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TDA7430
TDA7431
June 2004
1FEATURES
■ 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
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.
DIGITALLY CONTROLLED AUDIO PROCESSOR WITH
SURROUND SOUND MATRIX AND VOICE CANCELLER
Figure 2. Pin Connection (TDA7430)
1
2
3
5
6
4
7
8
9
10
17
11
18 19 20 21 22
44 43 42 41
39
40 38 37 36 35 34
28
27
26
24
23
25
33
32
31
29
30
VAR_L
REARIN
REAROUT
HP1
LP1
HP2.
BASS_LI
BASS_LO
BASSO_R
BASSO_L
VAR_R
BASS_RO
BASS_RI
MIDDLE_LO
MIDDLE_LI
MIDDLE_RI
MIDDLE_RO
TREBLE_R
TREBLE_L
AGND
SDA
SCL
LP
PS1
PS2
PS3
V
S
PS4
CREF
R_IN4
R_IN3
R_IN2
LPVC
L_IN4
RECOUT_L
RECOUT_R
R_OUT
DIG_GND
L_OUT
R_IN1
MIX
L_IN1
L_IN3
L_IN2
D95AU220B
12 13 14 15 16
REV. 10
able 1. Order Codes
Part Number Package
TDA7431S SDIP42
TDA7430 TQFP44
TDA7430TR Tape & Reel
SDIP42 TQFP44
