BA3870 View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BA3870

BBS (bass boost system) for radio cassette players

ROHM Semiconductor 

Audio ICs

FCircuit Operation

(1) Overview of BBS

BBS is a system which boosts the low end of the audible

frequency range and at the same time linearly controls

the amount of boost according to the volume to produce

a rich sound without distortion through small diameter

speakers. It also adjusts the gain of the high-frequency

range to attain a balanced sound with natural volume.

(2) Operation of BBS

(1) BBS on

The signal system when BBS is on is shown in Fig. 2.

BA3870

425

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