BA3313L Datasheet, PDF (1/5 Pages) Rohm – Dual preamplifier with ALC detector circuit

Audio ICs
Dual preamplifier with ALC detector
circuit
BA3313L
The BA3313L is a dual preamplifier IC with built-in ALC detector circuit, designed for use in stereo radio cassette record-
ers. It comes in a compact 12-pin ZIP package, and has two record / playback preamplifiers, and an ALC detector circuit.
The preamplifiers can be directly coupled to the tape head without coupling capacitors to prevent tape head magnetiza-
tion and “pop” noise generation.
With the built-in ALC detector circuit, an ALC circuit with large dynamic range can be constructed with addition of just
an external time constant circuit.
FApplications
Stereo radio cassette recorders
FFeatures
1) Input bias circuit does not require coupling capaci-
tors.
2) Built-in ALC circuit with external time constant circuit.
3) Wide operating power supply voltage range.
4) High gain.
5) Low noise.
FBlock diagram
217