The BA3870 is a bass boost audio IC for radio cassette players. BBS adjusts the base boost to a level appropriate for the volume, achieving a rich sound without distortion. Frequency characteristics can be set externally, enabling system design to meet the needs of the application.

Features

1) Adjustment of the base boost to a level appropriate

for the volume through BBS.

2) Maximum bass boost level can be set externally.

(20dB recommended)

3) Treble boost circuit (constant at 4dB)

included on-chip to preserve overall balance.

4) BBS on/off “pop” sound almost nonexistent.

Applications

Radio cassette players