BA3870 Datasheet, PDF (1/14 Pages) Rohm – BBS (bass boost system) for radio cassette players

Audio ICs
BBS (bass boost system) for radio
cassette players
BA3870
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.
FApplications
Radio cassette players
FFeatures
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.
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
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