Overview

The LC75371M is an electronic tone/volume control LSI

that can implement, with minimal external components,

volume, balance, fader, bass and treble, loudness, input

switching, and input level controls.

Functions

• Volume control: From 0 to –79 dB in 1-dB steps plus

–

∞ for a total of 81 settings. Since the left and right

levels can be set independently, this function can also be

used to implement a balance function.

• Fader: Attenuates either the rear or front channels to

one of 16 levels. (Provides 16 settings, namely, from 0

to –20 dB in 2-dB steps, from –20 to –25 dB in one

5-dB step, from –25 to –45 dB in 10-dB steps, –60 dB,

and –

∞.)

• Bass and treble controls: Forms an NF-type tone control

circuit (LUX type) using external capacitors. Provides

15 settings each for the bass and treble controls.

• Loudness control: A loudness function can be

implemented by attaching external RC circuits at the

taps provided from the volume control resistor ladder

starting at the –20-dB position.

• The input signal can be selected from one of three inputs

for each of the left and right channels. The input signal

can be amplified by between 0 and +18 dB in 6-dB steps.

• Serial data input: Supports CCB* format communication

with the system controller.

Features

• Built-in buffer amplifiers allow applications to be

implemented with few external components.

on chip.

Package Dimensions

unit: mm

3204-MFP36S

CMOS LSI

53096HA (OT) No. 5348-1/17

SANYO: MFP36S

[LC75371M]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

Car Stereo Electronic Tone

and Volume Control

LC75371M

Ordering number : EN5348

• CCB is a trademark of SANYO ELECTRIC CO., LTD.

• CCB is SANYO’s original bus format and all the bus

addresses are controlled by SANYO.