SA3370 SILAN | Alldatasheet

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HANGZHOU SILAN MICROELECTRONICS CO.,LTD Rev: 1.0 2005.02.03 Http: www.silan.com.cn Page 1 of 4 BLOCK DIAGRAM ABOSOLUTE MAXIMUM RATINGS (Ta mb=25°C) Characteristics Symbol Rating Unit Maximum Supply Voltage VCCm ax 16 V Lamp Driving Current IL 40 mA Allowable Power Dissipation Pd max 520 mW Operating Temperature Topr ­20~+70 °C Storage Temperature Tstg ­40~+125 °C Recommended Supply Voltage VCC 6.5 ~ 14 V Input Signal Voltage VIN 200 ~300 mV PLL FM MULTIPLEXER STEREO DEMODULATOR ZIP­16 DESCRIPTIONS The SA3370 is a multiplex IC for FM car stereo. It integrates two functions: stereo noise control and high­cut control.

FEATURES

  • Low distortion factor * Power supply ripple rejection * Wide operating voltage range

APPLICATIONS

  • FM car stereo

ORDERING INFORMATION

SA3370 ZIP­16 Main High cut

HANGZHOU SILAN MICROELECTRONICS CO.,LTD Rev: 1.0 2005.02.03 Http: www.silan.com.cn Page 2 of 4 ELECTRICAL CHARACTERISTICS (At Ta mb=25°C, VCC=10V, VIN=300mV, f=1 kHz, L+R=90%, pilot=10%, see specified test circuit.) Characteristics Symbol Test condition Min. Typ. Max. Unit Quiescent Current ICCO ­­ 21 27 mA Channel Separation Sep 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 140 200 280 mV S/N Ratio S/N 70 78 ­­ dB Input Resistance (pin3) RIN ­­ 20 ­­ kΩ SCA Rejection Ratio SCArej ­­ 80 ­­ dB Allowable Input Voltage VIN THD=1%, Rg=20k Ω 700 800 ­­ 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) 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 ­­ 6.8 ­­ V Channel Balance CH Ba ­­ 0.5 1.5 dB PIN CONFIGURATIONS VCC IN SEP Adj HC constant LOUT ROUT HCC SNC GND STLED FILTER1 FILTER1 FFOUT FILTER2 FILTER2 OSC PIN DESCRIPTIONS Pin no. Pin name Description 1 VCC Power supply.

2 IN Composite input

3 SEP adj Separation adjust

(To be continued)

HANGZHOU SILAN MICROELECTRONICS CO.,LTD Rev: 1.0 2005.02.03 Http: www.silan.com.cn Page 3 of 4 (Continued) Pin no. Pin name Description

4 HC constant High cut constant

5 LOUT Left channel output

6 ROUT Right channel output

7 HCC When a voltage of 7.5V or higher is applied to this pin, VCO stopped

8 SNC Forced monaural mode when this pin is connected to ground

9 GND Ground

10 STLED Open­collector output can directly drive LED

11, 12 Filter1 Pilot detector low­pass filter

13 FFOUT 19KHz out

14, 15 Filter2 Ripple Filter

16 OSC Connected a semi­fixed resister

  1. SNC (stereo noise control) and HCC (high­cut control) The SA3370 has SNC and HCC terminals for improved S/N ratios when operating in weak radio fields. By adjusting. The S/N ratios will be improved through the SNC (stereo noise control) and HCC (high­cut control) terminals. 2. Muting function Muting in the neighborhood of 37dB are feasible by utilizing HCC functions as muting functions. 3. VCO stopped When applying a voltage not less than 7V to the HCC terminal, VCO will be stopped and the circuit will work in monaural mode. 4. Separation control The separation of SA3370 can be changed by the external semi­resistor. TEST CIRCUIT

HANGZHOU SILAN MICROELECTRONICS CO.,LTD Rev: 1.0 2005.02.03 Http: www.silan.com.cn Page 4 of 4 TYPICAL APPLICATION CIRCUIT 3.3k 3.3k LOUT ROUT HCC SNC Filter1 Filter1 STLED OSC Filter2 Filter2 HC constant SEP adj PACKAGE OUTLINE ZIP­16 UNIT: mm