11 10 9 8 reserved oadj_b_inb[11:8] r/w-0000 r/w 7 6 5 4 3 2 1 0 oadj_b_inb[7:0] r/w table 72. oadj_b_inb field descriptions bit field type reset description 15-12 reserved r/w 0000 reserved 11-0 oadj_b_inb r/w undefined offset adjustment value for adc2 (b-adc) applied when adc2 samples inb. the format is unsigned. after reset, the factory- trimmed value can be read and adjusted as required. important notes: ? never write oadj* registers while foreground calibration is underway ? never write oadj* registers if cal_bg and cal_bgos are set ? if cal_os = 1 and cal_bgos=0, only read oadj* registers if fg_done = 1 ? if cal_bg = 1 and cal_bgos=1, only read oadj* register if cal_stopped = 1 7.6.1.5.31 offset filtering control 0 register (address = 0x097) [reset = 0x00] figure 116. offset filtering control 0 register (osfilt0) 7 6 5 4 3 2 1 0 reserved dc_restore r/w-0000 000 r/w table 73. osfilt0 field descriptions bit field type reset description 7-1 reserved r/w 0000 000 reserved 0 dc_restore r/w 0 when set, the offset filtering feature (enabled by cal_osfilt) filters only the offset mismatch across adc banks and does not remove the frequency content near dc. when cleared, the feature filters all offsets from all banks, thus filtering all dc content in the signal; see the offset filtering section.
87 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.5.32 offset filtering control 1 register (address = 0x098) [reset = 0x33] figure 117. offset filtering control 1 register (osfilt1) 7 6 5 4 3 2 1 0 osfilt_bw osfilt_soak r/w-0011 r/w-0011 table 74. osfilt1 field descriptions bit field type reset description 7-4 osfilt_bw r/w 0011 this field adjusts the iir filter bandwidth for the offset filtering feature (enabled by cal_osfilt). more bandwidth suppresses more flicker noise from the adcs and reduces the offset spurs. less bandwidth minimizes the impact of the filters on the mission mode signal. osfilt_bw: iir coefficient: ? 3-db bandwidth (single sided) 0: reserved 1: 2 -10 : 609e-9 f devclk 2: 2 -11 : 305e-9 f devclk 3: 2 -12 : 152e-9 f devclk 4: 2 -13 : 76e-9 f devclk 5: 2 -14 : 38e-9 f devclk 6-15: reserved 3-0 osfilt_soak r/w 0011 this field adjusts the iir soak time for the offset filtering feature. this field applies when offset filtering and background calibration are both enabled. this field determines how long the iir filter is allowed to settle when first connected to an adc after the adc is calibrated. after the soak time completes, the adc is placed online using the iir filter. set osfilt_soak = osfilt_bw.
88 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.6 adc bank registers (0x100 to 0x15f) table 75. adc bank registers address reset acronym register name section 0x100-0x101 undefined reserved reserved ? 0x102 undefined b0_time_0 timing adjustment for bank 0 (0 clock) register timing adjustment for bank 0 (0 clock) register (address = 0x102) [reset = undefined] 0x103 undefined b0_time_90 timing adjustment for bank 0 ( ? 90 clock) register timing adjustment for bank 0 ( ? 90 clock) register (address = 0x103) [reset = undefined] 0x104-0x111 undefined reserved reserved ? 0x112 undefined b1_time_0 timing adjustment for bank 1 (0 clock) register timing adjustment for bank 1 (0 clock) register (address = 0x112) [reset = undefined] 0x113 undefined b1_time_90 timing adjustment for bank 1 ( ? 90 clock) register timing adjustment for bank 1 ( ? 90 clock) register (address = 0x113) [reset = undefined] 0x114-0x121 undefined reserved reserved ? 0x122 undefined b2_time_0 timing adjustment for bank 2 (0 clock) register timing adjustment for bank 2 (0 clock) register (address = 0x122) [reset = undefined] 0x123 undefined b2_time_90 timing adjustment for bank 2 ( ? 90 clock) register timing adjustment for bank 2 ( ? 90 clock) register (address = 0x123) [reset = undefined] 0x124-0x131 undefined reserved reserved ? 0x132 undefined b3_time_0 timing adjustment for bank 3 (0 clock) register timing adjustment for bank 3 (0 clock) register (address = 0x132) [reset = undefined] 0x133 undefined b3_time_90 timing adjustment for bank 3 ( ? 90 clock) register timing adjustment for bank 3 ( ? 90 clock) register (address = 0x133) [reset = undefined] 0x134-0x141 undefined reserved reserved ? 0x142 undefined b4_time_0 timing adjustment for bank 4 (0 clock) register timing adjustment for bank 4 (0 clock) register (address = 0x142) [reset = undefined] 0x143 undefined b4_time_90 timing adjustment for bank 4 ( ? 90 clock) register timing adjustment for bank 4 ( ? 90 clock) register (address = 0x143) [reset = undefined] 0x144-0x151 undefined reserved reserved ? 0x152 undefined b5_time_0 timing adjustment for bank 5 (0 clock) register timing adjustment for bank 5 (0 clock) register (address = 0x152) [reset = undefined] 0x153 undefined b5_time_90 timing adjustment for bank 5 ( ? 90 clock) register timing adjustment for bank 5 ( ? 90 clock) register (address = 0x153) [reset = undefined] 0x154-0x15f undefined reserved reserved ? 7.6.1.6.1 timing adjustment for bank 0 (0 clock) register (address = 0x102) [reset = undefined] figure 118. timing adjustment for bank 0 (0 clock) register (b0_time_0) 7 6 5 4 3 2 1 0 b0_time_0 r/w table 76. b0_time_0 field descriptions bit field type reset description 7-0 b0_time_0 r/w undefined time adjustment for bank 0 (applied when the adc is configured for 0 clock phase). after reset, the factory-trimmed value can be read and adjusted as required.
89 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.6.2 timing adjustment for bank 0 ( ? 90 clock) register (address = 0x103) [reset = undefined] figure 119. timing adjustment for bank 0 ( ? 90 clock) register (b0_time_90) 7 6 5 4 3 2 1 0 b0_time_90 r/w table 77. b0_time_90 field descriptions bit field type reset description 7-0 b0_time_90 r/w undefined time adjustment for bank 0 (applied when the adc is configured for ? 90 clock phase). after reset, the factory-trimmed value can be read and adjusted as required. 7.6.1.6.3 timing adjustment for bank 1 (0 clock) register (address = 0x112) [reset = undefined] figure 120. timing adjustment for bank 1 (0 clock) register (b1_time_0) 7 6 5 4 3 2 1 0 b1_time_0 r/w table 78. b1_time_0 field descriptions bit field type reset description 7-0 b1_time_0 r/w undefined time adjustment for bank 1 (applied when the adc is configured for 0 clock phase). after reset, the factory-trimmed value can be read and adjusted as required. 7.6.1.6.4 timing adjustment for bank 1 ( ? 90 clock) register (address = 0x113) [reset = undefined] figure 121. timing adjustment for bank 1 ( ? 90 clock) register (b1_time_90) 7 6 5 4 3 2 1 0 b1_time_90 r/w table 79. b1_time_90 field descriptions bit field type reset description 7-0 b1_time_90 r/w undefined time adjustment for bank 1 (applied when the adc is configured for ? 90 clock phase). after reset, the factory-trimmed value can be read and adjusted as required. 7.6.1.6.5 timing adjustment for bank 2 (0 clock) register (address = 0x122) [reset = undefined] figure 122. timing adjustment for bank 2 (0 clock) register (b2_time_0) 7 6 5 4 3 2 1 0 b2_time_0 r/w table 80. b2_time_0 field descriptions bit field type reset description 7-0 b2_time_0 r/w undefined time adjustment for bank 2 (applied when the adc is configured for 0 clock phase). after reset, the factory-trimmed value can be read and adjusted as required.
90 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.6.6 timing adjustment for bank 2 ( ? 90 clock) register (address = 0x123) [reset = undefined] figure 123. timing adjustment for bank 2 ( ? 90 clock) register (b2_time_90) 7 6 5 4 3 2 1 0 b2_time_90 r/w table 81. b2_time_90 field descriptions bit field type reset description 7-0 b2_time_90 r/w undefined time adjustment for bank 2 (applied when the adc is configured for ? 90 clock phase). after reset, the factory-trimmed value can be read and adjusted as required. 7.6.1.6.7 timing adjustment for bank 3 (0 clock) register (address = 0x132) [reset = undefined] figure 124. timing adjustment for bank 3 (0 clock) register (b3_time_0) 7 6 5 4 3 2 1 0 b3_time_0 r/w table 82. b3_time_0 field descriptions bit field type reset description 7-0 b3_time_0 r/w undefined time adjustment for bank 3 (applied when the adc is configured for 0 clock phase). after reset, the factory-trimmed value can be read and adjusted as required. 7.6.1.6.8 timing adjustment for bank 3 ( ? 90 clock) register (address = 0x133) [reset = undefined] figure 125. timing adjustment for bank 3 ( ? 90 clock) register (b3_time_90) 7 6 5 4 3 2 1 0 b3_time_90 r/w table 83. b3_time_90 field descriptions bit field type reset description 7-0 b3_time_90 r/w undefined time adjustment for bank 3 (applied when the adc is configured for ? 90 clock phase). after reset, the factory-trimmed value can be read and adjusted as required. 7.6.1.6.9 timing adjustment for bank 4 (0 clock) register (address = 0x142) [reset = undefined] figure 126. timing adjustment for bank 4 (0 clock) register (b4_time_0) 7 6 5 4 3 2 1 0 b4_time_0 r/w table 84. b4_time_0 field descriptions bit field type reset description 7-0 b4_time_0 r/w undefined time adjustment for bank 4 (applied when the adc is configured for 0 clock phase). after reset, the factory-trimmed value can be read and adjusted as required.
91 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.6.10 timing adjustment for bank 4 ( ? 90 clock) register (address = 0x143) [reset = undefined] figure 127. timing adjustment for bank 4 ( ? 90 clock) register (b4_time_90) 7 6 5 4 3 2 1 0 b4_time_90 r/w table 85. b4_time_90 field descriptions bit field type reset description 7-0 b4_time_90 r/w undefined time adjustment for bank 4 (applied when the adc is configured for ? 90 clock phase). after reset, the factory-trimmed value can be read and adjusted as required. 7.6.1.6.11 timing adjustment for bank 5 (0 clock) register (address = 0x152) [reset = undefined] figure 128. timing adjustment for bank 5 (0 clock) register (b5_time_0) 7 6 5 4 3 2 1 0 b5_time_0 r/w table 86. b5_time_0 field descriptions bit field type reset description 7-0 b5_time_0 r/w undefined time adjustment for bank 5 (applied when the adc is configured for 0 clock phase). after reset, the factory-trimmed value can be read and adjusted as required. 7.6.1.6.12 timing adjustment for bank 5 ( ? 90 clock) register (address = 0x153) [reset = undefined] figure 129. timing adjustment for bank 5 ( ? 90 clock) register (b5_time_90) 7 6 5 4 3 2 1 0 b5_time_90 r/w table 87. b5_time_90 field descriptions bit field type reset description 7-0 b5_time_90 r/w undefined time adjustment for bank 5 (applied when the adc is configured for ? 90 clock phase). after reset, the factory-trimmed value can be read and adjusted as required.
92 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.7 lsb control registers (0x160 to 0x1ff) table 88. lsb control registers address reset acronym register name section 0x160 0x00 enc_lsb lsb control bit output register lsb control bit output register (address = 0x160) [reset = 0x00] 0x161-0x1ff undefined reserved reserved ? 7.6.1.7.1 lsb control bit output register (address = 0x160) [reset = 0x00] figure 130. lsb control bit output register (enc_lsb) 7 6 5 4 3 2 1 0 reserved timestamp_en r/w-0000 000 r/w-0 table 89. enc_lsb field descriptions bit field type reset description 7-1 reserved r/w 0000 000 reserved 0 timestamp_en r/w 0 when set, the transport layer transmits the timestamp signal on the lsb of the output samples. timestamp_en has priority over cal_state_en. tmstp_recv_en must also be set high when using timestamp. the latency of the timestamp signal (through the entire device) matches the latency of the analog adc inputs. the control bit enabled by this register is never advertised in the ila (the cs field is 0 in the ila).
93 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.8 jesd204b registers (0x200 to 0x20f) table 90. jesd204b registers address reset acronym register name section 0x200 0x01 jesd_en jesd204b enable register jesd204b enable register (address = 0x200) [reset = 0x01] 0x201 0x02 jmode jesd204b mode register jesd204b mode register (address = 0x201) [reset = 0x02] 0x202 0x1f km1 jesd204b k parameter register jesd204b k parameter register (address = 0x202) [reset = 0x1f] 0x203 0x01 jsync_n jesd204b manual sync request register jesd204b manual sync request register (address = 0x203) [reset = 0x01] 0x204 0x02 jctrl jesd204b control register jesd204b control register (address = 0x204) [reset = 0x02] 0x205 0x00 jtest jesd204b test pattern control register jesd204b test pattern control register (address = 0x205) [reset = 0x00] 0x206 0x00 did jesd204b did parameter register jesd204b did parameter register (address = 0x206) [reset = 0x00] 0x207 0x00 fchar jesd204b frame character register jesd204b frame character register (address = 0x207) [reset = 0x00] 0x208 undefined jesd_status jesd204b, system status register jesd204b, system status register (address = 0x208) [reset = undefined] 0x209 0x00 pd_ch jesd204b channel power-down jesd204b channel power-down register (address = 0x209) [reset = 0x00] 0x20a 0x00 jextra_a jesd204b extra lane enable (link a) jesd204b extra lane enable (link a) register (address = 0x20a) [reset = 0x00] 0x20b 0x00 jextra_b jesd204b extra lane enable (link b) jesd204b extra lane enable (link b) register (address = 0x20b) [reset = 0x00] 0x20c-0x210 undefined reserved reserved ? 7.6.1.8.1 jesd204b enable register (address = 0x200) [reset = 0x01] figure 131. jesd204b enable register (jesd_en) 7 6 5 4 3 2 1 0 reserved jesd_en r/w-0000 000 r/w-1 table 91. jesd_en field descriptions bit field type reset description 7-1 reserved r/w 0000 000 reserved 0 jesd_en r/w 1 0 : disables jesd204b interface 1 : enables jesd204b interface before altering other jesd204b registers, jesd_en must be cleared. when jesd_en is 0, the block is held in reset and the serializers are powered down. the clocks are gated off to save power. the lmfc counter is also held in reset, so sysref does not align the lmfc. always set cal_en before setting jesd_en. always clear jesd_en before clearing cal_en.
94 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.8.2 jesd204b mode register (address = 0x201) [reset = 0x02] figure 132. jesd204b mode register (jmode) 7 6 5 4 3 2 1 0 reserved jmode r/w-000 r/w-0001 0 table 92. jmode field descriptions bit field type reset description 7-5 reserved r/w 000 reserved 4-0 jmode r/w 0001 0 specify the jesd204b output mode. only change this register when jesd_en = 0 and cal_en = 0. 7.6.1.8.3 jesd204b k parameter register (address = 0x202) [reset = 0x1f] figure 133. jesd204b k parameter register (km1) 7 6 5 4 3 2 1 0 reserved km1 r/w-000 r/w-1111 1 table 93. km1 field descriptions bit field type reset description 7-5 reserved r/w 000 reserved 4-0 km1 r/w 1111 1 k is the number of frames per multiframe and this register must be programmed as k-1. depending on the jmode setting, there are constraints on the legal values of k. (default: km1 = 31, k = 32). only change this register when jesd_en is 0. 7.6.1.8.4 jesd204b manual sync request register (address = 0x203) [reset = 0x01] figure 134. jesd204b manual sync request register (jsync_n) 7 6 5 4 3 2 1 0 reserved jsync_n r/w-0000 000 r/w-1 table 94. jsync_n field descriptions bit field type reset description 7-1 reserved r/w 0000 000 reserved 0 jsync_n r/w 1 set this bit to 0 to request jesd204b synchronization (equivalent to the syncse pin being asserted). for normal operation, leave this bit set to 1. the jsync_n register can always generate a synchronization request, regardless of the sync_sel register. however, if the selected sync pin is stuck low, the synchronization request cannot be de-asserted unless sync_sel = 2 is programmed.
95 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.8.5 jesd204b control register (address = 0x204) [reset = 0x02] figure 135. jesd204b control register (jctrl) 7 6 5 4 3 2 1 0 reserved sync_sel sformat scr r/w-0000 r/w-00 r/w-1 r/w-0 table 95. jctrl field descriptions bit field type reset description 7-4 reserved r/w 0000 reserved 3-2 sync_sel r/w 00 0: use the syncse input for the sync~ function (default) 1: use the tmstp differential input for the sync~ function; tmstp_recv_en must also be set 2: do not use any sync input signal (use software sync~ through jsync_n) 1 sformat r/w 1 output sample format for jesd204b samples. 0: offset binary 1: signed 2 ? s complement (default) 0 scr r/w 0 0: scrambler disabled (default) 1: scrambler enabled only change this register when jesd_en is 0. 7.6.1.8.6 jesd204b test pattern control register (address = 0x205) [reset = 0x00] figure 136. jesd204b test pattern control register (jtest) 7 6 5 4 3 2 1 0 reserved jtest r/w-0000 r/w-0000 table 96. jtest field descriptions bit field type reset description 7-4 reserved r/w 0000 reserved 3-0 jtest r/w 0000 0: test mode disabled; normal operation (default) 1: prbs7 test mode 2: prbs15 test mode 3: prbs23 test mode 4: ramp test mode 5: transport layer test mode 6: d21.5 test mode 7: k28.5 test mode 8: repeated ila test mode 9: modified rpat test mode 10: serial outputs held low 11: serial outputs held high 12 ? 15: reserved only change this register when jesd_en is 0.
96 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.8.7 jesd204b did parameter register (address = 0x206) [reset = 0x00] figure 137. jesd204b did parameter register (did) 7 6 5 4 3 2 1 0 did r/w-0000 0000 table 97. did field descriptions bit field type reset description 7-0 did r/w 0000 0000 specifies the device id (did) value that is transmitted during the second multiframe of the jesd204b ila. link a transmits did, and link b transmits did+1. bit 0 is ignored and always returns 0 (if an odd number is programmed, that number is decremented to an even number). only change this register when jesd_en is 0. 7.6.1.8.8 jesd204b frame character register (address = 0x207) [reset = 0x00] figure 138. jesd204b frame character register (fchar) 7 6 5 4 3 2 1 0 reserved fchar r/w-0000 00 r/w-00 table 98. fchar field descriptions bit field type reset description 7-2 reserved r/w 0000 00 reserved 1-0 fchar r/w 00 specify which comma character is used to denote end-of-frame. this character is transmitted opportunistically (see the frame and multiframe monitoring section). 0: use k28.7 (default, jesd204b compliant) 1: use k28.1 (not jesd204b compliant) 2: use k28.5 (not jesd204b compliant) 3: reserved when using a jesd204b receiver, always use fchar = 0. when using a general-purpose 8b, 10b receiver, the k28.7 character may cause issues. when k28.7 is combined with certain data characters, a false, misaligned comma character can result, and some receivers realign to the false comma. to avoid this condition, program fchar to 1 or 2. only change this register when jesd_en is 0.
97 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.8.9 jesd204b, system status register (address = 0x208) [reset = undefined] figure 139. jesd204b, system status register (jesd_status) 7 6 5 4 3 2 1 0 reserved link_up sync_status realigned aligned pll_locked reserved r r r r/w r/w r r table 99. jesd_status field descriptions bit field type reset description 7 reserved r undefined reserved 6 link_up r undefined when set, this bit indicates that the jesd204b link is up. 5 sync_status r undefined returns the state of the jesd204b sync~ signal. 0: sync~ asserted 1: sync~ de-asserted 4 realigned r/w undefined when high, this bit indicates that an internal digital clock, frame clock, or multiframe (lmfc) clock phase was realigned by sysref. write a 1 to clear this bit. 3 aligned r/w undefined when high, this bit indicates that the multiframe (lmfc) clock phase has been established by sysref. the first sysref event after enabling the jesd204b encoder will set this bit. write a 1 to clear this bit. 2 pll_locked r undefined when high, this bit indicates that the pll is locked. 1-0 reserved r undefined reserved 7.6.1.8.10 jesd204b channel power-down register (address = 0x209) [reset = 0x00] figure 140. jesd204b channel power-down register (pd_ch) 7 6 5 4 3 2 1 0 reserved pd_bch pd_ach r/w-0000 00 r/w-0 r/w-0 table 100. pd_ch field descriptions bit field type reset description 7-2 reserved r/w 0000 00 reserved 1 pd_bch r/w 0 when set, the b adc channel is powered down. the adc channel b serdes lanes are also powered down when pd_bch is set. important notes: set jesd_en = 0 before changing pd_ch. to power-down both adc channels, use mode. if both channels are powered down, then the entire jesd204b subsystem (including the pll and lmfc) are powered down if the selected jesd204b mode transmits a and b data on link a, and the b digital channel is disabled, link a remains operational, but the b-channel samples are undefined. 0 pd_ach r/w 0 when set, the a adc channel is powered down. the adc channel a serdes lanes are also powered down when pd_ach is set. important notes: set jesd_en = 0 before changing pd_ch. to power-down both adc channels, use mode. if both channels are powered down, then the entire jesd204b subsystem (including the pll and lmfc) are powered down if the selected jesd204b mode transmits a and b data on link a, and the b digital channel is disabled, link a remains operational, but the b-channel samples are undefined.
98 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.8.11 jesd204b extra lane enable (link a) register (address = 0x20a) [reset = 0x00] figure 141. jesd204b extra lane enable (link a) register (jextra_a) 7 6 5 4 3 2 1 0 extra_lane_a extra_ser_a r/w-0000 000 r/w-0 table 101. jesd204b extra lane enable (link a) field descriptions bit field type reset description 7-1 extra_lane_a r/w 0000 000 program these register bits to enable extra lanes (even if the selected jmode does not require the lanes to be enabled). extra_lane_a(n) enables an (n = 1 to 7). this register enables the link layer clocks for the affected lanes. to also enable the extra serializes set extra_ser_a = 1. 0 extra_ser_a r/w 0 0: only the link layer clocks for extra lanes are enabled. 1: serializers for extra lanes are also enabled. use this mode to transmit data from the extra lanes. important notes: only change this register when jesd_en = 0. the bit-rate and mode of the extra lanes are set by the jmode and jtest parameters. this register does not override the pd_ch register, so ensure that the link is enabled to use this feature. to enable serializer n, the lower number lanes 0 to n-1 must also be enabled, otherwise serializer n does not receive a clock. 7.6.1.8.12 jesd204b extra lane enable (link b) register (address = 0x20b) [reset = 0x00] figure 142. jesd204b extra lane enable (link b) register (jextra_b) 7 6 5 4 3 2 1 0 extra_lane_b extra_ser_b r/w-0000 000 r/w-0 table 102. jesd204b extra lane enable (link b) field descriptions bit field type reset description 7-1 extra_lane_b r/w 0000 000 program these register bits to enable extra lanes (even if the selected jmode does not require the lanes to be enabled). extra_lane_b(n) enables bn (n = 1 to 7). this register enables the link layer clocks for the affected lanes. to also enable the extra serializes set extra_ser_b = 1. 0 extra_ser_b r/w 0 0: only the link layer clocks for extra lanes are enabled. 1: serializers for extra lanes are also enabled. use this mode to transmit data from the extra lanes. important notes: only change this register when jesd_en = 0. the bit-rate and mode of the extra lanes are set by the jmode and jtest parameters. this register does not override the pd_ch register, so ensure that the link is enabled to use this feature. to enable serializer n, the lower number lanes 0 to n-1 must also be enabled, otherwise serializer n does not receive a clock.
99 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.9 digital down converter registers (0x210-0x2af) table 103. overrange registers address reset acronym register name section 0x211 0xf2 ovr_t0 overrange threshold 0 register overrange threshold 0 register (address = 0x211) [reset = 0xf2] 0x212 0xab ovr_t1 overrange threshold 1 register overrange threshold 1 register (address = 0x212) [reset = 0xab] 0x213 0x07 ovr_cfg overrange configuration register overrange configuration register (address = 0x213) [reset = 0x07] 0x214-0x296 undefined reserved reserved ? 0x297 undefined spin_id spin identification value spin identification register (address = 0x297) [reset = undefined] 0x298-0x2af undefined reserved reserved ? 7.6.1.9.1 overrange threshold 0 register (address = 0x211) [reset = 0xf2] figure 143. overrange threshold 0 register (ovr_t0) 7 6 5 4 3 2 1 0 ovr_t0 r/w-1111 0010 table 104. ovr_t0 field descriptions bit field type reset description 7-0 ovr_t0 r/w 1111 0010 overrange threshold 0. this parameter defines the absolute sample level that causes control bit 0 to be set. the detection level in dbfs (peak) is: 20 log10 (ovr_t0 / 256) default: 0xf2 = 242 ? 0.5 dbfs.
100 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.1.9.2 overrange threshold 1 register (address = 0x212) [reset = 0xab] figure 144. overrange threshold 1 register (ovr_t1) 7 6 5 4 3 2 1 0 ovr_t1 r/w-1010 1011 table 105. ovr_t1 field descriptions bit field type reset description 7-0 ovr_t1 r/w 1010 1011 overrange threshold 1. this parameter defines the absolute sample level that causes control bit 1 to be set. the detection level in dbfs (peak) is: 20 log10 (ovr_t1 / 256) default: 0xab = 171 ? 3.5 dbfs. 7.6.1.9.3 overrange configuration register (address = 0x213) [reset = 0x07] figure 145. overrange configuration register (ovr_cfg) 7 6 5 4 3 2 1 0 reserved ovr_en ovr_n r/w-0000 r/w-0 r/w-111 (1) changing the ovr_n setting while jesd_en=1 may cause the phase of the monitoring period to change. table 106. ovr_cfg field descriptions bit field type reset description 7-4 reserved r/w 0000 0 reserved 3 ovr_en r/w 0 enables overrange status output pins when set high. the ora0, ora1, orb0, and orb1 outputs are held low when ovr_en is set low. this register only effects the overrange output pins (orxx) and not the overrange status embedded in the data samples. 2-0 ovr_n (1) r/w 111 program this register to adjust the pulse extension for the ora0, ora1 and orb0, orb1 outputs. the minimum pulse duration of the overrange outputs is 8 2 ovr_n devclk cycles. incrementing this field doubles the monitoring period. 7.6.1.10 spin identification register (address = 0x297) [reset = undefined] figure 146. spin identification register (spin_id) 7 6 5 4 3 2 1 0 reserved spin_id r-000 r table 107. spin_id field descriptions bit field type reset description 7-5 reserved r 000 reserved 4-0 spin_id r 2 spin identification value. 2 : ADC08DJ3200
101 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.2 sysref calibration registers (0x2b0 to 0x2bf) table 108. sysref calibration registers address reset acronym register name section 0x2b0 0x00 src_en sysref calibration enable register sysref calibration enable register (address = 0x2b0) [reset = 0x00] 0x2b1 0x05 src_cfg sysref calibration configuration register sysref calibration configuration register (address = 0x2b1) [reset = 0x05] 0x2b2-0x2b4 undefined src_status sysref calibration status sysref calibration status register (address = 0x2b2 to 0x2b4) [reset = undefined] 0x2b5-0x2b7 0x00 tad devclk aperture delay adjustment register devclk aperture delay adjustment register (address = 0x2b5 to 0x2b7) [reset = 0x000000] 0x2b8 0x00 tad_ramp devclk timing adjust ramp control register devclk timing adjust ramp control register (address = 0x2b8) [reset = 0x00] 0x2b9-0x2bf undefined reserved reserved ? 7.6.2.1 sysref calibration enable register (address = 0x2b0) [reset = 0x00] figure 147. sysref calibration enable register (src_en) 7 6 5 4 3 2 1 0 reserved src_en r/w-0000 000 r/w-0 table 109. src_en field descriptions bit field type reset description 7-1 reserved r/w 0000 000 reserved 0 src_en r/w 0 0: sysref calibration disabled; use the tad register to manually control the tad[16:0] output and adjust the devclk delay (default) 1: sysref calibration enabled; the devclk delay is automatically calibrated; the tad register is ignored a 0-to-1 transition on src_en starts the sysref calibration sequence. program src_cfg before setting src_en. ensure that adc calibration is not currently running before setting src_en.
102 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.2.2 sysref calibration configuration register (address = 0x2b1) [reset = 0x05] figure 148. sysref calibration configuration register (src_cfg) 7 6 5 4 3 2 1 0 reserved src_avg src_hdur r/w-0000 r/w-01 r/w-01 table 110. src_cfg field descriptions bit field type reset description 7-4 reserved r/w 0000 00 reserved 3-2 src_avg r/w 01 specifies the amount of averaging used for sysref calibration. larger values increase calibration time and reduce the variance of the calibrated value. 0: 4 averages 1: 16 averages 2: 64 averages 3: 256 averages 1-0 src_hdur r/w 01 specifies the duration of each high-speed accumulation for sysref calibration. if the sysref period exceeds the supported value, the calibration fails. larger values increase calibration time and support longer sysref periods. for a given sysref period, larger values also reduce the variance of the calibrated value. 0: 4 cycles per accumulation, max sysref period of 85 devclk cycles 1: 16 cycles per accumulation, max sysref period of 1100 devclk cycles 2: 64 cycles per accumulation, max sysref period of 5200 devclk cycles 3: 256 cycles per accumulation, max sysref period of 21580 devclk cycles max duration of sysref calibration is bounded by: t sysrefcal (in devclk cycles) = 256 19 4 (src_avg + src_hdur + 2) 7.6.2.3 sysref calibration status register (address = 0x2b2 to 0x2b4) [reset = undefined] figure 149. sysref calibration status register (src_status) 23 22 21 20 19 18 17 16 reserved src_done src_tad[16] r r r 15 14 13 12 11 10 9 8 src_tad[15:8] r 7 6 5 4 3 2 1 0 src_tad[7:0] r table 111. src_status field descriptions bit field type reset description 23-18 reserved r undefined reserved 17 src_done r undefined this bit returns a 1 when src_en = 1 and sysref calibration is complete. 16-0 src_tad r undefined this field returns the value for tad[16:0] computed by the sysref calibration. this field is only valid if src_done = 1.
103 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.2.4 devclk aperture delay adjustment register (address = 0x2b5 to 0x2b7) [reset = 0x000000] figure 150. devclk aperture delay adjustment register (tad) 23 22 21 20 19 18 17 16 reserved tad_inv r/w-0000 000 r/w-0 15 14 13 12 11 10 9 8 tad_coarse r/w-0000 0000 7 6 5 4 3 2 1 0 tad_fine r/w-0000 0000 table 112. tad field descriptions bit field type reset description 23-17 reserved r/w 0000 000 reserved 16 tad_inv r/w 0 invert devclk by setting this bit equal to 1. 15-8 tad_coarse r/w 0000 0000 this register controls the devclk aperture delay adjustment when src_en = 0. use this register to manually control the devclk aperture delay when sysref calibration is disabled. if adc calibration or jesd204b is running, ti recommends gradually increasing or decreasing this value (1 code at a time) to avoid clock glitches. see the switching characteristics table for tad_coarse resolution. 7-0 tad_fine r/w 0000 0000 see the switching characteristics table for tad_fine resolution. 7.6.2.5 devclk timing adjust ramp control register (address = 0x2b8) [reset = 0x00] figure 151. devclk timing adjust ramp control register (tad_ramp) 7 6 5 4 3 2 1 0 reserved tad_ramp_rate tad_ramp_en r/w-0000 00 r/w-0 r/w-0 table 113. tad_ramp field descriptions bit field type reset description 7-2 reserved r/w 0000 00 reserved 1 tad_ramp_rate r/w 0 specifies the ramp rate for the tad[15:8] output when the tad[15:8] register is written when tad_ramp_en = 1. 0: tad[15:8] ramps up or down one code per 256 devclk cycles. 1: tad[15:8] ramps up or down 4 codes per 256 devclk cycles. 0 tad_ramp_en r/w 0 tad ramp enable. set this bit if coarse tad adjustments are desired to ramp up or down instead of changing abruptly. 0: after writing the tad[15:8] register the aperture delay is updated within 1024 devclk cycles 1: after writing the tad[15:8] register the aperture delay ramps up or down until the aperture delay matches the tad[15:8] register
104 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.3 alarm registers (0x2c0 to 0x2c2) table 114. alarm registers address reset acronym register name section 0x2c0 undefined alarm alarm interrupt status register alarm interrupt register (address = 0x2c0) [reset = undefined] 0x2c1 0x1f alm_status alarm status register alarm status register (address = 0x2c1) [reset = 0x1f] 0x2c2 0x1f alm_mask alarm mask register alarm mask register (address = 0x2c2) [reset = 0x1f] 7.6.3.1 alarm interrupt register (address = 0x2c0) [reset = undefined] figure 152. alarm interrupt register (alarm) 7 6 5 4 3 2 1 0 reserved alarm r r table 115. alarm field descriptions bit field type reset description 7-1 reserved r undefined reserved 0 alarm r undefined this bit returns a 1 whenever any alarm occurs that is unmasked in the alm_status register. use alm_mask to mask (disable) individual alarms. cal_status_sel can be used to drive the alarm bit onto the calstat output pin to provide a hardware alarm interrupt signal. 7.6.3.2 alarm status register (address = 0x2c1) [reset = 0x1f] figure 153. alarm status register (alm_status) 7 6 5 4 3 2 1 0 reserved pll_alm link_alm realigned_alm reserved clk_alm r/w-000 r/w-1 r/w-1 r/w-1 r/w-1 r/w-1 table 116. alm_status field descriptions bit field type reset description 7-5 reserved r/w 000 reserved 4 pll_alm r/w 1 pll lock lost alarm. this bit is set whenever the pll is not locked. write a 1 to clear this bit. 3 link_alm r/w 1 link alarm. this bit is set whenever the jesd204b link is enabled, but is not in the data_enc state. write a 1 to clear this bit. 2 realigned_alm r/w 1 realigned alarm. this bit is set whenever sysref causes the internal clocks (including the lmfc) to be realigned. write a 1 to clear this bit. 1 reserved r/w 1 reserved 0 clk_alm r/w 1 clock alarm. this bit can be used to detect an upset to the digital block and jesd204b clocks. this bit is set whenever the internal clock dividers for the a and b channels do not match. write a 1 to clear this bit.
105 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 7.6.3.3 alarm mask register (address = 0x2c2) [reset = 0x1f] figure 154. alarm mask register (alm_mask) 7 6 5 4 3 2 1 0 reserved mask_pll_alm mask_link_alm mask_realigned_ alm mask_nco_alm mask_clk_alm r/w-000 r/w-1 r/w-1 r/w-1 r/w-1 r/w-1 table 117. alm_mask field descriptions bit field type reset description 7-5 reserved r/w 000 reserved 4 mask_pll_alm r/w 1 when set, pll_alm is masked and does not impact the alarm register bit. 3 mask_link_alm r/w 1 when set, link_alm is masked and does not impact the alarm register bit. 2 mask_realigned_alm r/w 1 when set, realigned_alm is masked and does not impact the alarm register bit. 1 mask_nco_alm r/w 1 when set, nco_alm is masked and does not impact the alarm register bit. 0 mask_clk_alm r/w 1 when set, clk_alm is masked and does not impact the alarm register bit.
106 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 8 application and implementation note information in the following applications sections is not part of the ti component specification, and ti does not warrant its accuracy or completeness. ti ? s customers are responsible for determining suitability of components for their purposes. customers should validate and test their design implementation to confirm system functionality. 8.1 application information the ADC08DJ3200 can be used in a wide range of applications including radar, satellite communications, test equipment (communications testers and oscilloscopes), and software-defined radios (sdrs). the wide input bandwidth enables direct rf sampling to at least 8 ghz and the high sampling rate allows signal bandwidths of greater than 2 ghz. the typical applications section describes one configuration that meets the needs of a number of these applications. 8.2 typical applications 8.2.1 wideband rf sampling receiver figure 155. typical configuration for wideband rf sampling 8.2.1.1 design requirements 8.2.1.1.1 input signal path use appropriate band-limiting filters to reject unwanted frequencies in the input signal path. a 1:2 balun transformer is needed to convert the 50- , single-ended signal to 100- differential for input to the adc. the balun outputs can be either ac-coupled, or directly connected to the adc differential inputs, which are terminated internally to gnd. clocking subsystem user control logic fpga or asic up to 16 lanes jesd204b sync~ device clock sysref device clock sysref spi r n pfd 10-mhz reference lmk04832 antialias bpf copyright ? 2018, texas instruments incorporated lna lna antialias bpf lna lna ddc adc a adc b jesd 204b jesd 204b ddc
107 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated typical applications (continued) (1) see the third-party products disclaimer section. drivers must be selected to provide any needed signal gain and that have the necessary bandwidth capabilities. baluns must be selected to cover the needed frequency range, have a 1:2 impedance ratio, and have acceptable gain and phase balance over the frequency range of interest. table 118 lists a number of recommended baluns for different frequency ranges. table 118. recommended baluns part number manufacturer (1) minimum frequency (mhz) maximum frequency (mhz) bal-0009smg marki microwave 0.5 9000 bal-0208smg marki microwave 2000 8000 tcm2-43x+ mini-circuits 10 4000 tcm2-33wx+ mini-circuits 10 3000 b0430j50100ahf anaren 400 3000 8.2.1.1.2 clocking the ADC08DJ3200 clock inputs must be ac-coupled to the device to ensure rated performance. the clock source must have extremely low jitter (integrated phase noise) to enable rated performance. recommended clock synthesizers include the lmx2594 , lmx2592 , and lmx2582 . the jesd204b data converter system (adc plus fpga) requires additional sysref and device clocks. the lmk04828 , lmk04826 , and lmk04821 devices are suitable to generate these clocks. depending on the adc clock frequency and jitter requirements, this device may also be used as the system clock synthesizer or as a device clock and sysref distribution device when multiple ADC08DJ3200 devices are used in a system. 8.2.1.2 detailed design procedure certain component values used in conjunction with the ADC08DJ3200 must be calculated based on system parameters. those items are covered in this section. 8.2.1.2.1 calculating values of ac-coupling capacitors ac-coupling capacitors are used in the input clk and jesd204b output data pairs. the capacitor values must be large enough to address the lowest frequency signals of interest, but not so large as to cause excessively long startup biasing times, or unwanted parasitic inductance. the minimum capacitor value can be calculated based on the lowest frequency signal that is transferred through the capacitor. given a 50- single-ended clock or data path impedance, good practice is to set the capacitor impedance to be < 1 at the lowest frequency of interest. this setting ensures minimal impact on signal level at that frequency. for the clk path, the minimum-rated clock frequency is 800 mhz. therefore, the minimum capacitor value can be calculated from: (4) setting z c = 1 and rearranging gives: (5) therefore, a capacitance value of at least 199 pf is needed to provide the low-frequency response for the clk path. if the minimum clock frequency is higher than 800 mhz, this calculation can be revisited for that frequency. similar calculations can be done for the jesd204b output data capacitors based on the minimum frequency in that interface. capacitors must also be selected for good response at high frequencies, and with dimensions that match the high-frequency signal traces they are connected to. capacitors of the 0201 size are frequently well suited to these applications. ( ) l c c k z 1/ 2 c = p | ( ) c 1/ 2 800 mhz 1 = 1 pf 99 = p w
108 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 8.2.1.3 application curves the ADC08DJ3200 can be used in a number of different operating modes to suit multiple applications. figure 156 to figure 157 describe operation with a 497.77-mhz input signal in the following configurations: ? 6.4-gsps, single-input mode, jmode5 ? 6.4-gsps, dual-input mode, jmode7 figure 156. fft for 497.77-mhz input signal, 6.4 gsps, jmode5 figure 157. fft for 497.77-mhz input signal, 3.2 gsps, jmode7 8.2.2 reconfigurable dual-channel 2.5-gsps or single-channel 5.0-gsps oscilloscope this section demonstrates the use of the ADC08DJ3200 in a reconfigurable oscilloscope. the oscilloscope can operate as a dual-channel oscilloscope running at 2.5 gsps or can be reconfigured through spi programming as a single-channel, 5-gsps oscilloscope. this reconfigurable setup allows users to trade off the number of channels and the sampling rate of the oscilloscope as needed without changing the hardware. set the input bandwidth to the desired maximum signal bandwidth through the use of an antialiasing, low-pass filter. digital filtering can then be used to reconfigure the analog bandwidth as required. for instance, the maximum bandwidth can be set to 1 ghz for use during pulsed transient detection and then reconfigured to 100 mhz through digital filtering for low-noise, sine-wave observation. figure 158 shows the application block diagram. figure 158. typical configuration for reconfigurable oscilloscope adc a adc b clocking subsystem user control logic jesd 204b jesd 204b fpga or asic up to 16 lanes jesd204b sync~ device clock sysref device clock sysref spi r n pfd 10-mhz reference lmh6401 lmh5401 lmk04832 dac8560 dac opa703 lmh6559 antialias lpf lmh6401 lmh5401 dac8560 dac opa703 lmh6559 dc offset adjustment dc offset adjustment antialias lpf front panel channel a programmable termination front panel channel b programmable termination copyright ? 2018, texas instruments incorporated
109 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 8.2.2.1 design requirements 8.2.2.1.1 input signal path most oscilloscopes are required to be dc-coupled in order to monitor dc or low-frequency signals. this requirement forces the design to use dc-coupled, fully differential amplifiers to convert from single-ended signaling at the front panel to differential signaling at the adc. this design uses two differential amplifiers. the first amplifier shown in figure 158 is the lmh5401 that converts from single-ended to differential signaling. the lmh5401 interfaces with the front panel through a programmable termination network and has an offset adjustment input. the amplifier has an 8-ghz, gain-bandwidth product that is sufficient to support a 1-ghz bandwidth oscilloscope. a second amplifier, the lmh6401 , comes after the lmh5401 to provide a digitally programmable gain control for the oscilloscope. the lmh6401 supports a gain range from ? 6 db to 26 db in 1- db steps. if gain control is not necessary or is performed in a different location in the signal chain, then this amplifier can be replaced with a second lmh5401 for additional fixed gain or omitted altogether. the input of the oscilloscope contains a programmable termination block that is not covered in detail here. this block enables the front-panel input termination to be programmed. for instance, many oscilloscopes allow the termination to be programmed as either 50- or 1-m to meet the needs of various applications. a 75- termination can also be desired to support cable infrastructure use cases. this block can also contain an option for dc blocking to remove the dc component of the external signal and therefore pass only ac signals. a precision dac is used to configure the offset of the oscilloscope front-end to prevent saturation of the analog signal chain for input signals containing large dc offsets. the dac8560 is shown in figure 158 along with signal-conditioning amplifiers opa703 and lmh6559 . the first differential amplifier, lmh5401, is driven by the front panel input circuitry on one input, and the dc offset bias on the second input. the impedance of these driving signals must be matched at dc and over frequency to ensure good even-order harmonic performance in the single-ended to differential conversion operation. the high bandwidth of the lmh6559 allows the device to maintain low impedance over a wide frequency range. an antialiasing, low-pass filter is positioned at the input of the adc to limit the bandwidth of the input signal into the adc. this amplifier also band-limits the front-end noise to prevent aliased noise from degrading the signal-to- noise ratio of the overall system. design this filter for the maximum input signal bandwidth specified by the oscilloscope. the input bandwidth can then be reconfigured through the use of digital filters in the fpga or asic to limit the oscilloscope input bandwidth to a bandwidth less than the maximum. 8.2.2.1.2 clocking the ADC08DJ3200 clock inputs must be ac-coupled to the device to ensure rated performance. the clock source must have extremely low jitter (integrated phase noise) to enable rated performance. recommended clock synthesizers include the lmx2594 , lmx2592 , and lmx2582 . the jesd204b data converter system (adc plus fpga) requires additional sysref and device clocks. the lmk04832 , lmk04828 , lmk04826 , and lmk04821 devices are suitable to generate these clocks. depending on the adc clock frequency and jitter requirements, this device can also be used as the system clock synthesizer or as a device clock and sysref distribution device when multiple ADC08DJ3200 devices are used in a system. 8.2.2.1.3 ADC08DJ3200 the ADC08DJ3200 is ideally suited for oscilloscope applications. the ability to tradeoff channel count and sampling speed allows designers to build flexible hardware to meet multiple needs. this flexibility saves development time and cost, allows hardware reuse for various projects and enables software upgrade paths for additional functionality. the low code-error rate eliminates concerns about undesired time domain glitches or sparkle codes. this rate makes the ADC08DJ3200 a perfect fit for long-duration transient detection measurements and reduces the probability of false triggers. the input common-mode voltage of 0 v allows the driving amplifiers to use equal split power supplies that center the amplifier output common-mode voltage at 0 v and eliminates the need for common-mode voltage shifting before the adc inputs. the high input bandwidth of the ADC08DJ3200 simplifies the design of the driving amplifier circuit and antialiasing, low-pass filter. the use of dual-edge sampling (des) in single-channel mode eliminates the need to change the clock frequency when switching between dual- and single-channel modes and simplifies synchronization by relaxing the setup and hold timing requirements of sysref. the t ad adjust circuit allows the user to time-align the sampling instances of multiple ADC08DJ3200 devices.
110 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 8.2.2.2 application curves the following application curves demonstrate performance and results only of the adc. the amplifier front-end is not included in these measurements. the following configurations and measurements are shown in figure 159 to figure 165 : ? 8-bit, 5-gsps, single-channel oscilloscope using jmode4 ( 4 lanes at 12.5 gbps) ? idle-channel noise (no input) ? 40-mhz, square-wave time domain ? 200-mhz, sine-wave time domain ? 200-mhz, sine-wave frequency domain (fft) ? 8-bit, 2.5-gsps, dual-channel oscilloscope using jmode6 ( 4 lanes at 12.5 gbps) ? idle-channel noise (no input) ? 40-mhz, square-wave (channel b) and 200-mhz, sine-wave (channel a) time domain ? 40-mhz, square-wave (channel b) time domain and 200-mhz, sine-wave (channel a) frequency domain (fft) figure 159. idle-channel noise (no input) for 5-gsps, single-channel oscilloscope figure 160. 40-mhz, square-wave time domain for 5- gsps, single-channel oscilloscope figure 161. 200-mhz, sine-wave time domain for 5-gsps, single-channel oscilloscope figure 162. 200-mhz, sine-wave frequency domain (fft) for 5-gsps, single-channel oscilloscope
111 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated figure 163. idle-channel noise (no input) for 2.5-gsps, dual-channel oscilloscope figure 164. 200-mhz, sine-wave (channel a) and 40-mhz, square-wave (channel b) time domain for 5-gsps, single-channel oscilloscope figure 165. 200-mhz, sine-wave (channel a) frequency domain (fft) and 40-mhz, square-wave (channel b) time domain for 5-gsps, single-channel oscilloscope
112 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 8.3 initialization set up the device and jesd204 interface require a specific startup and alignment sequence. the general order of that sequence is listed in the following steps. 1. power-up or reset the device. 2. apply a stable device clk signal at the desired frequency. 3. program jesd_en = 0 to stop the jesd204b state machine and allow setting changes. 4. program cal_en = 0 to stop the calibration state machine and allow setting changes. 5. program the desired jmode. 6. program the desired km1 value. km1 = k ? 1. 7. program sync_sel as needed. choose syncse or timestamp differential inputs. 8. configure device calibration settings as desired. select foreground or background calibration modes and offset calibration as needed. 9. program cal_en = 1 to enable the calibration state machine. 10. enable overrange via ovr_en and adjust settings if desired. 11. program jesd_en = 1 to re-start the jesd204b state machine and allow the link to restart. 12. the jesd204b interface operates in response to the applied sync signal from the receiver. 13. program cal_soft_trig = 0. 14. program cal_soft_trig = 1 to initiate a calibration. 9 power supply recommendations the device requires two different power-supply voltages. 1.9 v dc is required for the va19 power bus and 1.1 v dc is required for the va11 and vd11 power buses. the power-supply voltages must be low noise and provide the needed current to achieve rated device performance. there are two recommended power supply architectures: 1. step down using high-efficiency switching converters, followed by a second stage of regulation to provide switching noise reduction and improved voltage accuracy. 2. directly step down the final adc supply voltage using high-efficiency switching converters. this approach provides the best efficiency, but care must be taken to ensure switching noise is minimized to prevent degraded adc performance. ti webench ? power designer can be used to select and design the individual power supply elements needed: see the webench ? power designer recommended switching regulators for the first stage include the tps62085 , tps82130 , tps62130a , and similar devices. recommended low drop-out (ldo) linear regulators include the tps7a7200 , tps74401 , and similar devices. for the switcher only approach, the ripple filter must be designed with a notch frequency that aligns with the switching ripple frequency of the dc-dc converter. make a note of the switching frequency reported from webench ? and design the emi filter and capacitor combination to have the notch frequency centered as needed. figure 166 and figure 167 illustrate the two approaches.
113 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated note: fb = ferrite bead filter. figure 166. ldo linear regulator approach example note: ripple filter notch frequency to match the fs of the buck converter. note: fb = ferrite bead filter. figure 167. switcher-only approach example ripple filter ripple filter buck 10 f 0.1 f 0.1 f gnd + gnd 5 v - 12 v va19 buck 10 f 0.1 f 0.1 f gnd va11 10 f 0.1 f 0.1 f gnd vd11 fb fb fb copyright ? 2018, texas instruments incorporated 10 f 10 f 10 f gnd fb 10 f 10 f 10 f gnd fb power good 1.9 v 1.1 v buck ldo 47 f 47 f 10 f 0.1 f 0.1 f gnd gnd gnd + gnd 5 v - 12 v 2.2 v va19 buck ldo 47 f 47 f 10 f 0.1 f 0.1 f gnd gnd gnd 1.4 v va11 10 f 0.1 f 0.1 f gnd vd11 1.9 v 1.1 v fb fb fb fb fb power good copyright ? 2018, texas instruments incorporated
114 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 9.1 power sequencing the voltage regulators must be sequenced using the power-good outputs and enable inputs to ensure that the vx11 regulator is enabled after the va19 supply is good. similarly, as soon as the va19 supply drops out of regulation on power-down, the vx11 regulator is disabled. the general requirement for the adc is that va19 vx11 during power-up, operation, and power-down. ti also recommends that va11 and vd11 are derived from a common 1.1-v regulator. this recommendation ensures that all 1.1-v blocks are at the same voltage, and no sequencing problems exist between these supplies. also use ferrite bead filters to isolate any noise on the va11 and vd11 buses from affecting each other. 10 layout 10.1 layout guidelines there are many critical signals that require specific care during board design: 1. analog input signals 2. clk and sysref 3. jesd204b data outputs: 1. lower eight pairs operating at up to 12.8 gbit per second 2. upper eight pairs operating at up to 6.4 gbit per second 4. power connections 5. ground connections items 1, 2, and 3 must be routed for excellent signal quality at high frequencies. use the following general practices: 1. route using loosely coupled 100- differential traces. this routing minimizes impact of corners and length- matching serpentines on pair impedance. 2. provide adequate pair-to-pair spacing to minimize crosstalk. 3. provide adequate ground plane pour spacing to minimize coupling with the high-speed traces. 4. use smoothly radiused corners. avoid 45- or 90-degree bends. 5. incorporate ground plane cutouts at component landing pads to avoid impedance discontinuities at these locations. cut-out below the landing pads on one or multiple ground planes to achieve a pad size or stackup height that achieves the needed 50- , single-ended impedance. 6. avoid routing traces near irregularities in the reference ground planes. irregularities include ground plane clearances associated with power and signal vias and through-hole component leads. 7. provide symmetrically located ground tie vias adjacent to any high-speed signal vias. 8. when high-speed signals must transition to another layer using vias, transition as far through the board as possible (top to bottom is best case) to minimize via stubs on top or bottom of the vias. if layer selection is not flexible, use back-drilled or buried, blind vias to eliminate stubs. in addition, ti recommends performing signal quality simulations of the critical signal traces before committing to fabrication. insertion loss, return loss, and time domain reflectometry (tdr) evaluations should be done. the power and ground connections for the device are also very important. these rules must be followed: 1. provide low-resistance connection paths to all power and ground pins. 2. use multiple power layers if necessary to access all pins. 3. avoid narrow isolated paths that increase connection resistance. 4. use a signal, ground, or power circuit board stackup to maximum coupling between the ground and power planes.
115 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 10.2 layout example figure 168 to figure 170 provide examples of the critical traces routed on the device evaluation module (evm). figure 168. top layer routing: analog inputs, clk and sysref, da0-3, db0-3
116 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated layout example (continued) figure 169. gnd1 cutouts to optimize impedance of component pads
117 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated layout example (continued) figure 170. bottom layer routing: additional clk routing, da4-7, db4-7
118 ADC08DJ3200 slvsdr1 ? february 2018 www.ti.com product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 11 device and documentation support 11.1 device support 11.1.1 third-party products disclaimer ti's publication of information regarding third-party products or services does not constitute an endorsement regarding the suitability of such products or services or a warranty, representation or endorsement of such products or services, either alone or in combination with any ti product or service. 11.1.2 development support webench ? power designer 11.2 documentation support 11.2.1 related documentation for related documentation see the following: ? jesd204b multi-device synchronization: breaking down the requirements ? lm95233 dual remote diode and local temperature sensor with smbus interface and trutherm ? technology ? lmx2594 15-ghz wideband pllatinum ? rf synthesizer with phase synchronization and jesd204b support ? lmx2592 high performance, wideband pllatinum ? rf synthesizer with integrated vco ? lmx2582 high performance, wideband pllatinum ? rf synthesizer with integrated vco ? lmk0482x ultra low-noise jesd204b compliant clock jitter cleaner with dual loop plls ? tps6208x 3-a step-down converter with hiccup short-circuit protection in 2 2 qfn package ? tps82130 17-v input 3-a step-down converter microsip ? module with integrated inductor ? tps6213x 3-v to17-v, 3-a step-down converter in 3x3 qfn package ? tps7a7200 2-a, fast-transient, low-dropout voltage regulator ? tps74401 3.0-a, ultra-ldo with programmable soft-start ? direct rf-sampling radar receiver for l-, s-, c-, and x-band using adc12dj3200 reference design ? adc12dj2700 evaluation module user ' s guide ? multi-channel jesd204b 15 ghz clocking reference design for dso, radar and 5g wireless testers ? lmh5401 8-ghz, low-noise, low-power, fully-differential amplifier ? lmh6401 dc to 4.5 ghz, fully-differential, digital variable-gain amplifier ? dac8560 16-bit, ultra-low glitch, voltage output digital-to-analog converter with 2.5-v, 2-ppm/ c internal reference ? opa70x cmos, rail-to-rail, i/o operational amplifiers ? lmh6559 high-speed, closed-loop buffer ? lmk04832 ultra low-noise jesd204b compliant clock jitter cleaner with dual loop plls 11.3 receiving notification of documentation updates to receive notification of documentation updates, navigate to the device product folder on ti.com. in the upper right corner, click on alert me to register and receive a weekly digest of any product information that has changed. for change details, review the revision history included in any revised document.
119 ADC08DJ3200 www.ti.com slvsdr1 ? february 2018 product folder links: ADC08DJ3200 submit documentation feedback copyright ? 2018, texas instruments incorporated 11.4 community resources the following links connect to ti community resources. linked contents are provided "as is" by the respective contributors. they do not constitute ti specifications and do not necessarily reflect ti's views; see ti's terms of use . ti e2e ? online community ti's engineer-to-engineer (e2e) community. created to foster collaboration among engineers. at e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. design support ti's design support quickly find helpful e2e forums along with design support tools and contact information for technical support. 11.5 trademarks e2e is a trademark of texas instruments. webench is a registered trademark of texas instruments. all other trademarks are the property of their respective owners. 11.6 electrostatic discharge caution these devices have limited built-in esd protection. the leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the mos gates. 11.7 glossary slyz022 ? ti glossary . this glossary lists and explains terms, acronyms, and definitions. 12 mechanical, packaging, and orderable information the following pages include mechanical, packaging, and orderable information. this information is the most current data available for the designated devices. this data is subject to change without notice and revision of this document. for browser-based versions of this data sheet, refer to the left-hand navigation.
package option addendum www.ti.com 22-mar-2018 addendum-page 1 packaging information orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish (6) msl peak temp (3) op temp (c) device marking (4/5) samples ADC08DJ3200aav active fcbga aav 144 1 green (rohs & no sb/br) snagcu level-3-260c-168 hr -40 to 85 adc08dj32 ADC08DJ3200aavt active fcbga aav 144 250 green (rohs & no sb/br) snagcu level-3-260c-168 hr -40 to 85 adc08dj32 (1) the marketing status values are defined as follows: active: product device recommended for new designs. lifebuy: ti has announced that the device will be discontinued, and a lifetime-buy period is in effect. nrnd: not recommended for new designs. device is in production to support existing customers, but ti does not recommend using this part in a new design. preview: device has been announced but is not in production. samples may or may not be available. obsolete: ti has discontinued the production of the device. (2) rohs: ti defines "rohs" to mean semiconductor products that are compliant with the current eu rohs requirements for all 10 rohs substances, including the requirement that rohs substance do not exceed 0.1% by weight in homogeneous materials. where designed to be soldered at high temperatures, "rohs" products are suitable for use in specified lead-free processes. ti may reference these types of products as "pb-free". rohs exempt: ti defines "rohs exempt" to mean products that contain lead but are compliant with eu rohs pursuant to a specific eu rohs exemption. green: ti defines "green" to mean the content of chlorine (cl) and bromine (br) based flame retardants meet js709b low halogen requirements of <=1000ppm threshold. antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) msl, peak temp. - the moisture sensitivity level rating according to the jedec industry standard classifications, and peak solder temperature. (4) there may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) multiple device markings will be inside parentheses. only one device marking contained in parentheses and separated by a "~" will appear on a device. if a line is indented then it is a continuation of the previous line and the two combined represent the entire device marking for that device. (6) lead/ball finish - orderable devices may have multiple material finish options. finish options are separated by a vertical ruled line. lead/ball finish values may wrap to two lines if the finish value exceeds the maximum column width. important information and disclaimer: the information provided on this page represents ti's knowledge and belief as of the date that it is provided. ti bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. efforts are underway to better integrate information from third parties. ti has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ti and ti suppliers consider certain information to be proprietary, and thus cas numbers and other limited information may not be available for release. in no event shall ti's liability arising out of such information exceed the total purchase price of the ti part(s) at issue in this document sold by ti to customer on an annual basis.
package option addendum www.ti.com 22-mar-2018 addendum-page 2
tape and reel information *all dimensions are nominal device package type package drawing pins spq reel diameter (mm) reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p1 (mm) w (mm) pin1 quadrant ADC08DJ3200aavt fcbga aav 144 250 180.0 24.4 10.3 10.3 2.5 4.0 24.0 q1 package materials information www.ti.com 9-mar-2018 pack materials-page 1
*all dimensions are nominal device package type package drawing pins spq length (mm) width (mm) height (mm) ADC08DJ3200aavt fcbga aav 144 250 213.0 191.0 55.0 package materials information www.ti.com 9-mar-2018 pack materials-page 2
www.ti.com package outline c 1.94 max typ 0.405 0.325 8.8 typ 8.8 typ 0.8 typ 0.8 typ 144 x 0.51 0.41 (0.68) a 10.15 9.85 b 10.15 9.85 (0.6) typ ( 8) (0.5) (0.6) typ fcbga - 1.94 mm max height aav0144a ball grid array 4219578/a 04/2016 notes: 1. all linear dimensions are in millimeters. any dimensions in parenthesis are for reference only. dimensioning and tolerancing per asme y14.5m. 2. this drawing is subject to change without notice. 3. dimension is measured at the maximum solder ball diameter, parallel to primary datum c. 4. primary datum c and seating plane are defined by the spherical crowns of the solder balls. ball a1 corner seating plane ball typ 0.2 c note 4 m l k j h g f e d c b a 1 2 3 0.15 c a b 0.08 c symm symm 4 note 3 5 6 7 8 9 10 11 12 scale 1.400
www.ti.com example board layout 144 x ( ) 0.4 (0.8) typ (0.8) typ ( ) metal 0.4 0.05 max solder mask opening metal under solder mask ( ) solder mask opening 0.4 0.05 min fcbga - 1.94 mm max height aav0144a ball grid array 4219578/a 04/2016 notes: (continued) 5. final dimensions may vary due to manufacturing tolerance considerations and also routing constraints. for more information, see texas instruments literature number spru811 (www.ti.com/lit/spru811). symm symm land pattern example scale:8x 1 a b c d e f g h j k l m 2 3 4 5 6 7 8 9 10 11 12 non-solder mask defined (preferred) solder mask details not to scale solder mask defined
www.ti.com example stencil design (0.8) typ (0.8) typ 144 x ( ) 0.4 fcbga - 1.94 mm max height aav0144a ball grid array 4219578/a 04/2016 notes: (continued) 6. laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. solder paste example based on 0.15 mm thick stencil scale:8x symm symm 1 a b c d e f g h j k l m 2 3 4 5 6 7 8 9 10 11 12
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own risk. designers are solely responsible for compliance with all legal and regulatory requirements in connection with such selection. designer will fully indemnify ti and its representatives against any damages, costs, losses, and/or liabilities arising out of designer ? s non- compliance with the terms and provisions of this notice. mailing address: texas instruments, post office box 655303, dallas, texas 75265 copyright ? 2018, texas instruments incorporated

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