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TDA7432

BASIC FUNCTION AUDIO PROCESSOR

ONE STEREO AND ONE MONO INPUTS

MUTE FUNCTION (SOFTWARE AND HARD-

WARE) CONTROLLED

VOLUME CONTROL IN 1dB STEP

BASS AND TREBLE CONTROL IN 2dB STEP

FULLY PROGRAMMABLE LOUDNESS CON-

TROL

FOUR SPEAKER ATTENUATORS:

鈥?Independentattenuation control

鈥?Independentmute function

ALL FUNCTIONS PROGRAMMABLE VIA

I

2

CBUS

DESCRIPTION

The TDA7432 is a volume, tone (bass and treble)

balance (Left/Right) processor for quality audio

applications in car radio and Hi-Fi systems.

Control is accomplished by serial bus microproc-

essor interface.

The AC signal setting is obtained by resistor net-

BLOCK DIAGRAM

4.7K

100nF

BINL

10

100nF

BOUTL

9

SO20

ORDERING NUMBER:

TDA7432D

works and switches combined with operational

amplifiers.

Thanks to the advanced BIPOLAR/CMOS Tech-

nology, the external components have been re-

duced.

68nF

2.7nF

LOUD_L

6

TRL

11

SPKR

ATT

16

LEFT FRONT

IN_L

3

MUX

VOL

+ LOUD

BASS

TREBLE

SPKR

ATT

14

LEFT REAR

MONO_IN/MUTE

4

18

S BUS DECODER + LATCHES

19

SCL

SDA

IN_R

2

MUX

VOL

+ LOUD

BASS

TREBLE

SPKR

ATT

SPKR

ATT

15

RIGHT FRONT

VS

17

SUPPLY

1

GND

10碌F

CREF

68nF

5

8

BINR

7

BOUTR

100nF

4.7K

12

TRR

2.7nF

13

RIGHT REAR

20

LOUD_R

100nF

D95AU357A

August 1996

1/10

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