Dual Preamplifier With Alc

The BA3306 is a dual preamplifier with ALC designed for use in stereo radio-cassette recorders and tape recorders. It comes in a compact 9-pin SIP package and has two record/playback preamplifiers, and an ALC circuit. The preamplifi- ers have high gain and low distortion, and CAN be directly coupled to the tape head without coupling capacitors. This prevents tape head magnetization and pop noise generation. The ALC circuit has good channel balance and large dynamic range and CAN be constructed with addition of just an exter- nal detector and time constant circuit. The IC also includes a power-on mute circuit that suppresses pop noise generation. By ROHM Co. Ltd.