KA8512 - Samsung

KA8512 COMPANDOR

Pin No 1 Symbol VREF Description It is a voltage reference (VREF=1V) used for supplying a constant voltage to the compressor and expander of compandor. It is SUM AMP input terminal of expander. The voice signal recoverd after 2 EPI the demodulation waveform from the receiver passed through the 2’ nd order low pass filter enters this terminal. This terminal i.

Features

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• Operating voltage range : 2 ~ 6V Included ALC circuit Easy gain control to use external component Included mute function 14-SOP-225B ORDERING INFORMATION Device KA8512 KA8512D Package 14-DIP-300 14-SOP-225B Operating Temperature -20°C ~ + 70°C BLOCK DIAGRAM EPI ERC EMUTE CMUTE 2 15K 3 RECTIFIER 30K 5 6 MUTE LOGIC 10K GAIN CELL G 10K _ 4 VREF + SUM AMP + LIMITER VREF _ 24K 30K 10K 15K GAIN CELL G ALC 15K + MIC AMP 51K EO + CO VREF 3.3K 12 _ 125K 125K _ 30K 9 8 11 CPICPI+ AGIC 13 ALC BIAS CIRCUIT RETIFIER 7 GND 14 VCC 1 VREF 10 CRC KA8512 COMPANDOR PIN CONFIGU.