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1 e99215-te sony reserves the right to change products and specifications without prior notice. this information does not convey any licens e by any implication or otherwise under any patents or other right. application circuits shown, if any, are typical examples illustr ating the operation of the devices. sony cannot assume responsibility for any problems arising out of the use of these circuits. absolute maximum ratings (ta=25 c) ? supply voltage v cc 14 v ? operating temperature topr C10 to +60 c ? storage temperature tstg C50 to +125 c ? allowable power dissipation p d 700 mw (cxa1691bm) p d 1000 mw (cxa1691bs) recommended operating conditions supply voltage v cc 2 to 7.5 v (cxa1691bm) v cc 2 to 8.5 v (cxa1691bs) description cxa1691bm/bs is a one-chip fm/am radio ic designed for radio-cassette tape recorders. features ? small number of peripheral components. ? low current consumption (v cc =3 v) for fm : i d =5.8 ma (typ.) for am : i d =4.7 ma (typ.) ? built-in fm/am select switch. ? large output of af amplifier. v cc =6 v, eiaj output=500 mw (typ.) when load impedance 8 function fm section ? rf amplifier, mixer and osc (incorporating afc variable capacitor). ? if amplifier ? quadrature detection ? tuning led driver am section ? rf amplifier, mixer and osc (with rf agc) ? if amplifier (with if agc) ? detector ? tuning led driver af section ? electronic volume control ? fm muting structure bipolar monolithic ic fm/am radio cxa1691bm cxa1691bs 28 pin sop (plastic) 30 pin sdip (plastic) cxa1691bm/bs
2 cxa1691bm/bs block diagram cxa1691bm cxa1691bs 28 27 26 25 24 23 22 21 20 19 18 17 16 15 fm/am band select am if in fm if in nc meter if gnd afc agc afc agc det out af in ripple filter v cc af out gnd mute fm discri nf am osc afc fm osc reg out fm rf am rf in nc fm rf in fe gnd fm/am fe out vol 123456789 10 11 12 13 14 am if det agc tuning meter fm if am fe fm discriminator fm fe af power amp 28 27 26 25 24 23 22 21 20 19 18 17 16 15 fm/am band select am if in fm if in nc meter if gnd afc agc afc agc det out af in ripple filter v cc af out gnd gnd mute fm discri nf am osc afc fm osc reg out fm rf am rf in nc fm rf in fe gnd fm/am fe out vol 123456789 10 11 12 13 14 29 30 nc af power amp tuning meter fm discriminator am if det agc am fe fm fe fm if
3 cxa1691bm/bs standard circuit design data (the pin numbers in the parenthesis are for cxa1691bs.) voltage (v) no. symbol v cc =3 v v cc =6 v equivalent circuit description fm am fm am 1 (1, 2) 2 (3) 3 (4) 27 (28) 4 (5) 5 (6) 6 (7) 8 (9) 7 (8) mute fm discri nf af out vol cont am osc afc reg out fm osc 0000 2.18 2.70 4.88 5.43 1.5 1.5 3.0 3.0 1.5 1.5 3.0 3.0 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 * 1.25 * 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 2 1k 1.2k 3 27 v cc gnd 100 100 4 gnd 20k 80k 5 3.6k 6 8 1.25v (reg) 7 phase-shift circuit connect ceramic discriminator negative feedback pin power amplifier output pin connect variable resistor for electronic volume control. am local oscillation circuit afc variable capacitor pin regulator pin 1.25 v (typ.) fm local oscillation circuit
4 cxa1691bm/bs voltage (v) no. symbol v cc =3 v v cc =6 v equivalent circuit description fm am fm am 9 (10) 12 (13) 10 (11) 11 (12) 13 (14) 14 (15) 15 (16) 16 (17) 17 (18) 18 (19) fm rf fm rf in am rf in nc gnd (fe gnd) fm/am fe out band select am if in fm if in nc 1.25 1.25 1.25 1.25 0.3 0 0.3 0 1.25 1.25 1.25 1.25 0000 0000 0.36 0.2 0.36 0.2 0.84 0 0.88 0 0000 1.30 0 1.30 0 0000 9 3p 8k 1k 12 10 v cc am fm 220 14 15 gnd v cc 16 2k gnd 17 360 connect fm rf tuning coil fm rf input pin am rf input pin if output pin of fm and am. connect if filter. fm and am bands selection switch pin. during gnd it becomes am and during open it becomes fm. input pin of am if. input pin of fm if.
5 cxa1691bm/bs voltage (v) no. symbol v cc =3 v v cc =6 v equivalent circuit description fm am fm am 19 (20) 20 (21) 21 (22) 22 (23) 23 (24) 24 (25) 25 (26) 26 (27) 28 (29, 30) meter gnd afc/agc afc/agc det out af in ripple filter v cc gnd 1.6 1.6 4.5 4.5 0000 1.25 1.49 1.25 1.49 1.25 1.25 1.25 1.25 1.25 1.0 1.25 1.0 0000 2.71 2.71 5.4 5.4 3.0 3.0 6.0 6.0 0000 gnd 19 3 n 1.25v 22 21 23 33k 39k gnd 24 11k 4 4 82k gnd 25 17k 73k 90k v cc meter drive circuit (for tuning indicator) afc pin of w band. during am, it determines time constant of agc afc pin of j band. during am, it determines time constant of agc. detection output pin power amplifier input pin ripple filter power supply pin power gnd * the pin voltage of pin 6 during am, it is the same pin voltage of pin 22 (23) during j band and is the same pin voltage of pin 21 (22) during w band.
6 cxa1691bm/bs no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 item am circuit current fm circuit current fm front end voltage gain fm detection output level fm if knee level fm detection output distortion factor fm meter current am front end voltage gain am if voltage gain am detection output level am meter current am detection output distortion factor audio voltage gain audio distortion factor muting level symbol id1 id2 gv1 vd1 vd2 thd1 ib1 gv2 gv3 vd3 ib2 thd2 gv4 thd3 vd4 sw conditions 123456 abaaaa abaaba abaaba aa b a aa b a aa b a aa b a aaaaaa aaaaa aaaaa aaaaa aabbaa a b a b a b test point ia ia va vd vd vd im vb vd vd im vd ve ve ve conditions no signal, am no signal, fm v in1 =40 dbv, 100 mhz v in3 =90 dbv, 10.7 mhz (1 khz, 22.5 khz dev) v in3 =level at a point 3 db down from v in3 =90 dbv, 10.7 mhz (1 khz, 22.5 khz dev) v in3 =90 dbv, 10.7 mhz (1 khz, 75 khz dev) v in3 =60 dbv, 10.7 mhz v in2 =60 dbv, 1660 khz v in3 when 455 khz (1 khz, 30 % mod) output is C34 dbm v in3 =85 dbv, 455 khz (1 khz, 30 % mod) v in3 =85 dbv, 455 khz (1 khz, 30 % mod) v in2 =95 dbv, 1660 khz (1 khz, 30 % mod) v in3 =60 dbv, 10.7 mhz v in4 =C30 dbm, 1 khz distortion factor for 50 mw output v in3 =60 dbv, 10.7 mhz v in4 =C20 dbm, 1 khz muting level for 50 mw output v in4 =C20dbm, 1 khz attenuation for 60 dbv input with v in3 off min. typ. max. unit 4.8 10.0 ma 7.6 14.0 ma 32 39 46 db 39 77.5 155 mvrms 24 32 dbv 0.3 2.0 % 1.8 3.5 7.0 ma 15 22 29 db 14 20 27 dbv 39 77.5 155 mvrms 1.3 3.0 7.0 ma 0.6 2.0 % 27 31.5 36 db 0.9 2.5 % 81522db electrical characteristics (see the electrical characteristics test circuit, ta=25 c, v cc =6 v) 0 dbv=1 v
7 cxa1691bm/bs electrical characteristics test circuit ift 24p 2k 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 v in2 v in1 v in3 va vb 100 0.01 0.01 10 150 h 1 1 1 1 0.01 0.01 0.01 0.012 4.7 100 0.047 0.047 470 s2 b a 330 2k cf1 30p reg 150 43p 10p 1000p 30p 30p 100k 8p 24p osc afc b a s1 150 cf3 33k 33k 24k 24k 10 11 13 14 ve gnd v cc 8 15 16 17 18 19 20 21 22 23 25 24 26 27 28 5k a b s6 im vd v in4 s5 s4 s3 b b b a a a am/fm if out fe gnd fm in nc am in fm rf reg fm osc afc am osc vol nf fm discri mute band select am if in fm if in nc meter if gnd agc afc agc afc det out af in ripple v cc af out gnd cf1 : cf3 : ift : osc : am 455khz c.f. fm discriminator am 455khz ift am osc cxa1691bm 0.1 50k bpf 12
8 cxa1691bm/bs application circuit 1 1 3 4 5 2 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 25 24 26 27 28 am/fm if out fe gnd fm rf in nc am rf fm rf reg out fm osc afc am osc vol nf discri mute band select am if in fm if in nc meter if gnd afc agc afc agc det out af in ripple v cc af out gnd ant l1 c1 2p l2 c2 18p l3 c3 22p l4 c4 6p c5 10 c6 0.01 c7 1p r1 100k r3 150 s2 rv1 50k rv2 10k batt epj c21 220 10v c20 0.1 c18 470 6.3v c17 10 50v c19 0.1 c15 0.47 / 50v d1 c16 0.022 c14 10 50v c13 4.7 50v c12 10 50v r6 1k cf2 r5 330 cf1 t1 c11 100p r4 2.2k c10 0.01 s1 fm am bpf cxa1691bm cf3 c8 4.7 50v c22 0.1 application circuits shown are typical examples illustrating the operation of the devices. sony cannot assume responsibility fo r any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same .
9 cxa1691bm/bs application circuit 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 25 24 26 27 28 am/fm if out fe gnd fm rf in nc am rf fm rf reg out fm osc afc am osc vol nf discri mute band select am if in fm if in nc nc meter if gnd afc agc afc agc det out af in ripple v cc af out gnd gnd 29 30 ant c5 10 c6 0.01 c7 1p r1 100k c8 4.7 50 cf3 r3 150 l1 c1 2p l2 c2 18p l3 c3 22p l4 c4 6p rv1 50k r2 10k s2 batt epj c21 220 10v c20 0.1 c18 470 6.3v c17 10 50v c19 0.1 c15 0.47 / 50v d1 c16 0.022 c14 4.7 50v c13 10 50v c12 10 50v cf2 r5 330 cf1 t1 c11 100p r4 2.2k c10 0.01 s1 fm am bpf cxa1691bs r6 1k c22 0.1 1 2 application circuits shown are typical examples illustrating the operation of the devices. sony cannot assume responsibility fo r any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same .
10 cxa1691bm/bs coil data am osc core diameter ? 0.06 mm 2uew equivalent to l-5k7-h5 r12-1684x. mitsumi electric co., ltd. or 7trs-8441x toko co., ltd. fm rf fm osc am bar antenna bpf pfwe8 (88 to 108 mhz) soshin electric co., ltd. cf1 sfu-455b murata mfg. co., ltd. or bfcfl-455 toko co., ltd. cf2 sfe10.7ma5 murata mfg. co., ltd. cf3 cda10.7mc1 murata mfg. co., ltd. f (khz) 796 l (h) 1 to 3 270 q o 1 to 3 125 1 to 3 107 4 to 6 29 f (khz) 796 l (h) 650 primary 91 t secondary 20 t s 1 2 3 4 5 6 am ift core diameter ? 0.07 mm uew equivalent to 21k7-h5 r12-8558a. mitsumi electric co., ltd. or 7mc-7789n toko co., ltd. s 1 2 3 4 5 6 f 4mm f 0.6mm 4.5t f 4mm f 0.6mm 3.5t primary secondary number of widings (t) c o (pf) 1 to 3 180 q o 1 to 3 90 1 to 2 111 2 to 3 35 4 to 6 7 number of widings (t)
sony code eiaj code jedec code sop-28p-l04 package structure package material lead treatment lead material package mass 42/copper alloy solder plating epoxy resin 28pin sop (plastic) 18.8 ?0.1 + 0.4 15 28 0.45 0.1 1.27 9.3 2.3 ?0.15 + 0.4 0.1 ?0.05 + 0.2 0.5 0.2 0.2 ?0.05 + 0.1 7.6 ?0.1 + 0.3 10.3 0.4 14 m 0.24 sop028-p-0375 1 0.7g 0.15 sony code eiaj code jedec code 30pin sdip (plastic) 26.9 ?0.1 + 0.4 15 16 30 1.778 10.16 8.5 ?0.1 + 0.3 0.25 ?0.05 + 0.1 0?to 15 0.5 0.1 0.9 0.15 3.0 min 0.5 min 3.7 ?0.1 + 0.4 sdip-30p-01 sdip030-p-0400 1 package structure molding compound lead treatment lead material package mass epoxy resin plating copper alloy 1.8g solder/palladium 1.all mat surface type. two kinds of package surface: 2.all mirror surface type. package outline unit : mm cxa1691bm cxa1691bs cxa1691bm/bs 11 note : palladium plating this product uses s-pdppf (sony spec.-palladium pre-plated lead frame).

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