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general description the max2839as direct conversion, zero-if, rf transceiver is designed specifically for 2.3ghz to 2.7ghz 802.16e mimo mobile wimax systems. the device incorpo- rates one transmitter and two receivers, with > 40db iso- lation between each receiver. the max2839as completely integrates all circuitry required to implement the rf transceiver function, providing rf to baseband receive path, and baseband to rf transmit path, vco, frequency synthesizer, crystal oscillator, and base- band/control interface. the device includes a fast-set- tling sigma-delta rf synthesizer with smaller than 40hz frequency steps and a crystal oscillator that allows the use of a low-cost crystal in place of a tcxo. the trans- ceiver ic also integrates circuits for on-chip dc-offset cancellation, i/q error, and carrier leakage detection circuits. an internal transmit to receive loopback mode allows for receiver i/q imbalance calibration. the local oscillator i/q quadrature phase error can be digitally corrected in approximately 0.125 steps. only an rf bandpass filter (bpf), crystal, rf switch, pa, and a small number of passive components are needed to form a complete wireless broadband rf radio solution. the max2839as completely eliminates the need for an external saw filter by implementing on-chip program- mable monolithic filters for both the receiver and trans- mitter, for all 2ghz and 802.16e profiles and wibro. the baseband filters along with the rx and tx signal paths are optimized to meet the stringent noise figure and lin- earity specifications. the device supports up to 2048 fft ofdm and implements programmable channel fil- ters for 3.5mhz to 20mhz rf channel bandwidths. the transceiver requires only 2? tx-rx switching time. the ic is available in a small wafer-level package (wlp) measuring 5.16mm x 3.66mm x 0.5mm. applications 802.16e mobile wimax systems korean wibro systems proprietary wireless broadband systems 802.11g or n wlan with mrc or mimo down link features 2.3ghz to 2.7ghz wideband operation dual receivers for mimo, single transmitter complete rf transceiver, pa driver, and crystal oscillator 3.5db rx noise figure on each receiver with balun -35db rx evm for 64qam signal 0dbm linear ofdm transmit power (64qam) -70dbr tx spectral emission mask -35dbc lo leakage automatic rx dc offset correction monolithic low-noise vco with -39dbc integrated phase noise programmable rx i/q lowpass channel filters programmable tx i/q lowpass anti-aliasing filters sigma-delta fractional-n pll with 28.61hz minimum step size 62db tx gain control range with 1db step size, digitally controlled 95db rx gain control range with 1db step size, digitally controlled 60db analog rssi instantaneous dynamic range 4-wire spi digital interface i/q analog baseband interface digital tx/rx mode control digitally tuned crystal oscillator on-chip digital temperature sensor readout +2.7v to +3.6v transceiver supply low-power shutdown current small wlp package (5.16mm x 3.66mm x 0.5mm) max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver ________________________________________________________________ maxim integrated products 1 19-4588; rev 1; 5/10 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. evaluation kit available wimax is a trademark of the wimax forum. spi is a trademark of motorola, inc. ordering information + denotes a lead(pb)-free/rohs-compliant package. t = tape and reel. bump configuration and typical operating circuit appear at end of data sheet. part temp range pin-package max2839asewo+t -40c to +85c 73 wlp
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 2 _______________________________________________________________________________________ dc electrical characteristics (max2839as evaluation kit. unless otherwise noted, v cc _ = 2.7v to 3.6v, t a = -40? to +85?, rx set to the maximum gain. enable and txrx set according to operating mode. cs = high, sclk = din = low, no input signal at rf inputs, all rf inputs and outputs terminated into 50 ? . 90mv rms differential i and q signals (1mhz) applied to i, q baseband inputs of transmitter in transmit mode, all registers set to recommended settings. typical values are at v cc_ = 2.8v, f lo = 2.5ghz, and t a = +25?.) (note 2) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. parameter conditions min typ max units supply voltage v cc _ 2.7 3.6 v shutdown mode, t a = +25?; all logic inputs equal 0 or v cc 2a clock-out only mode 2.7 3.8 standby mode 33 50 one receiver on 79 101 rx mode both receivers on 120 148 16 qam 116 148 tx mode 64 qam (note 3) 145 183 rx calibration mode, both receivers on 153 200 supply current tx calibration mode 102 145 ma d[9:8] = 00 in a[4:0] = 00100 0.8 1.05 1.35 d[9:8] = 01 in a[4:0] = 00100 1.15 d[9:8] = 10 in a[4:0] = 00100 1.25 rx i/q output common-mode voltage d[9:8] = 11 in a[4:0] = 00100 1.45 v tx baseband input common- mode voltage operating range dc-coupled 0.5 1.2 v tx baseband input bias current source current 10 20 ? logic inputs: txrx, enable, sclk, din, cs , b7:b0, clkout_div, rxhp digital input-voltage high, v ih v cc - 0.4 v digital input-voltage low, v il 0.4 v digital input-current high, i ih -1 +1 ? absolute maximum ratings v cc_ pins to gnd..................................................-0.3v to +3.9v rf inputs: rxina+, rxina-, rxinb+, rxinb- to gnd ............................................ac-coupled only rf outputs: txout+, txout- to gnd.................-0.3v to +3.9v analog inputs: txbbi+, txbbi-, txbbq+, txbbq- to gnd.................................................-0.3v to +3.9v analog input: refclk, xtal1 .........................-0.3v to +3.9v p-p analog outputs: rxbbia+, rxbbia-, rxbbqa+, rxbbqa-, rxbbib+, rxbbib-, rxbbqb+, rxbbqb-, cpout+, cpout-, pabias, rssi to gnd........................-0.3v to +3.9v digital inputs: txrx, cs , sclk, din, b7:b0, clkout_div, rxhp, enable to gnd ............-0.3v to +3.9v digital outputs: dout, clkout ..........................-0.3v to +3.9v bias voltages: vcobyp .......................................-0.3v to +3.9v short-circuit duration on all output pins ...............................10s rf input power: all rxin_ ..............................................+10dbm rf output differential load vswr: all txout .......................6:1 continuous power dissipation (t a = +70?) 73-bump wlp (derate 31.3mw/? above +70?).....2500mw operating temperature range ...........................-40? to +85? junction temperature ......................................................+150? storage temperature range .............................-65? to +160? soldering temperature (reflow) .........................(note 1) +260? note 1: refer to application note 1891: understanding the basics of the wafer-level chip-scale package (wl-csp) available at www.maxim-ic.com . caution! esd sensitive device
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver _______________________________________________________________________________________ 3 parameter conditions min typ max units digital input-current low, i il -1 +1 ? logic outputs: dout, clkout digital output-voltage high, v oh sourcing 100? v cc - 0.4 v digital output-voltage low, v ol sinking 100? 0.4 v dc electrical characteristics (continued) (max2839as evaluation kit. unless otherwise noted, v cc _ = 2.7v to 3.6v, t a = -40? to +85?, rx set to the maximum gain. enable and txrx set according to operating mode. cs = high, sclk = din = low, no input signal at rf inputs, all rf inputs and outputs terminated into 50 ? . 90mv rms differential i and q signals (1mhz) applied to i, q baseband inputs of transmitter in transmit mode, all registers set to recommended settings. typical values are at v cc_ = 2.8v, f lo = 2.5ghz, and t a = +25?.) (note 2) parameter conditions min typ max units rf input to i, q baseband-loaded output rf input frequency range 2.3 2.7 ghz peak-to-peak gain variation over rf input frequency range tested at band edges and band center 1.5 db rf input return loss all lna settings 12 db maximum gain, b7:b0 = 0000000 92 99 total voltage gain t a = -40? to +85? minimum gain, b7:b0 = 1111111 4 10 db from max rf gain (b7:b6 = 00) to max rf gain - 8db (b7:b6 = 01) 8 from max rf gain to max rf gain - 16db (b7:b6 = 10) 16 rf gain steps from max rf gain to max rf gain - 32db (b7:b6 = 11) 32 db any rf or baseband gain change; gain settling to within ?db of steady state; rxhp = 1 200 gain change settling time any rf or baseband gain change; gain settling to within ?.1db of steady state; rxhp = 1 2000 ns baseband gain range from maximum baseband gain (b5:b0 = 000000) to minimum gain (b5:b0 = 111111), t a = -40? to +85? 60.5 63 65.5 db baseband gain step size 1db voltage gain = 65db with max rf gain (b7:b6 = 00) 3.5 v ol tag e g ai n = 50d b w i th m ax rf g ai n - 8d b ( b7:b6 = 01) 8.5 voltage gain = 45db with max rf gain - 16db (b7:b6 = 10) 14.5 dsb noise figure (including balun loss) voltage gain = 15db with max rf gain - 32db (b7:b6 = 11) 32 db ac electrical characteristics?x mode (max2839as evaluation kit. unless otherwise noted, v cc_ = 2.8v, t a = +25?, f rf = 2.4999ghz, f lo = 2.5ghz; baseband output signal frequency = 100khz, f ref = 40mhz, enable = txrx = cs = high, sclk = din = low, with power matching for the differential rf pins using the typical operating circuit and registers set to default settings. lowpass filter is set to 10mhz rf channel bw. unmodulated single-tone rf input signal is used.) (note 2)
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 4 _______________________________________________________________________________________ parameter conditions min typ max units agc set for -65dbm wanted signal, max rf gain (b7:b6 = 00) -13 agc set for -55dbm wanted signal, max rf gain - 8db (b7:b6 = 01) -9 agc set for -40dbm wanted signal, max rf gain - 16db (b7:b6 = 10) -7 out-of-band input ip3 (note 4) agc set for -30dbm wanted signal, max rf gain - 32db (b7:b6 = 11) +16 dbm max rf gain (b7:b6 = 00) -37 max rf gain - 8db (b7:b6 = 01) -29 max rf gain - 16db (b7:b6 = 01) -21 inband input p-1db max rf gain - 32db (b7:b6 = 11) -4 dbm maximum output signal level over passband frequency range at vga gain between max and max - 54db; 1db compression point 1.15 v p-p i/q gain imbalance 100khz iq baseband output; 1 variation 0.05 db i/q phase error 100khz iq baseband output; 1 variation 0.25 degrees minimum differential resistance 10 k ? rx i/q output load impedance (r || c) maximum differential capacitance 5 pf loopback gain (for receiver i/q calibration) transmitter i/q input to receiver i/q output; transmitter b6:b1 = 000011, receiver b5:b0 = 101010 programmed through spi -6 -1 +4.5 db i/q output dc droop after switching rxhp to 0; average over 1? after any gain change, or 2? after receive enabled with 100hz ac-coupling 1 v/s i/q static dc offset no rf input signal; measure at 3? after receive enable; rxhp = 1 for 0 to 2? and set to 0 after 2?, 1 variation 1mv isolation between rx channels a and b any rf gain settings 40 db receiver baseband filters at 15mhz 57 at 20mhz 75 baseband filter rejection at > 40mhz 75 db rxhp = 1 (used before agc completion) 650 d[5:4] = 00 0.1 d[5:4] = 01 1 d[5:4] = 10 30 baseband highpass filter corner frequency rxhp = 0 (used after agc completion) address a[4:0] = 01110 d[5:4] = 11 100 khz ac electrical characteristics?x mode (continued) (max2839as evaluation kit. unless otherwise noted, v cc_ = 2.8v, t a = +25?, f rf = 2.4999ghz, f lo = 2.5ghz; baseband output signal frequency = 100khz, f ref = 40mhz, enable = txrx = cs = high, sclk = din = low, with power matching for the differential rf pins using the typical operating circuit and registers set to default settings. lowpass filter is set to 10mhz rf channel bw. unmodulated single-tone rf input signal is used.) (note 2)
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver _______________________________________________________________________________________ 5 parameter conditions min typ max units a[4:0] = 00100 serial bits d[9:6] = 0000 1.75 a[4:0] = 00100 serial bits d[9:6] = 0001 2.25 a[4:0] = 00100 serial bits d[9:6] = 0010 3.5 a[4:0] = 00100 serial bits d[9:6] = 0011 5.0 a[4:0] = 00100 serial bits d[9:6] = 0100 5.5 a[4:0] = 00100 serial bits d[9:6] = 0101 6.0 a[4:0] = 00100 serial bits d[9:6] = 0110 7.0 a[4:0] = 00100 serial bits d[9:6] = 0111 8.0 a[4:0] = 00100 serial bits d[9:6] = 1000 9.0 a[4:0] = 00100 serial bits d[9:6] = 1001 10.0 a[4:0] = 00100 serial bits d[9:6] = 1010 12.0 a[4:0] = 00100 serial bits d[9:6] = 1011 14.0 a[4:0] = 00100 serial bits d[9:6] = 1100 15.0 a[4:0] = 00100 serial bits d[9:6] = 1101 20.0 a[4:0] = 00100 serial bits d[9:6] = 1110 24.0 rf channel bw supported by baseband filter a[4:0] = 00100 serial bits d[9:6] = 1111 28.0 mhz 0 to 2.3mhz for rf bw = 5mhz 1.3 baseband gain ripple 0 to 4.6mhz for rf bw = 10mhz 1.3 db p-p 0 to 2.3mhz for rf bw = 5mhz 90 baseband group delay ripple 0 to 4.6mhz for rf bw = 10mhz 50 ns p-p at 2.3mhz 1.8 baseband filter rejection for 5mhz rf channel bw at > 8.75mhz 75 db at 4.6mhz 1.6 baseband filter rejection for 10mhz rf channel bw at > 17.5mhz 75 db rssi rssi minimum output voltage r load 10k ? 0.6 v rssi maximum output voltage r load 10k ? 2.1 v rssi slope 29 mv/db +32db signal step 200 rssi output settling time to within 3db of steady state -32db signal step 800 ns ac electrical characteristics?x mode (continued) (max2839as evaluation kit. unless otherwise noted, v cc_ = 2.8v, t a = +25?, f rf = 2.4999ghz, f lo = 2.5ghz; baseband output signal frequency = 100khz, f ref = 40mhz, enable = txrx = cs = high, sclk = din = low, with power matching for the differential rf pins using the typical operating circuit and registers set to default settings. lowpass filter is set to 10mhz rf channel bw. unmodulated single-tone rf input signal is used.) (note 2)
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 6 _______________________________________________________________________________________ parameter conditions min typ max units tx baseband i/q inputs to rf outputs rf output frequency range 2.3 2.7 ghz peak-to-peak peak gain variation over rf band 12db total voltage gain max gain - 3db; at unbalanced 50 ? matched output 3.5 8 db max output power over frequency 64 qam ofdm signal conforming to spectral emission mask and -36db evm after i/q imbalance calibration by modem (note 5) 0 dbm rf output return loss 8db rf gain control range b6:b1 = 000000 to 111111 62 db unwanted sideband suppression without calibration by modem, and excludes modem i/q imbalance; p out = 0dbm 40 db b1 1 b2 2 b3 4 b4 8 b5 16 rf gain control binary weights b6 32 db carrier leakage relative to 0dbm output power; without calibration by modem -30 dbc differential resistance 100 k ? tx i/q input impedance (r||c) differential capacitance 0.5 pf 0 to 3.333mhz 0.9 baseband frequency response for 5mhz rf channel bw at > 9.45mhz 43 db 0 to 6.667mhz 0.9 baseband frequency response for 10mhz rf channel bw at > 18.9mhz 43 db 0 to 3.333mhz (rf bw = 5mhz) 20 baseband group delay ripple 0 to 6.667mhz (rf bw = 10mhz) 12 ns ac electrical characteristics?x mode (max2839as evaluation kit. unless otherwise noted, v cc_ = 2.8v, t a = +25?, f rf = 2.501ghz, f lo = 2.5ghz, f ref = 40mhz, enable = cs = high, txrx = sclk = din = low, with power matching for the differential rf pins using the typical operating circuit and registers set to default settings. lowpass filter is set to 10mhz rf channel bw. 1mhz 90mv rms cosine and sine signals applied to i/q baseband inputs of transmitter (differential dc-coupled)). (note 2)
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver _______________________________________________________________________________________ 7 parameter conditions min typ max units rf channel center frequency range 2.3 2.7 ghz channel center frequency programming minimum step size 28.61 hz charge-pump comparison frequency 40 mhz reference frequency range 15 40 80 mhz reference frequency input levels ac-coupled to refclk pin 0.6 v p-p resistance (refclk pin) 10 k ? reference frequency input impedance (r||c) capacitance (refclk pin) 1 pf programmable reference divider values 124 closed-loop integrated phase noise integrate phase noise from 200hz to 5mhz; charge- pump comparison frequency = 40mhz -39 dbc charge-pump output current on each differential side 0.8 ma f offset = 0 to 1.8mhz -40 f offset = 1.8mhz to 7mhz -70 close-in spur level f offset > 7mhz -80 dbc reference spur level -85 dbc turnaround lo frequency error relative to steady state; measured 35? after tx-rx or rx-tx switching instant, and 4? after any receiver gain changes ?0 hz temperature range over which vco maintains lock relative to the ambient temperature t a at initial lock t a ?0 ? clkout_div pin = 0 1 reference output clock divider values clkout_div pin = 1 2 output clock drive level 20mhz output, a[4:0] = 10100, d5 = 0 2.4 v p-p resistance 10 k ? output clock load impedance (r||c) capacitance 2 pf ac electrical characteristics?requency synthesis (max2839as evaluation kit. unless otherwise noted, v cc_ = 2.8v, t a = +25?, f lo = 2.5ghz, f ref = 40mhz, cs = high, sclk = din = low, pll closed-loop unity gain bandwidth = 120khz. vco and rf synthesis enabled.) (note 2)
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 8 _______________________________________________________________________________________ parameter conditions min typ max units pa bias dac: voltage mode output high level 10ma source current v cc - 0.1 v output low level 100? sink current 0.1 v turn-on time excludes programmable delay of 0 to 7? in steps of 0.5? 200 ns crystal oscillator m axi m um cap aci tance, a[ 4:0] = 11000, d [ 6:0] = 1111111 15.5 on-chip tuning capacitance range minimum capacitance, a[4:0] = 11000, d[6:0] = 0000000 0.5 pf on-chip tuning capacitance step size 0.12 pf on-chip temperature sensor t a = +25? 01111 t a = +85? 11101 digital output code readout at dout pin through spi a[4:0] = 01011, d[4:0] t a = -40c 00001 ac electrical characteristics?iscellaneous blocks (max2839as evaluation kit. unless otherwise noted, v cc_ = 2.8v, f ref = 40mhz, cs = high, sclk = din = low, and t a = +25?.) (note parameter symbol conditions min typ max units system timing rx to tx 2 turnaround time measured from tx or rx enable edge; signal settling to within 2db of steady state tx to rx, rxhp = 1 2 ? tx turn-on time (from standby mode) measured from tx-enable edge; signal settling to within 2db of steady state 2s tx turn-off time (to standby mode) from tx-disable edge 0.1 ? rx turn-on time (from standby mode) measured from rx-enable edge; signal settling to within 2db of steady state 2s rx turn-off time (to standby mode) from rx-disable edge 0.1 ? ac electrical characteristics?iming (max2839as evaluation kit. unless otherwise noted, v cc_ = 2.8v, f lo = 2.5ghz, f ref = 40mhz, cs = high, sclk = din = low, pll closed-loop unity gain bandwidth = 120khz, and t a = +25?.) (note 2)
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver _______________________________________________________________________________________ 9 parameter symbol conditions min typ max units 4-wire serial parallel interface timing (see figure 1) sclk rising edge to cs falling edge wait time t cso 6ns falling edge of cs to rising edge of first sclk time t css 6ns din to sclk setup time t ds 6ns din to sclk hold time t dh 6ns sclk pulse-width high t ch 6ns sclk pulse-width low t cl 6ns last rising edge of sclk to rising edge of cs or clock to load enable setup time t csh 6ns cs high pulse width t csw 20 ns time between rising edge of cs and the next rising edge of sclk t cs1 6ns clock frequency f clk 40 mhz rise time t r 0.1/f clk ns fall time t f 0.1/f clk ns sclk falling edge to valid dout t d 12.5 ns ac electrical characteristics?iming (continued) (max2839as evaluation kit. unless otherwise noted, v cc_ = 2.8v, f lo = 2.5ghz, f ref = 40mhz, cs = high, sclk = din = low, pll closed-loop unity gain bandwidth = 120khz, and t a = +25?.) (note 2) note 2: min/max limits are production tested at t a = +85?. min/max limits at t a = -40? and t a = +25? are guaranteed by design and characterization. the power-on default register settings are not production tested. load register setting 10? after v cc is applied. note 3: tx mode supply current is specified for 64 qam while achieving the tx output spectrum mask shown in the typical operating characteristics . the supply current can be reduced for 16 qam signal by adjusting the tx bias settings through the spi. note 4: two tones at +20mhz and +39mhz offset with -35dbm/tone. measure im3 at 1mhz. note 5: gain adjusted over max gain and max gain -3db.
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 10 ______________________________________________________________________________________ typical operating characteristics (v cc_ = 2.8v, t a = +25?, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 ? unbalanced output of balun, using the max2839as evaluation kit.) single rx supply current vs. supply voltage supply voltage (v) supply current (ma) max2839aswo+t toc01 2.7 3.0 3.3 3.6 60 65 70 75 80 85 90 t a = -40 c t a = +25 c t a = +85 c dual rx supply current vs. supply voltage supply voltage (v) supply current (ma) max2839aswo+t toc02 2.7 3.0 3.3 3.6 80 90 100 110 120 130 140 t a = -40 c t a = +25 c t a = +85 c rx noise figure vs. baseband gain setting baseband vga gain code noise figure (db) max2839aswo+t toc03 0 9 18 27 36 45 54 63 0 10 20 30 40 lna = max gain lna = max - 8db lna = max - 16db lna = max - 32db rx gain vs. frequency frequency (ghz) gain (db) max2839aswo+t toc04 2.30 2.50 2.60 2.35 2.55 2.65 2.40 2.45 2.70 60 70 80 90 100 110 lna = max gain lna = max - 8db lna = max - 16db lna = max - 32db rx max gain vs. temperature and frequency frequency (ghz) rx max gain (db) max2939aswo+t toc05 2.3 2.5 2.6 2.4 2.7 94 96 98 100 102 t a = -40 c t a = +25 c t a = +85 c rx voltage gain vs. baseband gain setting baseband vga code voltage gain (db) max2839aswo+t toc06 0 9 18 27 36 45 54 63 0 40 80 120 lna = max lna = max - 8db lna = max - 16db lna = max - 32db rx output v 1db vs. gain setting baseband vga code output v 1db (v rms ) max2839aswo+t toc07 0 9 18 27 36 45 54 63 0 0.4 0.8 1.2 1.6 rx_b to rx_a isolation vs. lna gain setting lna gain setting (db) receiver isolation (db) max2839aswo+t toc08 -35 -25 -15 -5 -30 -20 -10 0 5 38 40 42 44 46 lna = max gain lna = max - 8db lna = max - 16db lna = max - 32db
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver ______________________________________________________________________________________ 11 typical operating characteristics (continued) (v cc_ = 2.8v, t a = +25?, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 ? unbalanced output of balun, using the max2839as evaluation kit.) rx evm vs. p in (channel bandwidth = 10mhz, 64 qam fusc) p in (dbm) evm (%) max2839aswo+t toc09 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 0 2 4 6 8 10 12 14 16 18 20 22 lna = max lna = max - 32db lna = max - 16db lna = max - 8db rx evm vs. v out (channel bandwidth = 10mhz, 64 qam fusc) v out (dbv rms ) evm (%) max2839aswo+t toc10 -30 -26 -22 -18 -14 -10 -6 0 4 8 12 lna = max p in = -50dbm wimax evm vs. ofdm jammer (10mhz channel bandwidth, 64 qam fusc) p wanted = p sensitivity + 3db = -70.3dbm at antenna (including 4db front-end loss), evm at p sensitivity = 6.37%, without jammer p jammer at antenna (dbm) evm (%) max2839aswo+t toc11 -70 -60 -50 -40 -30 -20 0 2 4 6 8 10 12 14 f offset =10mhz f offset = 20mhz 0 26.5 rx emission spectrum at lna input (lna = max gain) max2839aswo+t toc12 frequency (ghz) (dbm) -40 -45 -50 -55 -60 -65 -70 -75 -80 -85 -90 4/3 x lo 4 x lo
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 12 ______________________________________________________________________________________ 54.4 54.6 55.0 54.8 55.2 55.4 55.6 55.8 -130 -120 -125 -110 -115 -105 -100 rxina differential impedance vs. frequency max2839aswo+t toc13 frequency (ghz) real component ( ? ) imaginary component ( ? ) 2.30 2.50 2.40 2.60 2.35 2.55 2.45 2.65 2.70 real imaginary rxinb differential impedance vs. frequency max2839aswo+t toc14 frequency (ghz) real component ( ? ) imagianry component ( ? ) 2.60 2.50 2.40 52.2 52.4 52.6 52.8 53.0 53.2 53.4 53.6 52.0 -125 -120 -115 -110 -105 -100 -130 2.30 2.65 2.55 2.45 2.35 2.70 real imaginary rx input return loss vs. frequency frequency (mhz) rx input return loss (db) max2839aswo+t toc15 2300 2400 2500 2600 2350 2450 2550 2650 2700 -35 -30 -25 -20 -15 -10 -5 0 lna = max gain lna = max - 8db lna = max - 16db lna = max - 32db rssi voltage vs. input power p in (dbm) rssi voltage (v) max2839aswo+t toc16 -110 -80 -50 -20 10 0 0.5 1.0 1.5 2.0 2.5 lna = max lna = max - 8db lna = max - 16db lna = max - 32db rx rssi step response (+32db signal step) max2839aswo+t toc17 200ns/div 3v 0v 1.45v 0.45v lna gain control rssi output rx rssi step response (-32db signal step) max2839aswo+t toc18 200ns/div 3v 0v 1.45v 0.45v lna gain control rssi typical operating characteristics (continued) (v cc_ = 2.8v, t a = +25?, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 ? unbalanced output of balun, using the max2839as evaluation kit.)
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver ______________________________________________________________________________________ 13 rx lpf group delay vs. frequency frequency (mhz) lpf group delay (ns) max2839aswo+t toc19 0246810121416 0 50 100 150 200 250 300 350 channel bw = 5mhz channel bw = 8mhz channel bw = 9mhz channel bw = 10mhz rx dc offset settling response (+8db bb vga gain step) max2839aswo+t toc20 10 s/div 2v/div 0v 0v 5mv/div vga gain control rx dc offset settling response (-8db bb vga gain step) max2839aswo+t toc21 10 s/div 2v/div 0v 0v 5mv/div vga gain control rx dc offset settling response (-16db bb vga gain step) max2839aswo+t toc22 10 s/div 2v/div 0v 0v 5mv/div vga gain control rx dc offset settling response (-32db bb vga gain step) max2839aswo+t toc23 10 s/div 2v/div 0v 0v 5mv/div vga gain control rx bb vga settling response (+8db bb vga gain step) max2839aswo+t toc24 200ns/div 2v/div 0v 1v/div vga gain control rx bb vga settling response (-8db bb vga gain step) max2839aswo+t toc25 200ns/div 2v/div 0v 1v/div vga gain control rx bb vga settling response (-16db bb vga gain step) max2839aswo+t toc26 200ns/div 2v/div 0v 1v/div vga gain control rx bb vga settling response (-32db bb vga gain step) max2839aswo+t toc27 200ns/div 2v/div 0v 1v/div vga gain control typical operating characteristics (continued) (v cc_ = 2.8v, t a = +25?, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 ? unbalanced output of balun, using the max2839as evaluation kit.)
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 14 ______________________________________________________________________________________ rx lna settling response (max to max - 8db) max2839aswo+t toc28 200ns/div 2v/div 0v 1v/div lna gain control rx lna settling response (max to max - 32db) max2839aswo+t toc29 200ns/div 2v/div 0v 1v/div lna gain control rx bb frequency response frequency ( mhz ) response (db) max2839aswo+t toc30 -70 -60 -50 -40 -30 -20 -10 0 10 0.1 1 10 100 channel bw = 1.5mhz channel bw = 5mhz channel bw = 10mhz channel bw = 28mhz typical operating characteristics (continued) (v cc_ = 2.8v, t a = +25?, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 ? unbalanced output of balun, using the max2839as evaluation kit.)
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver ______________________________________________________________________________________ 15 rx bb frequency response frequency (mhz) response (db) max2839aswo+t toc31 -6 -5 -4 -3 -2 -1 0 1 2 0.1 1 10 100 channel bw = 1.5mhz channel bw = 5mhz channel bw = 10mhz channel bw = 28mhz histogram: iq gain imbalance max2839aswo+t toc32 1 /div 316 395 79 237 158 474 mean = 0 dev = 51.8mv sample size = 7839 histogram: rx phase imbalance max2839aswo+t toc33 1 /div 516 645 129 387 258 774 mean = 0 dev = 0.11878 sample size = 7841 histogram: rx static dc offset max2839aswo+t toc34 1 /div 664 830 166 498 332 996 mean = 0 dev = 0.23981mv sample size = 7841 power-on dc offset cancellation with input signal max2839aswo+t toc35 1 s/div 5v/div 0v 200mv/div vga code = -36 lna gain = max i/q output enable power-on dc offset cancellation without input signal max2839aswo+t toc36 1 typical operating characteristics (continued) (v cc_ = 2.8v, t a = +25?, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 ? unbalanced output of balun, using the max2839as evaluation kit.)
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 16 ______________________________________________________________________________________ tx supply current vs. supply voltage supply voltage (v) supply current (ma) max2839aswo+t toc37 2.7 3.0 3.3 3.6 130 134 138 142 146 150 t a = -40 c t a = +25 c t a = +85 c tx baseband frequency response frequency (mhz) response (db) max2839aswo+t toc38 -70 -60 -50 -40 -30 -20 -10 0 10 0.1 1 10 100 channel bw = 1.5mhz channel bw = 5mhz channel bw = 10mhz channel bw = 28mhz tx baseband frequency response frequency (mhz) response (db) max2839aswo+t toc39 -6 -5 -4 -3 -2 -1 0 1 2 0.1 1 10 100 channel bw = 1.5mhz channel bw = 5mhz channel bw = 10mhz channel bw = 28mhz tx output power vs. frequency (tx gain = max - 3db) frequency (mhz) p out (dbm) max2839aswo+t toc40 2300 2350 2400 2450 2500 2550 2600 2650 2700 -4 -3 -2 -1 0 1 2 3 4 t a = -40 c t a = +25 c t a = +85 c tx output power vs. gain setting tx gain code p out (dbm) max2839aswo+t toc41 060 50 30 10 20 40 -70 -50 -30 -10 10 -60 -40 -20 0 t a = -40 c t a = +25 c t a = +85 c 0dbr 10db/div -70dbr 2.495ghz 2.5ghz 2.555ghz tx output spectrum (10mhz channel bandwidth, 16 qam fusc) max2839aswo+t toc42 p out = 0dbm mask 0dbr 10db/div -70dbr 2.495ghz 2.5ghz 2.555ghz tx output spectrum (10mhz channel bandwidth, 64 qam fusc) max2839aswo+t toc43 p out = 0dbm mask tx carrier leakage vs. frequency frequency (mhz) carrier leakage (dbc) max2839aswo+t toc44 2300 2350 2400 2450 2500 2550 2600 2650 2700 -60 -55 -50 -45 -40 -35 -30 tx gain set to max - 3db t a = -40 c t a = +25 c t a = +85 c tx carrier leakage vs. gain setting tx gain code carrier leakage (dbc) max2839aswo+t toc45 0 9 18 27 36 45 54 63 -70 -65 -60 -55 -50 -45 -40 -35 -30 -25 -20 t a = -40 c t a = +25 c t a = +85 c typical operating characteristics (continued) (v cc_ = 2.8v, t a = +25?, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 ? unbalanced output of balun, using the max2839as evaluation kit.)
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver ______________________________________________________________________________________ 17 tx sideband level vs. frequency frequency (mhz) sideband level (dbc) max2839aswo+t toc46 2300 2350 2400 2450 2500 2550 2600 2650 2700 -80 -75 -70 -65 -60 -55 -50 -45 -40 -35 -30 tx gain set to max - 3db t a = -40 c t a = +25 c t a = +85 c tx sideband level vs. gain setting tx gain code sideband level (dbc) max2839aswo+t toc47 0 9 18 27 36 45 54 63 -80 -70 -60 -50 -40 -30 t a = -40 c t a = +25 c t a = +85 c evm vs. tx output power (64 qam fusc, 10mhz channel bandwidth) p out (dbm) evm (%) max2839aswo+t toc48 -50 -40 -30 -20 -10 0 0 0.5 1.0 1.5 2.0 2.5 3.0 26.5 tx output emission spectrum max2839aswo+t toc49 4/3 x lo 5/3 x lo 4 x lo 2 x lo 3 x lo 0 frequency (ghz) (dbm) 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 histogram: tx lo leakage max2839aswo+t toc50 1 /div 248 310 62 186 124 372 mean = -46.235dbc dev = 5.1577db sample size = 7841 histogram: tx sideband suppression max2839aswo+t toc51 1 /div 336 420 84 252 168 504 mean = -47.856dbc dev = 2.8827db sample size = 7841 tx output return loss vs. frequency frequency (mhz) output return loss (db) max2839aswo+t toc52 2300 2400 2500 2600 2700 -16 -14 -12 -10 -8 -6 -4 -2 0 2 4 6.00 3.00 5.00 2.00 4.00 1.00 0 2.30 2.45 2.60 2.35 2.50 2.70 2.40 2.55 2.65 frequency (ghz) tx max output power over frequency max2839aswo+t toc53 64qam ofdm signal conforming to spectral emission mask and -35db evm after i/q imbalance calibration by modem p out (dbm) t a = -40 c t a = +25 c t a = +85 c lo frequency vs. differential tune voltage differential tune voltage (v) lo frequency (ghz) max2839aswo+t toc54 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 typical operating characteristics (continued) (v cc_ = 2.8v, t a = +25?, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 ? unbalanced output of balun, using the max2839as evaluation kit.)
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 18 ______________________________________________________________________________________ -130 -50 -60 -70 -80 -90 -100 phase noise (dbc/hz) -110 -120 -140 -150 0.0001 0.001 0.01 offset frequency (mhz) 0.1 1 10 phase noise vs. offset frequency max2839aswo+t toc55 vco gain vs. differential tune voltage differential tune voltage (v) vco gain (mhz/v) max2839aswo+t toc56 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5 0 20 40 60 80 100khz 20khz/div -100khz 0 time (ms) 1.498 channel-switching frequency settling (2.3ghz to 2.7ghz, automatic vco sub-band selection) max2839aswo+t toc57 100khz 20khz/div -100khz 0 time (ms) 1.498 channel-switching frequency settling (2.7ghz to 2.3ghz, automatic vco sub-band selection) max2839aswo+t toc58 100khz 20khz/div -100khz 0 time ( channel-switching frequency settling (2.7ghz to 2.3ghz, manual vco sub-band selection) max2839aswo+t toc60 100khz 20khz/div - 100khz 0 time ( channel-switching frequency settling (2.3ghz to 2.7ghz, manual vco sub-band selection) max2839aswo+t toc59 10khz/div 2v/div 1 tx-to-rx turnaround frequency glitch settling max2839aswo+t toc61 tx to rx switching frequency error frequency error rx-to-tx turnaround frequency glitching settling max2839aswo+t toc62 1 s/div 2v/div 10khz/div rx to tx switching typical operating characteristics (continued) (v cc_ = 2.8v, t a = +25?, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 ? unbalanced output of balun, using the max2839as evaluation kit.)
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver ______________________________________________________________________________________ 19 bump description bump name function 1 gndrxlna_a receiver a lna ground 2v ccrxlna_a receiver a lna supply voltage. bypass with a 22pf capacitor as close as possible to the pin. 3v ccrxlna_b receiver b lna supply voltage. bypass with a 22pf capacitor as close as possible to the pin. 4 gnd_lna_b receiver b lna ground 5 rxinb+ receiver b lna differential input plus. input is internally dc-coupled. 6 gnd_mxr_b receiver b mixer ground 7 b2 receiver and transmitter gain-control logic input bit 2 8 b3 receiver and transmitter gain-control logic input bit 3 9 b4 receiver and transmitter gain-control logic input bit 4 10 v cctxpad supply voltage for transmitter power amplifier driver. bypass with a 22pf capacitor as close as possible to the pin. 11 gnd1_pad_rf transmit power amplifier driver ground 12 gnd2_pad_rf transmit power amplifier driver ground 13 pabias transmit external power amplifier bias dac output 14 gnd_txmx transmit upconverter ground 15 sclk serial-clock logic input of 4-wire serial interface 16 refclk reference clock input. ac-couple a reference clock to this analog input. 17 v ccxtal crystal oscillator supply voltage. bypass with a 100nf capacitor as close as possible to the pin. 18 v cccp pll charge-pump supply voltage. bypass with a 100nf capacitor as close as possible to the pin. 19 gndcp charge-pump ground 20 cpout+ differential charge-pump output plus. connect the frequency synthesizer? loop filter between cpout+ and cpout- (see the typical operating circuit ). 21 gndvco vco ground 22 vcobyp on-chip vco regulator output bypass. bypass with a 1? capacitor to gnd. do not connect other circuitry to this point. 23 v ccvco vco supply voltage. bypass with a 22nf capacitor as close as possible to the pin. 24 gnd_lo local oscillator generation ground 25 cs active-low chip-select logic input of 4-wire serial interface 26 gnd_rxbb_b receiver b baseband ground 27 rxbbib+ receiver b baseband i-channel differential output plus 28 rxbbqb+ receiver b baseband q-channel differential output plus 29 b6 receiver and transmitter gain-control logic input bit 6 30 rxbbqa- receiver a baseband q-channel differential output minus 31 rxbbqa+ receiver a baseband q-channel differential output plus 32 v ccrxvga receiver vga supply voltage. bypass with a 100nf capacitor as close as possible to the pin. 33 gnd_rxbb_a receiver a baseband ground 34 gnd_rxlogen receiver divide-by-2 ground 35 gnd_mxr_a receiver a mixer ground 36 gnd_lna_a receiver a lna ground 37 txbbq- transmitter baseband q-channel differential input minus 38 clkout_div clockout divide ratio select logic input
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 20 ______________________________________________________________________________________ bump description (continued) bump name function 39 gndrxlna_b receiver b lna ground 40 rxinb- receiver b lna differential input minus. input is internally dc-coupled. 41 txrx transmit/receive mode enable logic input 42 b5 receiver and transmitter gain-control logic input bit 5 43 txout+ power amplifier driver differential output plus. the pin is biased at v cc /2 internally. 44 b1 receiver and transmitter gain-control logic input bit 1 45 txout- power amplifier driver differential output minus. the pin is biased at v cc /2 internally. 46 v cctxmx transmitter upconverter supply voltage. bypass with a 22pf capacitor as close as possible to the pin. 47 clkout reference clock buffer output 48 gnd_xtal crystal oscillator ground 49 gnd_dig pll digital ground 50 v cc_dig pll digital supply voltage. bypass with a 100nf capacitor as close as possible to the pin. 51 cpout- differential charge-pump output minus. connect the frequency synthesizer? loop filter between cpout+ and cpout- (see the typical operating circuit ). 52, 67 gnd ground. connect to the pcb ground plane. 53 din data logic input of 4-wire serial interface 54 gnd_pad_bias transmit bias ground 55 xtal1 xtal input. ac-couple crystal to this analog pin. 56 rxhp receiver i- and q-channel ac-coupling highpass corner frequency selection logic input 57 rxbbia- receiver a baseband i-channel differential output minus 58 rxbbia+ receiver a baseband i-channel differential output plus 59 txbbi+ transmitter baseband i-channel differential input plus 60 txbbq+ transmitter baseband q-channel differential input plus 61 v ccrxmx receiver downconverters supply voltage. bypass with a 22pf capacitor as close as possible to the pin. 62 rxina- receiver a lna differential input minus. input is internally dc-coupled. 63 rxina+ receiver a lna differential input plus. input is internally dc-coupled. 64 b0 receiver and transmitter gain-control logic input bit 0 65 enable transceiver enable logic input 66 dout data logic output of 4-wire serial interface 68 rxbbib- receiver b baseband i-channel differential output minus 69 rxbbqb- receiver b baseband q-channel differential output minus 70 rssi receiver signal strength output 71 b7 receiver gain-control logic input bit 7 72 v ccrxfl receiver baseband filter supply voltage. bypass with a 100nf capacitor as close as possible to the pin. 73 txbbi- transmitter baseband i-channel differential input minus
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver ______________________________________________________________________________________ 21 detailed description modes of operation the modes of operation for the max2839as are shut- down, clock-out only, standby, receive, transmit, trans- mitter calibration, and receiver calibration. see table 1 for a summary of the modes of operation. when the parts are active, various blocks can be shutdown indi- vidually by programming different spi registers. shutdown mode the max2839as features a low-power shutdown mode. in shutdown mode, all circuit blocks are powered down, except the 4-wire serial bus and its internal programma- ble registers. clock-out only in clock-out mode, the entire transceiver is off except the divided reference clock output on the clkout pin and the clock divider, which remain on. standby mode the standby mode is used to enable the frequency synthesizer block while the rest of the device is pow- ered down. in this mode, the pll, vco, and lo gener- ator are on so that tx or rx modes can be quickly enabled from this mode. these and other blocks can be selectively enabled in this mode by programming different spi registers. receive (rx) mode in receive mode, all rx circuit blocks are powered on and active. antenna signal is applied; rf is downcon- verted, filtered, and buffered at rx bb i and q outputs. either receiver a or both receivers can be enabled. receiver b cannot be enabled by itself. transmit (tx) mode in transmit mode, all tx circuit blocks are powered on. the external pa is powered on after a programmable delay using the on-chip pa bias dac. transmitter (tx) calibration mode all tx circuit blocks except pa driver and external pa are powered on and active. the am detector and receiver i/q channel buffers are also on, along with multiplexers in the receiver side to route this am detec- tor? signal to each i and q differential outputs. when required, the i/q lowpass filter can be bypassed. mode control logic inputs circuit block states mode enable pin txrx pin spi reg1 d<3> spi reg16 d<1:0> rx path tx path pll, vco, lo gen calibration sections on clock o u t pu t shutdown 0 0 x xx off off off none off clock-out only 1 x x x0 off off off none on clock-out only x 1 x x0 off off off none on standby 0 1 x 01 off off on or off none on rx (1x2 mimo) 1 1 1 01 on off on none on rx (1x1 siso) 1 1 0 01 on (rx_a) off on none on tx 1 0 x 01 off on on none on tx calibration 1 0 x 11 off on (except pa driver) on spi reg7d<7> = 1 am detector + rx i, q buffers on rx_a calibration (loopback) 11011 on (except lna) on (except pa driver) on s p i re g26d < 3> = 1 loopback on rx_b calibration (loopback) 11111 on (except lna) on (except pa driver) on s p i re g26d < 3> = 1 loopback on table 1. operating mode
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 22 ______________________________________________________________________________________ receiver (rx) calibration or loopback part of the rx and tx circuit blocks except lna and pa driver are powered on and active. the transmitter i/q input signals are upconverted to rf, and the output of the tx gain control block (vga) is fed to the receiver at the input of the downconverter. either receiver a or both receivers can be connected to the transmitter and powered on. the i/q lowpass filters are not present in the transmitter signal path (they are bypassed). programmable registers and 4-wire spi interface the max2839as includes 32 programmable 16-bit reg- isters. the most significant bit (msb) is the read/write selection bit. the next 5 bits are register address. the 10 least significant bits (lsbs) are register data. register data is loaded through the 4-wire spi/microwire-compatible serial interface. data at din is shifted in msb first and is framed by cs . when cs is low, the clock is active, and input data is shifted at the rising edge of the clock. during the read mode, register data selected by address bits is shifted out to dout at the falling edges of the clock. at the cs rising edge, the 10-bit data bits are latched into the register selected by address bits. see figure 1. the register values are preserved in shutdown mode as long as the power-supply voltage is maintained. after power-up, the user must program all register values. din sclk bit 6 bit 2 bit 1 t ds t dh bit 14 bit 13 bit 5 t ch t cl t csh t cso t css t csw t cs1 dout don't care spi register write din sclk bit 2 bit 1 t d bit 5 cs dout don't care spi register read bit 6 bit 14 bit 13 don't care cs figure 1. 4-wire spi serial-interface timing diagram microwire is a trademark of national semiconductor corp.
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver ______________________________________________________________________________________ 23 spi register definitions (all values in the register definition table are typical numbers. the max2839as spi does not have a power-on-default feature; t he user must program all spi addresses for normal operation. prior to use of any untested settings, contact the factory.) table 2. max2839as register summary register no. register name default functions 0 rx_enable 000 reserved for internal use 1 rx_rf_1 00c ? lna band select, mimo mode select ? rx i/q phase error correction 2 rx_rf_2 081 ? lna gain spi control enable ? rx i/q phase error spi control enable 3 rx_rf/lpf 1b9 reserved for internal use 4 lpf 3e6 ? rf channel bandwidth select 5 lpf/vga_1 100 ? rx_a lna and vga gain controls ? lpf operating mode select 6 lpf/vga_2 000 ? rx_b lna and vga gain controls ? rx vga common-mode select 7 rssi/vga 208 ? rssi pin output select, operating mode as a function of rxhp, and receiver select ? rx baseband outputs routing select 8 rx_top_spi_1 222 ? rx vga gain spi control enable ? lpf operating mode select enable 9 rx_top_spi_2 018 ? temperature sensor enable, and adc readout trigger ? dout output selection, drive select, three-state output select 10 tx_top_ spi 00c ? tx am detector gain and filter bandwidth controls 11 temp_sen 004 ? temperature sensor adc readout 12 hpfsm 1 24f ? 10mhz hpc duration select when triggered by rxen or lna gain ? 600khz hpc duration select when triggered by rxen or lna gain 13 hpfsm 2 150 ? 100khz hpc duration select when triggered by rxen or lna gain ? 30khz hpc duration select when triggered by rxen or lna gain ? 1khz hpc duration select when triggered by rxen 14 hpfsm 3 3c5 ? 1khz hpc duration select when triggered by lna gain ? hpc rising edge delay and final highpass corner select ? hpc on-hold corner select as a function of rxhp ? hpc state machine retriggered by lna gain enable 15 hpfsm 4 201 ? hpc state machine clock divider, sequence bypass, and rxhp dependent select 16 blk_spi_en 01c ? block enabled by spi 17 frac_div_1 155 ? last 10 of 20 fractional divider bits 18 frac_div_2 155 ? first 10 of 20 fractional divider bits 19 int_div 153 ? integer divider bits ? lo generation band select 20 synth_config_1 249 ? reference divider ratio ? clkout buffer drive select 21 synth_config_2 02d reserved for internal use
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 24 ______________________________________________________________________________________ table 2. max2839as register summary (continued) register no. register name default functions 22 vas_config 1a9 ? vas operating mode select, relock location, clock divide ratio, delay counter ratio, and triggering 23 lo_misc_config 24f ? vas sub-band spi overwrite ? crystal oscillator bias select 24 xtal_config 180 ? crystal oscillator core enable, and frequency tuning 25 vco_config 000 reserved for internal use 26 logen_config 3c0 ? vas test signal select ? vtune test signal select ? logen g m enable 27 txlo_i/q_config 280 ? tx lo i/q phase adjustment by spi enable, and phase adjustment select ? tx dc correction by spi enable ? tx vga gain control by spi enable 28 pa_bias_ dac 0c0 ? pa dac output current select, and turn-on delay control 29 tx_gain_config 03f ? tx vga gain control 30 tx_dc corr_1 380 ? tx dc offset correction for i-channel ? pa dac output type select, and voltage mode output select 31 tx_dc_corr_2 340 ? tx dc offset correction for q-channel ? pa dac clock-divide ratio address bits data bits register name a4 a3 a2 a1 a0 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 rx_enable 0 0 0 000000000000 rx_rf_1 0 0 0 010000001100 rx_rf_2 0 0 0 100010000001 rx_rf/lpf 0 0 0 110110111001 lpf 001001111100110 lpf/vga_1 0 0 1 010100000000 lpf/vga_2 0 0 1 100000000000 rssi/vga 0 0 1 111000001000 rx_top_spi_1 0 1 0 001000100010 rx_top_spi_2 0 1 0 010000011000 tx_top_ spi 0 1 0 100000001100 temp_sen 0 1 0 110000000100 hpfsm 1 0 1 1 001001001111 hpfsm 2 0 1 1 010101010000 hpfsm 3 0 1 1 101111000101 hpfsm 4 0 1 1 111000000001 blk_spi_en 1 0 0 000000011100 frac_div_1 1 0 0 010101010101 frac_div_2 1 0 0 100101010101 int_div 1 0 0 110101010011
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver ______________________________________________________________________________________ 25 table 2. max2839as register summary (continued) address bits data bits register name a4 a3 a2 a1 a0 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 synth_config_1 1 0 1 001001001001 synth_config_2 1 0 1 010000101101 vas_config 1 0 1 100110101001 lo_misc_config 1 0 1 111001001111 xtal_config 1 1 0 000110000000 vco_config 1 1 0 010000000000 logen_config 1 1 0 101111000000 txlo_i/q_config 1 1 0 111010000000 pa_bias_ dac 1 1 1 000011000000 tx_gain_config 1 1 1 010000111111 tx_dc corr_1 1 1 1 101110000000 tx_dc_corr_2 1 1 1 111101000000 table 3. register 0: rx_enable register (address = 00000, default = 000 hex ) bit name bit location (0 = lsb) description reserved 9:0 reserved bits?et to default table 4. register 1: rx_rf_1 register (address = 00001, default = 00c hex ) bit name bit location (0 = lsb) description reserved 9:4 reserved bits?et to default mimo_mode_sel 3 mimo mode selection. 0 = rx_a 1 = rx_a + rx_b (default) reserved 2:1 reserved bits?et to default lna_band 0 lna output lc tank center frequency select. 0 = 2.3ghz to 2.5ghz (default) 1 = 2.5ghz to 2.7ghz table 5. register 2: rx_rf_2 register (address = 00010, default = 081 hex ) bit name bit location (0 = lsb) description reserved 9:1 reserved bits?et to default lna_gain_spi_en 0 lna gain control select. 0 = lna gain controlled by external pins b7 and b6 1 = lna gain controlled by spi through register 6 bits 1:0 (default)
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 26 ______________________________________________________________________________________ table 6. register 3: rx_rf/lpf register (address = 00011, default = 1b9 hex ) bit name bit location (0 = lsb) description reserved 9:0 reserved bits?et to default table 7. register 4: lpf register (address = 00100, default = 3e6 hex ) bit name bit location (0 = lsb) description ft<3:0> 9:6 rf channel bandwidth select. test at rfbw 5mhz, 10mhz, and 28mhz. 0000 = 1.75mhz 0001 = 2.5mhz 0010 = 3.5mhz 0011 = 5.0mhz 0100 = 5.5mhz 0101 = 6.0mhz 0110 = 7.0mhz 0111 = 8.0mhz 1000 = 9.0mhz 1001 = 10.0mhz 1010 = 12.0mhz 1011 = 14.0mhz 1100 = 15.0mhz 1101 = 20.0mhz 1110 = 24.0mhz 1111 = 28.0mhz (default) reserved 5:0 reserved bits?et to default table 8. register 5: lpf/vga_1 register (address = 00101, default = 100 hex ) bit name bit location (0 = lsb) description reserved 9:8 reserved bits?et to default vga1<5:0> 7:2 receiver 1 vga attenuation settings through spi. active when register 8 d<1> = 1. 000000 = max gain (default) 000001 = max - 1db ? 111110 = max - 62db 111111 = max - 63db (min gain) test at settings 000000, 000001, 001000, 010000, 100000, 110110, and 111111. lna1<1:0> 1:0 receiver 1 lna gain settings through spi. active when register 2 d<0> = 1. 00 = max gain (default) 01 = max - 8db 10 = max - 16db 11 = max - 32db
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver ______________________________________________________________________________________ 27 table 9. register 6: lpf/vga_2 register (address = 00110, default = 000 hex ) bit name bit location (0 = lsb) description buff_vcm<1:0> 9:8 rx vga output common-mode voltage select. 00 = 1.05v (default) 01 = 1.15v 10 = 1.25v 11 = 1.45v vga2<5:0> 7:2 receiver 2 vga attenuation settings through spi. active when register 8 d<1> = 1. 000000 = max gain (default) 000001 = max - 1db ? 111110 = max - 62db 111111 = max - 63db (min gain) test at settings 000000, 000001, 001000, 010000, 100000, 110110, and 111111. lna2<1:0> 1:0 receiver 2 lna gain settings through spi. active when register 2 d<0> = 1. 00 = max gain (default) 01 = max - 8db 10 = max - 16db 11 = max - 32db table 10. register 7: rssi/vga register (address = 00111, default = 208 hex ) bit name bit location (0 = lsb) description rssi_rxsel 9 rssi for receiver 1 or 2 select. 0 = rssi for receiver 2 1 = rssi for receiver 1 (default) reserved 8 reserved bits?et to default sel_in1_in2 7 rxbbi output select. 0 = select rx vga output (default) 1 = select tx am detector output reserved 6:0 reserved bits?et to default
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 28 ______________________________________________________________________________________ table 11. register 8: rx_top_spi_1 register (address = 01000, default = 222 hex ) bit name bit location (0 = lsb) description reserved 9:3 reserved bits?et to default lpf_mode_sel 2 lpf operating mode select. 0 = lpf response changes automatically between tx and rx by txrx pin (default) 1 = lpf response fixed in tx, rx, calibration, or trim mode as defined in register 5 d<9:8> vga_gain _spi_en 1 rx vga gain control through spi. 0 = rx vga gain controlled by external pins b5:b1 1 = rx vga gain controlled by spi (default) reserved 0 reserved bits?et to default table 13. register 10: tx_top_spi register (address = 01010, default = 00c hex ) bit name bit location (0 = lsb) description reserved 9:2 reserved bits?et to default txcal_gain<1:0> 1:0 transmit am detector baseband gain control select. 00 = minimum gain (default) 01 = +10db 10 = +20db 11 = +30db table 12. register 9: rx_top_spi_2 register (address = 01001, default = 018 hex ) bit name bit location (0 = lsb) description reserved 9:8 reserved bits?et to default dout_sel<2:0> 7:5 dout pin multiplexed output select. 000 = spi register (default) 001 = pll lock detect. set register 21 d<9:7> = 000 for lock-detect out. 010 = vas and vtune outputs defined by register 26 d<9:6> dout_csb_sel 4 dout pin three-state control. 0 = dout pin is independent of csb pin 1 = dout pin is in three-state mode when csb is high (default) dout_drvh 3 dout pin output drive select. 0 = 1x drive. delay < 4.4ns. 1 = 4x drive. delay < 3.1ns (default). reserved 2 reserved bits?et to default ts_en 1 temperature sensor comparator and clock enable. 0 = disabled (default) 1 = enabled ts_adc_trig 0 temperature sensor adc trigger. 0 = not trigger adc readout (default) 1 = trigger adc readout. adc is disabled automatically after readout finishes.
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver ______________________________________________________________________________________ 29 table 14. register 11: temp_sen register (address = 01011, default = 004 hex ) bit name bit location (0 = lsb) description reserved 9:0 reserved bits?et to default. readout at dout pin through spi a[4:0] = 01011, d[4:0] table 15. register 12: hpfsm 1 register (address = 01100, default = 24f hex ) bit name bit location (0 = lsb) description hpc_600k_gain<2:0> 9:7 rx vga highpass corner duration at 600khz. triggered by lna gain change. test at settings 000, 001, and 011. 000 = 0? 001 = 0.8? 010 = 1.6? 011 = 2.4? 100 = 3.2? (default) 101 = 4.0? 110 = 4.8? 111 = stay ? hpc_600k<2:0> 6:4 rx vga highpass corner duration at 600khz. triggered by rxen rising edge. test at settings 000, 100, and 110. 000 = 0? 001 = 0.8? 010 = 1.6? 011 = 2.4? 100 = 3.2? (default) 101 = 4.0? 110 = 4.8? 111 = stay ? hpc_10m_gain<1:0> 3:2 rx vga highpass corner duration at 10mhz. triggered by lna gain change. test at settings 00, 01, and 11. 00 = 0? 01 = 0.4? 10 = 0.8? 11 = 1.2? (default) hpc_10m<1:0> 1:0 rx vga highpass corner duration 10mhz. triggered by rxen rising edge. test at settings 00 and 11. 00 = 0? 01 = 0.4? 10 = 0.8? 11 = 1.2? (default)
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 30 ______________________________________________________________________________________ table 16. register 13: hpfsm 2 register (address = 01101, default = 150 hex ) bit name bit location (0 = lsb) description hpc_1k<1:0> 9:8 rx vga highpass corner duration at 1khz. triggered by rxen rising edge. test at settings 00, 01, and 11. 00 = 0? 01 = 3.2? (default) 10 = 6.4? 11 = 9.6? hpc_30k_gain<1:0> 7:6 rx vga highpass corner duration at 30khz. triggered by lna gain change. test at settings 00 and 01. 00 = 0? 01 = 3.2? (default) 10 = 6.4? 11 = 9.6? hpc_30k<1:0> 5:4 rx vga highpass corner duration at 30khz. triggered by rxen rising edge. test at settings 00, 01, and 10. 00 = 0? 01 = 3.2? (default) 10 = 6.4? 11 = 9.6? hpc_100k_gain<1:0> 3:2 rx vga highpass corner duration at 100khz. triggered by lna gain change. test at settings 00 and 11. 00 = 0? (default) 01 = 3.2? 10 = 6.4? 11 = 9.6? hpc_100k<1:0> 1:0 rx vga highpass corner duration at 100khz. triggered by rxen rising edge. test at settings 00, 01, and 11. 00 = 0? (default) 01 = 3.2? 10 = 6.4? 11 = 9.6?
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver ______________________________________________________________________________________ 31 table 17. register 14: hpfsm 3 register (address = 01110, default = 3c5 hex ) bit name bit location (0 = lsb) description txgate_en 9 pa driver and dac on/off state gated by pll lock detect. 0 = independent of pll lock detect 1 = disable pa driver when pll lock detect = 0 (default) reserved 8 reserved bits?et to default hpc_stop_m2<1:0> 7:6 rx vga on-hold highpass corner when rxhp = 1. test at settings 00, 01, and 11. only active when reg15_d9 = 1. 00 = 1khz 01 = 30khz 10 = 100khz 11 = 600khz (default) hpc_stop<1:0> 5:4 rx vga final highpass corner selection. test at settings 00, 01, and 11. 00 = 100hz (default) 01 = 1khz 10 = 30khz 11 = 100khz hpc_delay<1:0> 3:2 rx vga hpc a and hpc d rising edge delay for 100k, 30k, 1k, and 100hz highpass corner. test at settings 00, 01, and 11. 00 = 0? 01 = 0.2? (default) 10 = 0.4? 11 = 0.6? hpc_1k_gain<1:0> 1:0 rx vga highpass corner duration at 1khz. triggered by lna gain change. test at settings 00, 01, and 10. 00 = 0? 01 = 3.2? (default) 10 = 6.4? 11 = 9.6? table 18. register 15: hpfsm 4 register (address = 01111, default = 201 hex ) bit name bit location (0 = lsb) description hp_mode 9 highpass corner control using rxhp. 0 = highpass corner switches automatically without rxhp 1 = highpass corner switches dependent on rxhp (default) reserved 8:7 reserved bits?et to default hpc_seq_byp 6 highpass corner switching sequence bypassed during rxhp transition from 1 to 0. 0 = start switching from highpass corner set by hpc_stop_m2<1:0> in register 14 and continue with programmed sequence (default) 1 = switch from highpass corner set by hpc_stop_m2<1:0> directly to final highpass corner set by hpc_stop<1:0> in register 14. reserved 5:0 reserved bits?et to default
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 32 ______________________________________________________________________________________ table 19. register 16: blk_spi_en register (address = 10000, default = 01c hex ) bit name bit location (0 = lsb) description reserved 9:8 reserved bits?et to default padac_tx_en 7 pa bias dac tx mode enable bit. enables pa bias dac only in tx mode. turn-on delay is controlled by bits 9:6 of register 28. 0 = disabled (default) 1 = enabled when txrx = 0 padac_spi_en 6 pa bias dac spi enable bit. turn-on delay is controlled by bits 9:6 of register 28. 0 = disabled (default) 1 = enabled in all modes except for shutdown reserved 5:2 reserved bits?et to default cal_spi 1 receive and transmit calibration mode enable bit. rx or tx calibration mode is selected by txrx pin. 0 = normal receive or transmit mode (default) 1 = calibration mode en_spi 0 transceiver enable bit. 0 = disabled (default) 1 = enabled. enable pin must also be 1 to turn on transceiver. table 20. register 17: frac_div_1 register (address = 10001, default = 155 hex ) bit name bit location (0 = lsb) description syn_config0<9:0> 9:0 bits 9:0 of the 20-bit fractional divide ratio. the remaining bits 19:10 reside in register 18. both registers are combined to form the 20-bit fractional word. program register 17 to engage the stored values of registers 18 and 19. table 21. register 18: frac_div_2 register (address = 10010, default = 155 hex ) bit name bit location (0 = lsb) description syn_config0<19:10> 9:0 bits 19:10 of the 20-bit fractional divide ratio. the remaining bits 9:0 reside in register 17. both registers are combined to form the 20-bit fractional word. program register 18 before register 17.
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver ______________________________________________________________________________________ 33 table 22. register 19: int_div register (address = 10011, default = 153 hex ) bit name bit location (0 = lsb) description logen_bsw<1:0> 9:8 lo generation band switch control for optimal transmit spur. 00 = 2300mhz to 2399.99mhz 01 = 2400mhz to 2499.99mhz (default) 10 = 2500mhz to 2599.99mhz 11 = 2600mhz to 2700mhz syn_config1<7:0> 7:0 synthesizer 8-bit integer divide ratio. program register 19 before register 17. test at settings between 76 and 90 to support lo frequency between 2300mhz and 2700mhz. table 23. register 20: synth_config_1 register (address = 10100, default = 249 hex ) bit name bit location (0 = lsb) description reserved 9:6 reserved bits?et to default clkout_drv 5 reference clock output buffer drive selection. 0 = 1x drive (default) 1 = 4x drive reserved 4:3 reserved bits?et to default syn_config1<1:0> 2:1 reference divide ratio selection. 00 = divide by 1 (default) 01 = divide by 2 10 = divide by 4 reserved 0 reserved bit?et to default table 24. register 21: synth_config_2 register (address = 10101, default = 02d hex ) bit name bit location (0 = lsb) description reserved 9:0 reserved bits?et to default table 25. register 22: vas_config register (address = 10110, default = 1a9 hex ) bit name bit location (0 = lsb) description reserved 9:1 reserved bits?et to default vas_mode 0 vco autoselect (vas) operating mode selection. 0 = manually select vco sub-band by spi register 23 d[4:0] 1 = select vco sub-band automatically by vas (default)
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 34 ______________________________________________________________________________________ table 26. register 23: lo_ misc_config register (address = 10111, default = 24f hex ) bit name bit location (0 = lsb) description reserved 9:5 reserved bits?et to default vas_spi<4:0> 4:0 vco autoselect (vas) sub-band spi overwrite. active when register 22 d0 = 0. 00000 = minimum frequency - sub-band 0 00001 = sub-band 1 01111 = sub-band 15 (default) 11110 = sub band 30 11111 = maximum frequency - sub-band 31 table 27. register 24: xtal_config register (address = 11000, default = 180 hex ) bit name bit location (0 = lsb) description reserved 9:7 reserved bits?et to default xtal<6:0> 6:0 crystal oscillator frequency tuning. 0000000 = minimum frequency tuning (default) . 1111111 = maximum frequency tuning table 28. register 25: vco_config register (address = 11001, default = 000 hex ) bit name bit location (0 = lsb) description reserved 9:0 reserved bits?et to default
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver ______________________________________________________________________________________ 35 table 29. register 26: logen_config register (address = 11010, default = 3c0 hex ) bit name bit location (0 = lsb) description vas_tst<3:0> 9:6 vco autoselect (vas) sub-band and vco tune voltage test signal output sel ect. resul ts ar e d el i ver ed to d ou t p i n b y setti ng r eg i ster 9 d < 7:5> = 010. v c o _bs w< 4:0> = 5 v c o sub - b and b i ts r ep r esenti ng sub - b and num b er 0 to 31. 0000 = vco_bsw<0> 0001 = vco_bsw<1> 0010 = vco_bsw<2> 0011 = vco_bsw<3> 0100 = vco_bsw<4> vtune_adc<2:0> = 3-bit adc output representing vco tune voltage. 0101 = vtune_adc<0> 0110 = vtune_adc<1> 0111 = vtune_adc<2> 1111 = 0 (default) reserved 5:4 reserved bits?et to default logen_2gm 3 lo generation g m enable. 0 = function of txrx and enable pins (default) 1 = enable both rx/tx output (required for rx loopback calibration) reserved 2:0 reserved bits?et to default table 30. register 27: txlo_i/q_config register (address = 11011, default = 280 hex ) bit name bit location (0 = lsb) description reserved 9:8 reserved bits?et to default txvga_gain_spi_en 7 transmit vga gain control through spi enable bit. 0 = tx vga gain control by pins b6:b1. 1 = tx vga gain control by register 29 d[5:0] (default) reserved 6:0 reserved bits?et to default table 31. register 28: pa_bias_dac register (address = 11100, default = 0c0 hex ) bit name bit location (0 = lsb) description padac_dly<3:0> 9:6 pa bias dac turn-on delay control. 0000 = 0? 0001 = 0? 0010 = 0.5? 0011 = 1.0? (default) 1111 = 7.0? reserved 5:0 reserved bits?et to default
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 36 ______________________________________________________________________________________ table 32. register 29: tx_gain_config register (address = 11101, default = 03f hex ) bit name bit location (0 = lsb) description reserved 9:6 reserved bits?et to default txvga_gain_spi<5:0> 5:0 tx vga gain control through spi. active when register 27 d7 = 1. 000000 = 0db attenuation (max gain) 000001 = max - 1db ? 011111 = max - 31db ? 111111 = max - 63db (default) test at settings 000000, 000011, 001001, 001010, 011101, 011110, and 111111. table 33. register 30: tx_dc_corr_1 register (address = 11110, default = 380 hex ) bit name bit location (0 = lsb) description padac_vmode 9 pa dac voltage mode output select active when register 30 d8 = 0. 0 = logic ??output 1 = logic ??output (default) reserved 8:0 reserved bits?et to default table 34. register 31: tx_dc_corr_2 configuration register (address = 11111, default = 340h ex ) bit name bit location (0 = lsb) description reserved 9:0 reserved bits?et to default
max2839as 2.3ghz to 2.7ghz mimo wireless broadbandrf transceiver ______________________________________________________________________________________ 37 63 62 41 61 37 60 59 73 72 32 58 57 31 30 44 42 13 46 15 65 47 16 55 17 18 19 20 51 56 29 71 70 28 69 27 68 53 66 25 23 22 21 1 2 64 38 3 39 5 40 9 8 10 7 43 45 rx basband hpf control rx/tx gain control rx gain control serial input serial output serial input pll filter tx output rx b input tx inputs rx a input rx a outputs imux qmux crystal oscillator/ buffer pll serial interface sclk temp sensor imux qmux rssi mux rssi 90 0 am detector imux/qmux + rxhp b6 b7 rssi rxbbqb- rxbbqb+ rxbbib+ rxbbib- din dout cs v ccvco vcobyp gndvco gndcp cpout+ cpout- xtal1 v ccxtal v cccp refclk clkout enable sclk v cctxmx pabias b5 b1 gndrxlna_a v ccrxlna_a b0 clkout_div v ccrxlna_b gndrxlna_b rxinb+ rxinb- b4 b3 v cctxpad b2 txout+ txout- rxbbia- v ccrxfl v ccrxvga rxbbia+ rxbbqa- rxbbqa+ txbbi- txbbi+ txbbq+ txbbq- v ccrxmx txrx rxina- rxina+ mode control rx/tx gain control clkout select rx/tx gain control rx/tx gain control rx/tx gain control rx/tx gain control serial input mode control reference clock output rx b outputs max2839as serial interface typical operating circuit
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver 38 ______________________________________________________________________________________ chip information process: bicmos 1 2 3 4 5 6 7 8 9 10 11 12 13 14 46 45 44 42 41 40 39 38 64 63 62 61 60 59 37 73 58 57 30 29 28 27 26 25 24 23 52 50 51 65 54 55 16 17 18 19 47 48 49 22 21 20 56 72 71 69 68 66 67 53 70 36 35 34 33 32 31 43 15 max2839as bump configuration package type package code document no. 73 wlp w733a5+1 21-0146 package information for the latest package outline information and land patterns, go to www.maxim-ic.com/packages . note that a ?? ?? or ??in the package code indicates rohs status only. package draw- ings may show a different suffix character, but the drawing per- tains to the package regardless of rohs status.
max2839as 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 39 2010 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history revision number revision date description pages changed 0 4/09 initial release 1 5/10 added soldering temperature to absolute maximum ratings ; corrected name in global references to max2839as evaluation kit 2?8

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