ROHM BA3888S Datasheet

Audio ICs

High-definition sound processor

BA3888S

The BA3888S is a sound processor IC that performs phase and harmonic compensation on audio signals to accurately
reproduce the “rise” section of audio signals that determines the characteristics of the sound, and thus reproduce the
original recording as naturally as possible.

Applications
VCRs, tape recorders and video equipped television

Features

1) Corrects distortion in the rising section of audio sig­nals that results from miss-matched speakers and
amplifiers, and reproduces the original sound faith­fully.

2) To allow application with all types of speakers and
sources, the clarity can be adjusted using DC control.

Absolute maximum ratings (Ta = 25C)

3) DC control provided for selection of either processor
mode or bypass mode.

4) Bass boost can be set in the range 0dB to 9dB (Typ.)
using external components.

5) A noise gate circuit naturally cuts hiss at low volume.

Recommended operating conditions (Ta = 25C)

437

Audio ICs BA3888S

Block diagram

Electrical characteristics(unless otherwise noted, Ta = 25C, V

 R

L = 100kΩ and VCTL = 2.5V and Vref = 5V)

438

CC = 12V, fIN = 1kHz, VIN = 10dBV, Rg = 600Ω,

Audio ICs BA3888S

Measurement circuit

439