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廬

TDA7430

TDA7431

DIGITALLY CONTROLLED AUDIO PROCESSOR WITH

SURROUND SOUND MATRIX AND VOICE CANCELLER

1 STEREO (4 STEREO) INPUT + 1 MIXER IN-

PUT

INPUT ATTENUATION CONTROL IN 0.5dB

STEP

VOICE CANCELLER IS AVAILABLE

TREBLE MIDDLE AND BASS CONTROL

THREE SURROUND MODES ARE AVAIL-

ABLE:

- MUSIC: 4 SELECTABLE RESPONSES

- MOVIE AND SIMULATED:

256 SELECTABLE RESPONSES

2 SPEAKER AND 2 RECORD ATTENU-

ATORS:

- 2 INDEPENDENT SPEAKERS AND 2

INDEPENDENT RECORD CONTROL

IN 1dB STEP FOR BALANCE FACILITY

- AVAILABILITY OF LOUDSPEAKER

EQUALIZATION FIXED BY EXTERNAL

COMPONENTS

- INDEPENDENT MUTE FUNCTION

ALL FUNCTIONS PROGRAMMABLE VIA SE-

RIAL BUS

DESCRIPTION

The TDA7430/7431 are volume tone (bass middle

and treble) balance (Left/Right) processors with

PIN CONNECTIONS

PS4

PS3

PS2

PS1

LP

LP1

HP1

HP2

VOUTREF

VAR_L

BASSO_L

VAR_R

BASSO_R

BASS_LO

BASS_LI

BASS_RO

BASS_RI

MIDDLE_LO

MIDDLE_LI

MIDDLE_RO

MIDDLE_RI

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

D95AU219B

SDIP42

TQFP44

ORDERING NUMBERS:

TDA7430 (TQFP44)

TDA7431 (SDIP42)

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 resistor net-

works and switches combined with operational

amplifiers.

Thanks to the used BIPOLAR/CMOS Technology,

Low Distortion, Low Noise and DC stepping are

obtained.

MIDDLE_LO

MIDDLE_RO

MIDDLE_RI

MIDDLE_LI

TREBLE_R

TREBLE_L

BASS_RO

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

V

S

CREF

NBRO

NBRIN

LPVC

R_IN

MIX

L_IN

NBLIN

NBLO

RECOUT_L

RECOUT_R

L_OUT

R_OUT

DIG_GND

SCL

SDA

ADDR

AGND

TREBLE_L

TREBLE_R

R_IN4

R_IN3

R_IN2

CREF

44 43 42 41 40 39 38 37 36 35 34

LP1

HP1

HP2.

REAROUT

REARIN

VAR_L

BASSO_L

VAR_R

BASSO_R

BASS_LO

BASS_LI

1

2

3

4

5

6

7

8

9

10

11

12 13 14 15 16 17 18 19 20 21 22

BASS_RI

AGND

SDA

SCL

33

32

31

30

29

28

27

26

25

24

23

R_IN1

MIX

L_IN1

L_IN2

L_IN3

L_IN4

RECOUT_L

RECOUT_R

L_OUT

R_OUT

DIG_GND

LPVC

D95AU220B

PS4

PS1

PS2

PS3

V

S

LP

September 1999

1/21

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  DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MAT...
  
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