KA8507B

COMPANDER KA8507B INTRODUCTION KA8507B is a automatic gain control system that is used for dynamic range compression and expansion. According to the companding the signal, this can reduce the noise components. KA8507B 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 KA8507B KA8507BD Package 20−DIP−300A 20−SOP−375 Operating Temperature −20°C to +70°C 1 KA8507B COMPANDER BLOCK DIAGRAM AGIC 5 CRC 6 Rectifier Bypath Variable Resistor DI 4 CO 3 FI 2 Filter Amp Compressor Output Buffer + 1 Fo Compressor Mute 5.1K 3.3K CPI7 Summing Amp 11 Limiter Logic CB 13 Bypath EMUTE 12 CMUTE CPI+ 8 + BYPATH EPI- 16 Variable Resistor Summing Amp EPI+ 15 + Rectifier Expandor Mute Bias Circuit 20 Vcc 17 DO 18 ERC 19 EO 9 CB 14 EB 10 GND PIN CONFIGURATION FO FI CO DI AGIC CRC CPICPI + CB GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 Vcc EO ERC DO EPIEPI+ EB EMUTE BYPATH CMUTE KA8507B 16 15 14 13 12 11 2 COMPANDER KA8507B PIN DESCRIPTION Pin No 1 2 3 4 5 6 7 8 9 10 Symbol FO FI CO DI AGIC CRC CPI − CPI CB GND Description Filter Amp Output Filter Amp Input Compressor Output Data Input AC Gain Infinity Capacitor Compressor Rectifier Capacitor Compressor Inverting Input Compressor Non-Inverting Input Compressor Reference Bias Ground Pin No 11 12 13 14 15 16 17 18 19 20 Symbol CMUTE ...