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| SA3375 PLL FM MULTIPLEXER STEREO DEMODULATOR DESCRIPTION The SA3375 is a multiplex IC for FM car stereos. It integrates two functions: skip-noise prevention and pilot canceling. FEATURES * Low distortion * Power supply ripple rejection * Wide operating voltage range ZIP-16 APPLICATIONS * FM stereo receivers ORDERING INFORMATION Device SA3375 Package ZIP-16 BLOCK DIAGRAM ABOSOLUTE MAXIMUM RATINGS (Tamb=25C) Characteristics Maximum Supply Voltage Lamp Driving Current Allowable Power Dissipation Operating Temperature Storage Temperature Symbol VCCmax ILmax Pdmax Topr Tstg Ratings 16 40 520 -20~+70 -40~+125 Unit V mA mW C C HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Rev: 1.0 2005.02.03 Page 1 of 5 SA3375 ELECTRICAL CHARACTERISTICS (At Tamb=25C, VCC=10V, VIN=300mV, f=1 kHz, L+R=90%, pilot=10%, Rg=20k see specified test circuit.) Characteristics Recommended Supply Voltage Input Signal Voltage Quiescent Current Channel Separation Monaural Distortion Factor Stereo Distortion Factor Lamp Lighting Level Hysteresis Capture Range Output Signal Level S/N Ratio Input Resistance (pin3) SCA Rejection Ratio Allowable Input Voltage SNC Output Attenuation SNC Output Voltage HCC Output Attenuation Power Supply Ripple Rejection VCO Stopping Voltage Channel Balance Pilot Cancellation Factor Symbol VCC VI ICCO Sep ST THD VL Hy CR VO S/N ri SCArej vi Att SNC VO sub THD=1%, Rg=20k THD=1%, Rg=10k V8=0.6V, L-R=90%, pilot=10% V8=0.1V, L-R=90%, pilot=10% Pilot=30mV Sub Rg=20k Rg=10 k SW1: B main L+R=90%, pilot=10% Mono THD mono=300mV Test condition Min. 6.5 200 -40 --60 --150 68 70 --700 --8.5 --15.0 -2.0 ---20 22 50 0.05 0.05 85 3 3 215 74 78 20 80 900 450 -3.0 --9.0 -35 7.3 0.5 25 Typ. Max. 14 300 28 -0.2 0.2 120 6 -300 -------0.3 5 -0.5 0 --1.5 -Unit V mV mA dB % % mV dB % mV dB dB k dB mV mV dB mV dB dB dB V dB dB Att HCC (1) V7=0.6V, L+R=90%, pilot=10% Att HCC (2) V7=1V, L+R=90%, pilot=10% Rr VCO stop CH Ba CLp PIN CONFIGURATIONS HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Rev: 1.0 2005.02.03 Page 2 of 5 SA3375 PIN DESCRIPTIONS Pin no. 1 2 3 4 5 6 7 8 9 10 11, 12 13 14, 15 16 Pin name VCC IN SEP Adj HC constant LOUT ROUT HCC SNC GND STLED FILTER1 CLP FILTER2 OSC Power supply. Composite input Connected to semi-fixed resister Connecter to capacitor Out of L channel Out of R channel High -cut control Stereo noise control Ground Stereo lamp Filter of pilot detector Pilot cancel adjust Filter of phase comparator VCO OSC Description FUNCTION DESCRIPTION 1. SNC and HCC The SA3375 has SNC (stereo noise control) and HCC (high-cut control) terminals for improving S/N ratios when operating in weak radio fields. 2. Pilot canceling circuit Canceling signal is a sawtooth wave obtained by integrating a square wave that is proportionate in amplitude to pilot level with C and R. 3. Separation adjustments The SA3375 by itself exhibits separation only in a 25 to 30 dB range. If a phase correction circuit is provided in the SA3375 input circuit, it can exhibit intrinsic separation characteristics, typically 50 dB. 4. VCO stopped When applying a voltage not less than 7 V to the HCC terminal (pin 7) work in monaural mode. VCO will be stopped and SA3375 will HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Rev: 1.0 2005.02.03 Page 3 of 5 SA3375 TEST CIRVUIT SA3375 HC constant SEP adj STLED ROUT Filter1 Filter1 Filter2 Filter2 15 1 0.022 3.3 1k 100K 12k 1000p 10k LOUT GND HCC OSC 16 SNC CLP 13 VCC 1 +VCC 100 Separation adjust A SW1 B Rg IN 2 3 2.2k 4 5 6 7 SW2 8 9 10 11 1 12 14 1K 4.7 Composite input 1500p LOUT 0.015 3.3k 3.3k 0.6V 0.1V 3.0V AB VR 0.047 100 AB C 1K +VCC 3300p Pilot cancel asjust ROUT 0.015 TYPICAL APPLICATION CIRCUIT HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Rev: 1.0 2005.02.03 Page 4 of 5 SA3375 PACKAGE OUTLINE ZIP-16 UNIT: mm HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Rev: 1.0 2005.02.03 Page 5 of 5 |
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