Ordering number : ENN6866A

90503TN (OT) / 20901RM (OT) No. 6866-1/24

Overview

The LC75421M is an electronic volume controller that

enables control of volume, balance, fader, bass/treble +

super bass, input switching, and input and output level

control functions using only a small number of external

components.

Functions

• Volume: 0 dB to –79 dB in 1-dB steps, and –

∞ (81 positions)

Balance function with separate L/R control

• Fader: rear output or front output can be attenuated

across 16 positions (in 2-dB steps from 0 dB to -

20 dB, 5-dB steps from –20 dB to –25 dB, 10-dB

steps from –25 dB to –45 dB, and –60 dB, –

∞)

• Bass/treble: A tone control circuit can be configured

using an external RC, with 15-position

control from 0 dB to ±11.9 dB in 1.7-dB

steps possible for both bass and treble

• Input gain: 0 dB to +18.75 dB (1.25-dB steps)

amplification is possible for the input signal.

• Output gain: Fader output can be selected among 0 dB,

+6.5 dB, and +8.5 dB.

• Input switching: Five input signals can be selected for

Left and for Right

• Super bass: Step control with 11 positions is possible,

with peaking characteristics (type T)

Features

• On-chip buffer amplifier cuts down number of external

components

• Low switching noise generated by on-chip switch due to

use of silicon gate CMOS process

• On-chip reference voltage circuit for analog ground

• Controls performed with serial input (CCB)

Package Dimensions

unit: mm

3263-MFP36SDJ (375 mil)

1

18

36

19

0.8

15.2

0.3

0.25

(0.8)

SANYO: MFP36SDJ (375 mil)

[LC75421M]

LC75421M

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Electronic Volume Controller for Cars

CMOS IC

Any and all SANYO products described or contained herein do not have specifications that can handle

applications that require extremely high levels of reliability, such as life-support systems, aircraft’s

control systems, or other applications whose failure can be reasonably expected to result in serious

physical and/or material damage. Consult with your SANYO representative nearest you before using

any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other

parameters) listed in products specifications of any and all SANYO products described or contained

herein.

• 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.