FOUR HIGH PASS CHANNELS

ONE STEREO LOW PASS CHANNEL WITH

GAIN CONTROL

DIRECT MUTE PIN

FULLY PROGRAMMABLE VIA I

DESCRIPTION

The TDA7401 is an upgrade of the TDA7435

audioprocessor.

Due to a highly linear signal processing, using

CMOS-switching techniques very low distortion

and very low noise are obtained.

Second order high pass and low pass filters with

programmable corner frequencies provide the

loudspeaker equalization.

Very low DC stepping is obtained by using a

BICMOS technology.

January 1999

®

HP FILTER

HP FILTER

HP FILTER

HP FILTER

MUTE

GAIN

+20/-79dB

MUX

I

SUPPLY

22

21

20

19

18

17

16

15

1

2

HP FL 1

HP FL 2

HP FR 1

HP FR 2

HP RL 1

HP RL 2

HP RR 1

HP RR 2

AUX 1 IN L

AUX 1 IN R

76

AUX 2 OUT R

8

AUX 2 OUT L

9

HP RR OUT

14

HP RL OUT

13

HP FR OUT

11

HP FL OUT

10

OUT REF

12

28

23

24

25

26

27

SDA SCL DGND AGND CREF

D98AU822A

3

MUTE

45

CR1 CL1

CR2

CL2

BLOCK DIAGRAM

SO28

ORDERING NUMBER: TDA7401D

TDA7401

DIGITALLY CONTROLLED AUDIO PROCESSOR

WITH LOUDSPEAKERS EQUALIZER

1/10