BA3430S View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

MFG CO.

BA3430S

Stereo pre-amplifiers with mute detection circuits for car stereos

ROHM Semiconductor 

Audio ICs

FMeasurement circuit

BA3430S / BA3430F / BA3430FS

FAudio signal amplification circuit

(1) Input switch circuit

This circuit switches between head A and head B as

needed for the auto reverse function.

A 10kΩ or less resistor must be connected to the input pin

to limit the input current.

Equivalent circuit schematic

The electrolytic capacitor between the input pin and

ground is for preventing switch noise. Although it is pos-

sible to prevent switch noise in the audio output without

this capacitor by using the mute circuit, switch noise in

the mute detection circuit will not be prevented and noise

will be recognized as a song.

Truth table

273

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