SA3375 SILAN | Alldatasheet
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Technical content
HANGZHOU SILAN MICROELECTRONICS CO.,LTD Rev: 1.0 2005.02.03 Http: www.silan.com.cn Page 1 of 5 BLOCK DIAGRAM ABOSOLUTE MAXIMUM RATINGS (Ta mb=25°C) Characteristics Symbol Ratings Unit Maximum Supply Voltage VCCm ax 16 V Lamp Driving Current ILmax 40 mA Allowable Power Dissipation Pdmax 520 mW Operating Temperature Topr 20~+70 °C Storage Temperature Tstg 40~+125 °C PLL FM MULTIPLEXER STEREO DEMODULATOR ZIP16
DESCRIPTION
The SA3375 is a multiplex IC for FM car stereos. It integrates two functions: skipnoise prevention and pilot canceling.
FEATURES
- Low distortion * Power supply ripple rejection * Wide operating voltage range
APPLICATIONS
- FM stereo receivers
ORDERING INFORMATION
SA3375 ZIP16
HANGZHOU SILAN MICROELECTRONICS CO.,LTD Rev: 1.0 2005.02.03 Http: www.silan.com.cn Page 2 of 5 ELECTRICAL CHARACTERISTICS (At Ta mb=25°C, VCC=10V, VIN=300mV, f=1 kHz, L+R=90%, pilot=10%, Rg=20kΩ ˈsee specified test circuit.) Characteristics Symbol Test condition Min. Typ. Max. Unit Recommended Supply Voltage VCC 6.5 14 V Input Signal Voltage VI 200 300 mV Quiescent Current ICCO 22 28 mA Channel Separation Sep SW1: B 40 50 dB Monaural Distortion Factor Mono THD mono=300mV 0.05 0.2 % Stereo Distortion Factor ST THD main 0.05 0.2 % Lamp Lighting Level VL L+R=90%, pilot=10% 60 85 120 mV Hysteresis Hy 3 6 dB Capture Range CR Pilot=30mV ±3 % Output Signal Level VO Sub 150 215 300 mV Rg=20kΩ 68 74 dB S/N Ratio S/N Rg=10 kΩ 70 78 dB Input Resistance (pin3) ri 20 kΩ SCA Rejection Ratio SCArej 80 dB THD=1%, Rg=20kΩ 700 900 mV Allowable Input Voltage vi THD=1%, Rg=10kΩ 450 mV SNC Output Attenuation Att SNC V8=0.6V, LR=90%, pilot=10% 8.5 3.0 0.3 dB SNC Output Voltage VO sub V8=0.1V, LR=90%, pilot=10% 5 mV Att HCC (1) V7=0.6V, L+R=90%, pilot=10% 15.0 9.0 0.5 dB HCC Output Attenuation Att HCC (2) V7=1V, L+R=90%, pilot=10% 2.0 0 dB Power Supply Ripple Rejection Rr 35 dB VCO Stopping Voltage VCO stop 7.3 V Channel Balance CH Ba 0.5 1.5 dB Pilot Cancellation Factor CLp 20 25 dB PIN CONFIGURATIONS
HANGZHOU SILAN MICROELECTRONICS CO.,LTD Rev: 1.0 2005.02.03 Http: www.silan.com.cn Page 3 of 5 PIN DESCRIPTIONS Pin no. Pin name Description 1 VCC Power supply.
2 IN Composite input
3 SEP Adj Connected to se mifixed resister
4 HC constant Connecter to capacitor
5 LOUT Out of L channel
6 ROUT Out of R channel
7 HCC High – cut control
8 SNC Stereo noise control
9 GND Ground
10 STLED Stereo lamp
11, 12 FILTER1 Filter of pilot detector
13 CLP Pilot cancel adjust
14, 15 FILTER2 Filter of phase comparator
16 OSC VCO OSC
- SNC and HCC The SA3375 has SNC (stereo noise control) and HCC (highcut 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)ˈVCO will be stopped and SA3375 will work in monaural mode.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD Rev: 1.0 2005.02.03 Http: www.silan.com.cn Page 4 of 5 TEST CIRVUIT 1 2 3 5 6 7 8 9 10 11 12 14 SA3375 4 13 15 16 +VCC 100 Separation adjust Composite input 1500p 4.7 SW1A B A B VR Rg 0.047 100 2.2k SW2 AB C 0.6V 0.1V 3.0V +VCC 0.022 3300p 100K Pilot cancel asjust 3.3 1000p 12k 10k LOUT ROUT VCC IN SEP adj HC constant LOUT ROUT HCC SNC GND STLED Filter1 Filter1 CLP Filter2 Filter2 OSC TYPICAL APPLICATION CIRCUIT
HANGZHOU SILAN MICROELECTRONICS CO.,LTD Rev: 1.0 2005.02.03 Http: www.silan.com.cn Page 5 of 5 PACKAGE OUTLINE ZIP16 UNIT: mm