S1T8507C

COMPANDER INTRODUCTION S1T8507C is a automatic gain control system that is used for dynamic range compression and expansion. By companding the signal , this can reduce the noise components. S1T8507C includes compressor, expander, pre-amp, filter amp, limiter and mute/bypath logic. 20−DIP−300A FEATURES Wide Supply Voltage ( 2.4 to 7V ) Easy Gain Control Mute/Bypath Logic Data In/Out Pin 20−SOP−375 ORDERING INFORMATION Device S1T8507C01-D0B0 S1T8507C01-S0B0 Package 20−DIP−300A 20−SOP−375 Operating Temperature −20°C to +70°C S1T8507C 1 S1T8507C COMPANDER BLOCK DIAGRAM CPI- 7 3.3K 5.1K - CPI+ 8 + EPI- 16 EPI+ 15 + AGIC 5 Bypath CRC 6 Rectifier Variable Resistor Summing Amp CB Bypath Variable Resistor Rectifier 17 18 DO ERC DI CO 43 Compressor Output Buffer Compressor Mute FI 2 Filter Amp + - Limiter Logic Summing Amp Expandor Mute 19 EO Bias Circuit 9 14 10 CB EB GND 1 Fo 11 CMUTE 12 BYPATH 13 EMUTE 20 Vcc PIN CONFIGURATION FO 1 FI 2 CO 3 DI 4 AGIC 5 CRC 6 CPI- 7 CPI+ 8 CB 9 GND 10 KA8507 S1T8507C 20 Vcc 19 EO 18 ERC 17 DO 16 EPI15 EPI+ 14 EB 13 EMUTE 12 BYPATH 11 CMUTE 2 COMPANDER S1T8507C PIN DESCRIPTION Pin No Symbol Description 1 FO Filter Amp Output 2 FI Filter Amp Input 3 CO Compressor Output 4 DI Data Input 5 AGIC AC Gain Infinity Capacitor 6 CRC Compressor Rectifier Capacitor 7 CPI − Compressor Inverting Input 8 CPI + Compressor Non-Inverting Input 9 CB Compressor Reference Bias 10 GND Ground Pin No 11 12 13 14 15...