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TDA7430TR

THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR

STMicroelectronics 

TDA7430

TDA7431

DIGITALLY CONTROLLED AUDIO PROCESSOR WITH

SURROUND SOUND MATRIX AND VOICE CANCELLER

1 FEATURES

■ 1 STEREO (4STEREO) INPUT + 1 MIXER

INPUT

■ INPUT ATTENUATION CONTROL IN 0.5dB

STEP

■ VOICE CANCELLER IS AVAILABLE

■ TREBLE MIDDLE AND BASS CONTROL

■ THREE SURROUND MODES ARE

AVAILABLE

– MUSIC: 4 SELECTABLE RESPONSES

– MOVIE AND SIMULATED:

256 SELECTABLE RESPONSES

■ 2 SPEAKERS AND 2 RECORD

ATTENUATORS:

– 2 INDEPENDENT SPEAKERS AND 2 INDE-

PENDENT RECORD CONTROL

IN 1dB STEP FOR BALANCE FACILITY

– AVAILABILITY OF LOUDSPEAKER EQUAL-

IZATION FIXED BY EXTERNAL COMPO-

NENTS

– INDEPENDENT MUTE FUNCTION

■ ALL FUNCTIONS PROGRAMMABLE VIA

SERIAL BUS

Figure 2. Pin Connection (TDA7430)

Figure 1. Package

SDIP42

TQFP44

Table 1. Order Codes

Part Number

TDA7431S

TDA7430

TDA7430TR

Package

SDIP42

TQFP44

Tape & Reel

2 DESCRIPTION

The TDA7430/TDA7431 is volume tone (bass middle

and treble) balance (Left/Right) processors voice

canceller for quality audio applications in car radio

and Hi-Fi systems.

They reproduce surround sound by using pro-

grammable phase shifters and a signal matrix.

Control of all the functions is accomplished by se-

rial bus. The AC signal setting is obtained by resis-

tor networks and switches combined with

operational amplifiers. Thanks to the used BIPO-

LAR/CMOS Technology,

Low Distortion, Low Noise and DC stepping are

obtained.

June 2004

LP1

HP1

HP2.

REAROUT

REARIN

VAR_L

BASSO_L

VAR_R

BASSO_R

BASS_LO

BASS_LI

44 43 42 41 40 39 38 37 36 35 34

1

33

2

32

3

31

4

30

5

29

6

28

7

27

8

26

9

25

10

24

11

23

12 13 14 15 16 17 18 19 20 21 22

R_IN1

MIX

L_IN1

L_IN2

L_IN3

L_IN4

RECOUT_L

RECOUT_R

L_OUT

R_OUT

DIG_GND

D95AU220B

REV. 10

1/23

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