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d a t a sh eet preliminary speci?cation file under integrated circuits, ic01 september 1993 integrated circuits TEA6821T ice car radio
september 1993 2 philips semiconductors preliminary speci?cation ice car radio TEA6821T features general fm mixer for conversion from fm if 1 = 72.2 mhz to fm if 2 = 10.7 mhz am mixer for conversion from am if 1 = 10.7 mhz to am if 2 = 450 khz fm if gain stage crystal oscillator providing mixer frequencies and references for if count and stereo decoder fm quadrature demodulator with automatic centre frequency adjust and thd compensation level and multipath and noise detectors soft mute stereo noise cancelling and variable de-emphasis pll stereo decoder noise blanker am if amplifier and demodulator i 2 c-bus transceiver if count for am and fm reference frequency generation for pll synthesizer reduced external components sw applicable. stereo decoder adjustment-free pll-vco pilot depending mono/stereo switching analog control of mono/stereo blend adjacent channel noise suppression (114 khz) pilot canceller analog control of de-emphasis integrated low-pass filters for 190 khz adjacent channel interferences and signal delay for interference absorption circuit. general description the TEA6821T together with the tea6810t / tea6811t forms an am/fm electronic tuned car radio in a double conversion receiver concept for european, american and japanese frequency range. quick reference data note to the quick reference data 1. ic is functional, specified parameters may deviate from limits which are valid for operating range. symbol parameter conditions min. typ. max. unit v s1 supply voltage 1 (pins 56 and 28) note 1 7 8.5 10 v v s1 operating range 8.1 8.5 8.9 v i s1 supply current 1 fm - 28 - ma i s1 supply current 1 am - 24 - ma v s2 supply voltage 2 (pin 5) note 1 4.5 5.0 5.5 v v s2 operating range 4.75 5.0 5.25 v i s2 supply current 2 fm - 31 - ma i s2 supply current 2 am - 28 - ma s + n/n signal-to-noise am m = 0.3 - 57 - db thd distortion am - 12% s + n/n signal-to-noise fm d f = 22.5 khz at pins 43 and 47 66 72 - db thd distortion fm d f = 75 khz - 0.1 0.35 % a channel separation (adjusted) 40 -- db t amb operating ambient temperature - 40 - +85 c
september 1993 3 philips semiconductors preliminary speci?cation ice car radio TEA6821T ordering information type number package name description version TEA6821T vso56 plastic very small outline package; 56 leads sot190-1
september 1993 4 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.1 block diagram (continued in fig.2).
september 1993 5 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.2 block diagram (continued from fig.1).
september 1993 6 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.3 ice91 application diagram (continued in fig.4).
september 1993 7 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.4 ice91 application diagram (continued from fig.3).
september 1993 8 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.5 am/fm car radio receiver with tea6811t and TEA6821T (continued in fig.6).
september 1993 9 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.6 am/fm car radio receiver with tea6811t and TEA6821T (continued from fig.5).
september 1993 10 philips semiconductors preliminary speci?cation ice car radio TEA6821T pinning symbol pin description qdet1 1 demodulator tank qdet2 2 demodulator tank tswitch 3 time switch gnd 4 analog ground v p5 5 5 v supply voltage hfbus1 6 hf bus, pull-up to 5 v hfbus2 7 hf bus, pull-up to 5 v xtal1 8 crystal oscillator xtal2 9 crystal oscillator f refp 10 pll reference frequency f refn 11 pll reference frequency i ref 12 reference current fmif1in1 13 70 mhz fm-if input fmif1in2 14 70 mhz fm-if input tsdr 15 time constant for sdr tsds 16 time constant for sds v sds 17 sds control voltage v sdr 18 sdr control voltage fmif2out1 19 fm mixer output fmif2out2 20 fm mixer output v ref 21 reference voltage amif2out1 22 am mixer output amif2out2 23 am mixer output fmamdec 24 fm/am 10.7 mhz decoupling phasedet 25 phase detector pildet 26 pilot detector fmam10.7 27 fm/am 10.7 mhz input v pif 28 v p if ampli?er fmifampout 29 fm-if ampli?er output afgnd 30 af ground deemphr 31 de-emphasis capacitor right deemphl 32 de-emphasis capacitor left amif2in1 33 am if2 input 1 amif2in2 34 am if2 input 2 fmin2 35 fm limiter input dcfeed 36 dc feed fm limiter fmin1 37 fm limiter input leveladj 38 level adjust c afc 39 afc capacitor mpbuf 40 multipath buffer time constant outleft 41 af output left fmstop 42 fmstop adjust rds/amstop 43 mpx for rds/amstop adjust outright 44 af output right mpxin 45 stereo decoder mpx input iac in 46 iac input mpxout 47 fm demodulator mpx output amafout 48 am demodulator af output v mutaml 49 mute voltage / am level levelunweig 50 level unweighted i accontr 51 iac control voltage v pdig 52 v p digital sda 53 sda, pull-up to 5 v scl 54 scl, pull-up to 5 v busgnd 55 bus ground v p8.5 56 v p 8.5 v symbol pin description
september 1993 11 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.7 pin configuration. limiting values in accordance with the absolute maximum rating system (iec 134). note to the limiting values 1. charge device model class b: discharging a 200 pf capacitor through a 0 w series resistor. symbol parameter min. max. unit v s1 supply voltage 1 (pins 56 and 28) - 0.3 +12 v v s2 supply voltage 2 (pin 5) - 0.3 +6.5 v v s3 supply voltage 3 (pin 52) - 0.3 +6.5 v t stg storage temperature - 55 +150 c t amb operating ambient temperature - 40 +85 c v esd electrostatic handling (note 1) for pins 8 and 9 - 100 v for other pins - 300 v
september 1993 12 philips semiconductors preliminary speci?cation ice car radio TEA6821T characteristics v 56-4 =v 28-4 = 8.5 v, v 5-4 = v 52-55 = 5 v, t amb = + 25 c unless otherwise speci?ed. symbol parameter conditions min. typ. max. unit current consumption i s1 supply current 1 fm 24 30 36 ma i 56 supply current 1at pin 56 16 20 24 ma i 28 supply current 1 at pin 28 2.4 3.0 3.6 ma i 19 + i 20 supply current 1 at pins 19 and 20 4.8 6.0 7.2 ma i s1 supply current 1 am 18 24 30 ma i 56 supply current 1at pin 56 9.5 12 15 ma i 22 + i 23 supply current 1 at pins 22 and 23 8 10 12.5 ma i s2 supply current 2 at pin 5 fm 18 21 25 ma am 14 17 21 ma i s3 supply current 3 at pin 52 8 10 12 ma fm if path fm mixer r 13-14 input resistance 5 7 - k w c 13-4, c 14-4 input capacitance - 3 4.5 pf r opt optimum generator resistance - 1.2 - k w r 19-20 output resistance 15 20 - k w c 19-4 , c 20-4 output capacitance - 57pf i 19if2 /v 13-14if1 conversion gain 1.65 1.9 2.2 ms i 19 , i 20 mixer bias current 2.4 3.0 3.6 ma mixer leakage current in am position -- 2 m a v 19-20 maximum output voltage (peak-to-peak value) 12.0 14.0 - v ip3 third order intermodulation 114 124 - db m v oscillator f osc oscillator frequency - 61.5 - mhz oscillator spread -- 250 hz d f osc / d t temperature dependence of oscillator frequency crystal type philips 9922 521 00098 - 30 - ppm/k r 1 crystal motional resistance -- 70 w c 0 crystal shunt capacitance -- 5pf fm if2 ampli?er v 29-4 /v 27-24 ampli?er gain loaded with 330 w; see fig.9 8 1012db v 27-24 maximum input voltage for 1 db compression point (rms value) 80 110 - mv
september 1993 13 philips semiconductors preliminary speci?cation ice car radio TEA6821T v 29-4 maximum output voltage (rms value) 220 270 - mv r 27-24 input resistance 300 330 360 w c 27-4 , c 24-4 input capacitance -- 5pf r 29-4 output resistance 300 330 360 w c 29-4 output capacitance -- 5pf fm if2 limiter v 1-2 /v 37-35 limiter gain see fig.10 - 74 - db c 37-4 input capacitance -- 5pf r 1-2 output resistance -- 1.0 k w c 1-2 output capacitance 10 15 20 pf v 1-2 limiter output voltage (peak-to-peak value) 500 700 - mv fm demodulator f mod = 1khz; deviation = 22.5 khz; r g = 50 w ; v 37-35 = 10 mv; with de-emphasis = 50 m s; coil quality = 15 unless otherwise speci?ed. v 47-4 mpx output (rms value) 160 200 240 mv r 47out output resistance -- 500 w b af bandwidth 200 -- khz v 43-4 mpx output for rds (rms value) 160 200 240 mv r 43out output resistance -- 500 w b af bandwidth 200 -- khz v 37-35 start of limiting (rms value) a af = - 3 db - 40 60 m v v 37-35 input voltage for signal-plus-noise-to-noise ratio (rms value) see fig.11 for pin 47 (mpxout) and fig.12 for pin 43 (rds/amstop) s+n/n = 26 db - 40 55 m v s+n/n = 46 db - 100 140 m v s + n/n signal-plus-noise-to-noise ratio 66 72 - db v 43fm /v 43am suppression d f = 22.5 khz; 55 60 - db f modam = 1 khz; m am = 30%; v 37-35 = 3 mv to 300 mv v 47fm /v 47am suppression v 37-35 = 1 mv to 300 mv 55 60 - db symbol parameter conditions min. typ. max. unit
september 1993 14 philips semiconductors preliminary speci?cation ice car radio TEA6821T thd total harmonic distortion detuning 50 khz; d f = 75 khz; f mod = 1 khz without de-emphasis l demod = typical value pin 43 - 0.1 0.35 % v 37-35 = 300 m v to 800 mv pin 47 - 0.1 0.35 % v 37-35 = 1 mv to 800 mv d v 43afcdisabled / d v 43afcactive demodulator frequency control (afc) ef?ciency at 100 khz detune from exact tuning 30 34 - db d v 43 residual dc-offset d l demod = typical value; 10 m v september 1993 15 philips semiconductors preliminary speci?cation ice car radio TEA6821T v/20 db slope of mute voltage d v 49-4 / d v 37-35 v 37-35 100 m v (rms) < 300 mv 0.75 0.845 0.95 v d v 49-4 /vk temperature dependence v 37-35 = 1 mv - 4.0 - mv/vk attack and decay time for mute voltage. i 49 charge current pin 3 connected to gnd - 3.0 -m a discharge current -- 3.6 -m a charge current pin 3 connected to pin 21 - 130 -m a discharge current -- 160 -m a d f muting activated by 60 khz fm interference pin 3 connected to gnd; v 37-35 = 3 mv; v 49 < 2 v; f mod = 60 khz - 30 - khz time constant for mono/stereo blend voltage. the mono/stereo blend voltage is generated as a function of fm if 2 voltage, multipath level, noise and position of tswitch. i 16 charge current v 37-35 = 3 mv; - 0.5 -m a discharge current pin 3 connected to gnd -- 18 -m a charge current v 37-35 = 3 mv; - 26 -m a discharge current pin 3 connected to pin 21 -- 800 -m a m mono/stereo blend activated by 20 khz am interference v 16 < 2 v; v 37-35 = 3 mv; r l16 > 50 m w ; f mod = 20 khz; pin 3 connected to gnd - 45 - % pin 3 connected to pin 21 - 40 - % d f mono/stereo blend activated by 60 khz fm interference v 16 < 3 v; v 37-35 = 3 mv; r l16 > 50 m w ; f mod = 60 khz; pin 3 connected to gnd - 30 - khz pin 3 connected to pin 21 - 22 - khz time constant for high-cut control voltage (sdr). the high-cut control voltage is generated as a function of fm if 2 voltage, multipath level, noise and position of tswitch. i 15 charge current v 37-35 = 3 mv; - 0.4 -m a discharge current pin 3 connected to gnd -- 0.44 -m a charge current v 37-35 = 3 mv; - 41 -m a discharge current pin 3 connected to pin 21 -- 44 -m a m high-cut control activated by 20 khz am interference v 15 < 2 v; v 37-35 = 3 mv; r l15 > 50 m w ; f mod = 20 khz; pin 3 connected to gnd - 40 - % pin 3 connected to pin 21 - 35 - % d f high-cut control activated by 60 khz fm interference v 15 < 2 v; v 37-35 = 3 mv; r l15 > 50 m w ; f mod = 60 khz; pin 3 connected to gnd - 25 - khz pin 3 connected to pin 21 - 20 - khz symbol parameter conditions min. typ. max. unit
september 1993 16 philips semiconductors preliminary speci?cation ice car radio TEA6821T multipath detector f mp multipath detector band-pass centre frequency - 20 - khz b mp band-pass bandwidth 7.0 -- khz reference voltage v 21-4 output voltage i 21 = - 1 ma 4.5 5.1 5.7 v d v 21-4 temperature dependence - 3.3 - mv/vk i 21 output current -- 1ma am if path am mixer ; f if1 = 10.7 mhz; f if2 = 450 khz; (see fig.18) r 27-24 input resistance 300 330 360 w c 27-24 input capacitance - 58pf r 22-23 output resistance 10.0 20.0 - k w c 22-23 output capacitance - 510pf i 22if2 /v 27-24if1 conversion gain 2.2 2.7 3.4 ms i 22 , i 23 mixer bias current 4.0 5.0 6.0 ma mixer leakage current in fm position -- 2 m a v 22-23 maximum output voltage (peak-to-peak value) 12 15 - v ip3 third order intermodulation - 137 - db m v am oscillator the am oscillator signal is generated by division of the 61.5 mhz crystal oscillator. two divider ratios programmable via i 2 c-bus: division by 6 (am if 1 = 10.7 mhz), division by 2 (am if 1 = 30 mhz) am detector f amif2 = 450 khz; f mod = 400 hz; m = 30% v 48-4 af output level (rms value) r l48 > 500 k w ; 190 240 290 mv 300 m v v 33-34 300 mv v 33-34 sensitivity (rms value) s+n/n = 26 db - 150 250 m v s + n/n = 46 db - 500 700 m v s + n/n signal-plus-noise-to-noise ratio 54 57 - db thd total harmonic distortion m = 0.8; 1 mv v 24-23 300 mv - 1.0 3.0 % v 33-34 am if 2 minimum input (rms value) thd 5%; m = 0.8 -- 500 m v am if 2 maximum input (rms value) 800 -- mv r 33-34 if 2 input resistance 1.8 2.0 2.2 k w c 24-23 if 2 input capacitance - 10 15 pf r 48out output resistance 27 33 39 k w c 48out output capacitance -- 10 pf typical am level curve see fig.19 stereo decoder; note 1 input signal ( d f = 75 khz) v mpx (p-p) = 1.7 v; modulation frequency f mod = 1 khz; de-emphasis time constant t =50 m s; nominal input resistor (pin 45) r i = 168 k w . symbol parameter conditions min. typ. max. unit
september 1993 17 philips semiconductors preliminary speci?cation ice car radio TEA6821T mpx input overdrive margin thd = 1% 4 -- db v 44-4 , v 41-4 af output voltage (rms value) 800 900 1000 mv v 44-4 /v 41-4 difference of output voltage -- 1db r o44 , r o41 output resistor -- 130 w r imin minimum load resistor 12 -- k w i 44 , i 41 maximum output current 150 --m a v 44-4 , v 41-4 dc output voltage 3.3 3.8 4.3 v a channel separation (adjusted; a typical roll-off at f mpx = 38 khz of 1 db is internally compensated) 40 -- db thd total harmonic distortion - 0.1 0.3 % s + n/n signal-plus-noise-to-noise ratio f = 20 hz to 20 khz 74 80 - db carrier and harmonic suppression at the output (note to the stereo decoder). a 19 pilot signal f = 19 khz - 50 - db a 38 subcarrier f = 38 khz - 50 - db a 57 (4) f = 57 khz - 46 - db a 76 f = 76 khz - 60 - db a 2 (2) intermodulation f mod = 10 khz; f spur = 1 khz - 60 - db a 3 (3) f mod = 13 khz; f spur = 1 khz - 58 - db a 57 (4) traf?c radio (ari) f = 57 khz - 70 - db a 67 (5) subsidiary communications authorization f = 67 khz 70 -- db a 114 (6) adjacent channel frequency f = 114 khz - 80 - db a 190 (7) f = 190 khz - 70 - db a rr ripple rejection at output f r = 100 hz; v r = 100 mv eff - 30 - db mono/stereo control v ipil pilot threshold voltage stereo on - 24 30 mv mono on 8 20 - mv d v ipil switch hysteresis v ion /v ioff - 2 - db the stereo decoder can be set to mono via the i 2 c-bus pilot presence indication via i 2 c-bus external mono/stereo control v 17 - 0.75v 21 control voltage channel separation see fig.21 a = 6 db -- 80 - mv a = 16 db -- 40 - mv muting functions (mute via i 2 c-bus) a mute tuned mute 60 -- db d v 44 , d v 41 dc offset voltage - 50 - +50 mv a mute radio mute (in combination with tuned mute) 80 -- db d v 44 , d v 41 dc offset voltage - 300 - +300 mv symbol parameter conditions min. typ. max. unit
september 1993 18 philips semiconductors preliminary speci?cation ice car radio TEA6821T high-cut control (see fig.22) t deemph control range of de-emphasis 50 - 80 m s v 18 - 0.75v 21 control voltage t deemph = 50 m s0 -- mv t deemph = 80 m s -- 300 - mv the nominal de-emphasis value can be changed to 75 m s with c 31 , c 32 = 10 nf. voltage controlled oscillator the vco is adjusted by means of a digital auxiliary pll. f osc oscillator frequency range 450 456 462 khz noise blanker interference detection at pin 50 level unweighted or mpxout (pin 47) t sup interference suppression time - 40 50 m s f c high-pass input ?lter for interference pulse, 2nd order 3 db frequency 150 200 250 khz iac control i 51 charge current (into 4 v) 5.0 10 18 m a discharge current (from 8.5 v) - 0.5 - 1.0 - 1.8 ma v pulse trigger sensitivity t pulse = 10 m s -- 20 mv d v dc (pin 51) trigger threshold measured with f int = 250 khz v noise (pin 46) = 10 mv - 200 - mv v tr (pin 46) v dc (pin 51) = 7.7 v - 10 - mv d v dc (pin 51) v noise (pin 46) = 100 mv - 2.3 - v v tr (pin 46) v dc (pin 51) = 6.7 v - 100 - v i os gate input offset current at pins 31 and 32 during suppression pulse duration - 20 50 na symbol parameter conditions min. typ. max. unit
september 1993 19 philips semiconductors preliminary speci?cation ice car radio TEA6821T notes to the characteristics 1. by changing the value of the input resistor at pin 12 the mpx input can be adapted to the level of the fm demodulator output (see fig.20). a 3rd order low-pass filter f g = 90 khz at the mpx input provides extra 190 khz aci suppression. for am the vco is switched off. interference gate at mpx demodulator outputs. 2. 3. 4. 5. 6. 7. a 2 v 0 signal () at 1 khz () v 0 spurious () at 1 khz () ---------------------------------------------------------------------- - f s 2 x 10 khz () 19 khz C = ; = a 3 v 0 signal () at 1 khz () v 0 spurious () at 1 khz () ---------------------------------------------------------------------- - f s 313khz () 38 khz C = ; = a 57 ari () v 0 signal () at 1 khz () v 0 spurious () at 1 khz 23 hz () -------------------------------------------------------------------------------------------------- - = a 67 v 0 signal () at 1 khz () v 0 spurious () at 9 khz () ------------------------------------------------------------------------ f s 238khz () 67 khz C = ; = a 114 v 0 signal () at 1 khz () v 0 spurious () at 4 khz () ------------------------------------------------------------------------ f s 110 khz 3 38 khz () C = ; = a 190 v 0 signal () at 1 khz () v 0 spurious () at 4 khz () ------------------------------------------------------------------------ f s 186 khz 5 38 khz () C = ; =
september 1993 20 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.8 test circuit fm mixer. fig.9 test circuit if amplifier. fig.10 test circuit limiter gain.
september 1993 21 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.11 signal and noise of muted mpx voltage. fig.12 signal and noise of unmuted mpx voltage.
september 1993 22 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.13 level unweighted voltage (typical curve). fig.14 adjustment range level unweighted voltage.
september 1993 23 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.15 muting dependence on adjust of level unweighted voltage (typical curve). fig.16 typical mute voltage as function of fm if 2 voltage.
september 1993 24 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.17 adjustment range mute voltage. fig.18 test circuit am mixer.
september 1993 25 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.19 signal, noise and distortion of am af output voltage and am level voltage (typical curve).
september 1993 26 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.20 adaption of mpx input to fm-demodulator output level by variation of the input resistor. fig.21 channel separation as function of control voltage.
september 1993 27 philips semiconductors preliminary speci?cation ice car radio TEA6821T fig.22 high-cut as function of control voltage. i 2 c-bus specification and i 2 c-bus controlled functions i 2 c-bus speci?cation the standard i 2 c-bus specification is expanded by the following definitions. structure of the i 2 c-bus logic: slave transceiver with auto increment and expansion to switch a direct transfer of all transmissions to an output for the radio front end ic (tea6810t respectively tea6811t). subaddresses are not used. data transfer to the TEA6821T data sequence: address byte 1 byte 2 the data transfer has to be only in this order. the transfer direction of the data bytes is defined by the lsb of the address. the data becomes valid at the output of the internal latches with the acknowledge of each byte. a stop condition after any byte can shorten transmission times. when writing to the transceiver by using the stop condition before completion of the whole transfer: the remaining bytes will contain the old information if the transfer of a byte was not completed, this byte is lost and the previous information is available. data transfer to an output of the front end ic. a data bit in the transceiver of the TEA6821T enables or disables a direct transfer of all transmissions to an interface stage for the front end ic. for a transmission to the front end ic the address and the data format of the front end ic has to be used. hint: the pull-up resistors for the front end interface (pins 6 and 7) should not be connected to the 5 v supply voltage of the front end ic, otherwise a bus pull-down (pin 53) can occur during switching off the front end supply when the interface stage is enabled. data transfer to the if ic (TEA6821T) is independent of the state of interface stage for the front end ic.
september 1993 28 philips semiconductors preliminary speci?cation ice car radio TEA6821T general speci?cation i 2 c-bus data bus address of the TEA6821T 1100 001x subaddress not used hardware (pin) programmable address bits not available default settings by power-on reset radio mute and 40 ms if count time is enabled, all other bits are random data to be received by the ic data byte 1 bit 0 switch for mono: bit 0 = 1; stereo: bit 0 = 0 bit 1 lsb reference frequency for synthesizer; see table 1 bit 2 reference frequency for synthesizer; see table 1 bit 3 msb reference frequency for synthesizer; see table 1 bit 4 tuning mute, bit 4 = 1: off; bit 4 = 0: on bit 5 sds/sdr hold, bit 5 = 1: off; bit 5 = 0: on bit 6 radio mute, bit 6 = 1: off; bit 6 = 0: on bit 7 i 2 c-bus to front end, bit 7 = 1: enabled; bit 7 = 0: disabled data byte 2 bit 0 am/fm, bit 0 = 0: am; bit 0 = 1: fm bit 1 divider for am mixer, bit 1 = 0: division by 2; bit 1 = 1: division by 6 bit 2 measure time if count, bit 2 = 0: 40 ms; bit 2 = 1: 4 ms bit 3 sdr off, bit 3 = 0: sdr off; bit 3 = 1: sdr on bit 4 not used bit 5 not used bit 6 not used bit 7 not used data to be transmitted by the ic data byte 1 (1) bit 0 lsb level information bit 1 level information bit 2 msb level information bit 3 lsb multipath information bit 4 multipath information bit 5 msb multipath information bit 6 bit 6 = 1: stereo pilot presence bit 7 not used
september 1993 29 philips semiconductors preliminary speci?cation ice car radio TEA6821T note 1. the a/d conversion for multipath and level will be done while a transmission of any address to the i 2 c-bus. table 1 reference frequency setting in byte 1 reference frequency generation; note 1 note 1. all specified frequencies are valid for a crystal oscillator frequency of 61.5 mhz. data byte 2 bit 0 lsb of the if-counter bit 1 if-counter bit 2 if-counter bit 3 if-counter bit 4 if-counter bit 5 if-counter bit 6 if-counter bit 7 msb of the if-counter bit 3 bit 2 bit 1 reference frequency 0 0 0 3 khz 0 0 1 5 khz 0 1 0 10 khz 0 1 1 15 khz 1 0 0 25 khz 1 0 1 50 khz 1 1 0 not de?ned 1 1 1 not de?ned division ratio reference frequency (khz) 20500 3 12300 5 6150 10 4100 15 2460 25 1230 50
september 1993 30 philips semiconductors preliminary speci?cation ice car radio TEA6821T output signal of reference frequency divider if-counter; note 1 note 1. counting windows am: 4 ms, (40 ms); fm: 40 ms, 4 ms counting resolution am: 250 hz, (25 hz); fm: 5 khz, 50 khz if-prescaler am: division by 1; fm: division by 200 the if-count windows are valid for a crystal oscillator frequency of 61.5 mhz. the fm/am switching is done by bit 0 of byte 2 of the received data of the ic. the if-counter operates continuously. the if-counter and window-counter will be resetted when the i 2 c-bus logic detects the address of the ic. this disables changes in the latches for the if-count, while reading this value. if the transmission to the front end ic will be disabled after the synthesizer loop of the tea6811t front end ic has locked for a new frequency, the if-count will be available after the set measuring time. the if-counter starts at 0. the if-counter output are the 8 least significant bits of the counting result. symbol parameter min. typ. max. unit c 10-4, c 11-4 output capacitance -- 4pf r 10-52, r 11-52 output resistance 800 1000 1200 w v 10-11 differential output voltage (peak-to-peak value) 0.3 0.4 0.5 v v 10-4, v 11-4 single-ended output voltage (peak-to-peak value) 0.15 0.2 0.3 v symbol parameter min. unit v 33-34 if-counter sensitivity for am, m = 0 200 m v v 37-35 if-counter sensitivity for fm 200 m v fig.23 if-counter structure.
september 1993 31 philips semiconductors preliminary speci?cation ice car radio TEA6821T a/d converters for level and multipath voltage symbol parameter min. typ. max. unit a/d converter for fm level information the fm level information v 50-3 is a/d converted with 3 bit d v 50-4 ad conversion step size - 6 - db/step fm stop d v stop variation of stop level as function of v 42-4 - 30 - db/v a/d converter for am level information the am level information v 49-4 is a/d converted with 3 bit d v 49-4 ad conversion step size - 6 - db/step am stop d v stop variation of stop level as function of v 43-4 - 30 - db/v a/d converter for multipath information the multipath information v 40-4 is a/d converted with 3 bit covering an if 2 amplitude modulation range 0.15 m 0.9; f mod =20khz m multipath conversion step 0 --- % multipath conversion step 1 - 15 - % multipath conversion step 2 - 30 - % multipath conversion step 3 - 40 - % multipath conversion step 4 - 50 - % multipath conversion step 5 - 58 - % multipath conversion step 6 - 66 - % multipath conversion step 7 - 74 - %
september 1993 32 philips semiconductors preliminary speci?cation ice car radio TEA6821T table 2 equivalent pin circuits and pin voltages. pin no. pin name dc voltage (v) internal circuit am fm 1 qdet1 4.0 4.0 2 qdet2 4.0 4.0 3 tswitch open 0/v 21 4 gnd 5v p5 5.0 5.0 6 hfbus1 5.0 5.0
september 1993 33 philips semiconductors preliminary speci?cation ice car radio TEA6821T 7 hfbus2 5.0 5.0 8 xtal1 4.1 4.1 9 xtal2 4.1 4.1 10 f refp 4.9 4.9 11 f refn 4.9 4.9 pin no. pin name dc voltage (v) internal circuit am fm
september 1993 34 philips semiconductors preliminary speci?cation ice car radio TEA6821T 12 i ref 4.3 4.3 13 fmifin1 2.3 2.3 14 fmifin2 2.3 2.3 15 tsdr 0.7 - 5.5 0.7 - 5.5 pin no. pin name dc voltage (v) internal circuit am fm
september 1993 35 philips semiconductors preliminary speci?cation ice car radio TEA6821T 16 tsds 0.7 - 5.5 0.7 - 5.5 17 v sds 3.0 - 5.5 3.0 - 5.5 18 v sdr 3.0 - 5.5 3.0 - 5.5 pin no. pin name dc voltage (v) internal circuit am fm
september 1993 36 philips semiconductors preliminary speci?cation ice car radio TEA6821T 19 fmif2out1 8.5 8.5 20 fmif2out2 8.5 8.5 21 v ref 5.1 5.1 pin no. pin name dc voltage (v) internal circuit am fm
september 1993 37 philips semiconductors preliminary speci?cation ice car radio TEA6821T 22 amif2out1 8.5 8.5 23 amif2out2 8.5 8.5 24 fmamdec 3.0 3.0 25 phasedet 3.0 - 7.0 3.0 - 7.0 pin no. pin name dc voltage (v) internal circuit am fm
september 1993 38 philips semiconductors preliminary speci?cation ice car radio TEA6821T 26 pildet 0.7 0.7 - 7.0 27 fmam10.7 3.0 3.0 28 v pif 8.5 8.5 29 fmifampout 6.0 6.0 30 afgnd 3.6 3.6 pin no. pin name dc voltage (v) internal circuit am fm
september 1993 39 philips semiconductors preliminary speci?cation ice car radio TEA6821T 31 deemphr 2.3 2.3 32 deemphl 2.3 2.3 33 amif2in1 2.7 0.7 34 amif2in2 2.7 0.7 pin no. pin name dc voltage (v) internal circuit am fm
september 1993 40 philips semiconductors preliminary speci?cation ice car radio TEA6821T 35 fmin2 0.7 2.7 36 dcfeed 2.7 2.7 37 fmin1 0.7 2.7 38 leveladj 2.6 2.6 39 c afc 1.0 - 2.2 1.0 - 7.0 pin no. pin name dc voltage (v) internal circuit am fm
september 1993 41 philips semiconductors preliminary speci?cation ice car radio TEA6821T 40 mpbuf 0.7 - 6.0 0.7 - 6.0 41 outleft 3.6 3.6 42 fmstop 0 - 5.2 0 - 5.2 43 rds/amstop 0 - 5.2 3.0 pin no. pin name dc voltage (v) internal circuit am fm
september 1993 42 philips semiconductors preliminary speci?cation ice car radio TEA6821T 44 outright 3.6 3.6 45 mpxin 2.8 2.8 46 iac in 00 47 mpxout 0 3.0 pin no. pin name dc voltage (v) internal circuit am fm
september 1993 43 philips semiconductors preliminary speci?cation ice car radio TEA6821T 48 amafout 3.7 4.8 49 v mutaml 1.0 - 5.5 1.0 - 5.5 50 levelunweig 1.0 - 7.0 1.0 - 7.0 51 i accontr 0 6.0 52 v pdig 5.0 5.0 pin no. pin name dc voltage (v) internal circuit am fm
september 1993 44 philips semiconductors preliminary speci?cation ice car radio TEA6821T 53 sda 5.0 5.0 54 scl 5.0 5.0 55 busgnd 0 0 56 v p8.5 8.5 8.5 pin no. pin name dc voltage (v) internal circuit am fm
september 1993 45 philips semiconductors preliminary speci?cation ice car radio TEA6821T package outline unit a 1 a 2 a 3 b p cd (1) e (2) (1) eh e ll p qz y w v q references outline version european projection issue date iec jedec eiaj mm inches 0.3 0.1 3.0 2.8 0.25 0.42 0.30 0.22 0.14 21.65 21.35 11.1 11.0 0.75 15.8 15.2 1.45 1.30 0.90 0.55 7 0 o o 0.1 0.1 dimensions (inch dimensions are derived from the original mm dimensions) 1.6 1.4 sot190-1 96-04-02 97-08-11 w m q a a 1 a 2 b p d h e l p q detail x e z e c l v m a x (a ) 3 a y 56 29 28 1 pin 1 index 0.012 0.004 0.12 0.11 0.017 0.012 0.0087 0.0055 0.85 0.84 0.44 0.43 0.0295 2.25 0.089 0.62 0.60 0.057 0.051 0.035 0.022 0.004 0.2 0.008 0.004 0.063 0.055 0.01 0 5 10 mm scale vso56: plastic very small outline package; 56 leads sot190-1 a max. 3.3 0.13 note 1. plastic or metal protrusions of 0.3 mm maximum per side are not included. 2. plastic interlead protrusions of 0.25 mm maximum per side are not included.
september 1993 46 philips semiconductors preliminary speci?cation ice car radio TEA6821T soldering introduction there is no soldering method that is ideal for all ic packages. wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. however, wave soldering is not always suitable for surface mounted ics, or for printed-circuits with high population densities. in these situations reflow soldering is often used. this text gives a very brief insight to a complex technology. a more in-depth account of soldering ics can be found in our ic package databook (order code 9398 652 90011). re?ow soldering reflow soldering techniques are suitable for all vso packages. reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. several techniques exist for reflowing; for example, thermal conduction by heated belt. dwell times vary between 50 and 300 seconds depending on heating method. typical reflow temperatures range from 215 to 250 c. preheating is necessary to dry the paste and evaporate the binding agent. preheating duration: 45 minutes at 45 c. wave soldering wave soldering techniques can be used for all vso packages if the following conditions are observed: a double-wave (a turbulent wave with high upward pressure followed by a smooth laminar wave) soldering technique should be used. the longitudinal axis of the package footprint must be parallel to the solder flow. the package footprint must incorporate solder thieves at the downstream end. during placement and before soldering, the package must be fixed with a droplet of adhesive. the adhesive can be applied by screen printing, pin transfer or syringe dispensing. the package can be soldered after the adhesive is cured. maximum permissible solder temperature is 260 c, and maximum duration of package immersion in solder is 10 seconds, if cooled to less than 150 c within 6 seconds. typical dwell time is 4 seconds at 250 c. a mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. repairing soldered joints fix the component by first soldering two diagonally- opposite end leads. use only a low voltage soldering iron (less than 24 v) applied to the flat part of the lead. contact time must be limited to 10 seconds at up to 300 c. when using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 c.
september 1993 47 philips semiconductors preliminary speci?cation ice car radio TEA6821T definitions life support applications these products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify philips for any damages resulting from such improper use or sale. purchase of philips i 2 c components data sheet status objective speci?cation this data sheet contains target or goal speci?cations for product development. preliminary speci?cation this data sheet contains preliminary data; supplementary data may be published later. product speci?cation this data sheet contains ?nal product speci?cations. limiting values limiting values given are in accordance with the absolute maximum rating system (iec 134). stress above one or more of the limiting values may cause permanent damage to the device. these are stress ratings only and operation of the device at these or at any other conditions above those given in the characteristics sections of the speci?cation is not implied. exposure to limiting values for extended periods may affect device reliability. application information where application information is given, it is advisory and does not form part of the speci?cation. purchase of philips i 2 c components conveys a license under the philips i 2 c patent to use the components in the i 2 c system provided the system conforms to the i 2 c specification defined by philips. this specification can be ordered using the code 9398 393 40011.

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