Description
DUAL RECORDING/PLAYBACK PREAMPLIFIER CIRCUIT WITH ALC IT7312 .
The IT7312 is a monolithic integrated circuit designed for dual pre-amplifier circuit with ALC for recording/playback amplifier of cassette tape recor.
Features
* High open loop gain
* Incorporates ALC detector circuit
* No input coupling condenser
* Low noise and current consumption
* Wide ALC range
* Wide operating voltage range: Vcc=5V~12V
* Low power on shock noise
BLOCK DIAGRAM
14 13 12 11 10
9
RIPPLE FILTER
AMP CH1
ALC
AMP C