TCA3189 STMICROELECTRONICS | Alldatasheet
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ky 7] SGS-THOMSON ‘~~ MICROELECTRONICS TCA3189 0,8 Ee OE NOY FM-IF HIGH QUALITY RADIO SYSTEM EE ee TS TEM @ EXCEPTIONAL LIMITING SENSITIVITY. @ DIRECT ORIVE OF FIELD STRENGTH © VERY LOW DISTORTION (0.1% - DOUBLE METER TUNED DETECTOR COIL) The TCA3189 is a monolithic integrated circuit © IMPROVED S/N RATIO in a 16-lead dual in-line plastic package, which provides a complete subsystem for amplification EER NALLY PROGRAMMABLE AUDIO of t9.7MHz FM signal in Hi-Fi, car-radios and communications receivers. © ON CHANNEL STEP FOR SEARCH CON- TROL . © PROGRAMMABLE AGC VOLTAGE AND — AFC FOR TUNER . DIP-16 Plastic @ INTERCHANNEL MUTING (SQUELCH) (0.25) © DEVIATION MUTING ORDERING NUMBER: TCA3189 © DIRECT DRIVE OF TUNING METER annie ABSOLUTE MAXIMUM RATINGS vy, Supply voltage 16 OV Io Output current (from pin 15) 2 mA Pio Total power dissipation at Tamy < 70°C 800 mW Tita Storage temperature 6510150 °C Top Operating temperature -25to 8 °C Double tuned detector coil oo t ir! ane Qe 3 3k = yf Le aoe ws i viet ea 3188 Soares YT rift Jor - (im (ade = ~ Sone te na ae June 1988 4 dune 1968 tt 243
{top view) DELAY iweut fh v5 face contro. DELAYED BYPASS 2 15) OLED BYPASS 3 14) GRoUNO FIELD STRENGTH orouno a pp Meee Ne Mure input 5 12 fl Mute output aupioouTPuTlé 1 fl SuppLy vouTagE Age OUTPUT 7 iP REF BIAS. guano ouTeuT[e 9) QUAD.iNPUT $2286 BLOCK DIAGRAM os rosea $ ITT |_cxto08e auaoratune 2224) \\ i to ireanat | INPUT me REFERENCE 618s, RecuaTons@ = our —*G) LEAT ar are ae awe ame AMPL 1_| J oerecror \\ [ rr ew @4' Secor Oto, 20nF Bret ‘ratios our | Tevet TevEL Tevet Cever 1 [anon © | Joctecron| foerecroa} foerecton oereeroaf] |S) ome u 7 ue: wuts a 7 (SQUELCH) 22Kn MUTIN ‘CONTROL © SENS aMaL oetaveo DELAYED THING TUTE (Saue Tony i heres ane “70.0 foc rer ©@ RF AGC CIRCUIT CIRCUIT OS TARE suasinare meen Gt Oyama weer —° TRSe Snot SUP (ogre eiRcurs - —_= on tranner Srack oe sioR suns (Pina) 214 ky SGS:‘THomson Yh. ithoaecreswics 244
Rtn pap Thermal resistance junction-ambient max. 100 °C/W ELECTRICAL CHARACTERISTICS (Refer to the test circuit, V, = 12V, Tamp= 25°C) ee rep tet <3ERKAG) vi Voltage at the IF amplifier input [12 | 19 | 24 | v | No signal input, non muted Ds pepe To] vi Input limiting voltage (-3 4B) f= 10.7 MHz atpin 1 fm= 1 KHz A= © 75 KHz uv Vo Recovered audio voltage (pin6) | V;> 50 nV fo = 10.7 MHz f= 1 KHz Af= © 75 KHz 325 mv (sewn [woe ee TT] ‘AMR Amplitude modulation rejection | V\\= 100 mV f= 10.7 MHz fn = 1 KHz Af= + 75 KHz AM mod. 30% Aly AFC control sl A ay control slope ey Viz Onchannel step (deviation mute) | V\\=100mV | foev, < Vv +40 KHz fo 10.7MHz | fpev,> v £40 KHz YA. sitzonecreomes 245
Fig. 1 - Single tuned detector coil en mo zw | aaa coms a ow sernnn Sf | | abou eee os ot a Sona () , = oofit hol 3 TCA 3189 Do IF ge, cf Bun0— Satin PS HES Pa omar Bivona ies Fig. 2 - Limiting and noise Fig. 3 ~ Deviation mute Fig. 4 - Recovered audio characteristics threshold vs. Ry.10 and muting action vs. input Tet om | ae ; ee he eee ei ol ete a oa a QooS NG SSEEEE Ae at Vadis wel cml i enna Z : De ww Ku a ar ‘ en ne Fig. 5 - AFC characteristics Fig. 6 - AGC voltage for FM Fig. 7 - Field strength and tuner vs. input level tuning meter output vs. eos i input level ty ot wl rd vos su a tA fg : LZ. ; mo aaeee aeueeaen “a (a7 SGS-THOMSON IA, sebe9 secrets 246