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
- AVAILABILITYOF LOUDSPEAKER
EQUALIZATIONFIXED 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
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/CMOSTechnology,
Low Distortion, Low Noise and DC stepping are
obtained.
September 1999
PIN CONNECTIONS
ORDERING NUMBERS: TDA7430 (TQFP44)
TDA7431 (SDIP42)
SDIP42 TQFP44
1
3
2
4
5
6
7
8
9
R_OUT
L_OUT
RECOUT_R
NBLO
RECOUT_L
NBLIN
L_IN
MIX
R_IN37
36
35
34
33
31
32
30
29
D95AU219B
10
11
12
13
14
42
41
40
39
38 LPVC
NBRIN
NBRO
CREF
V
S
15
16
TREBLE_R
TREBLE_L
AGND
SDA
ADDR
SCL
DIG_GND28
27
26
24
25
23
22
17
18
19
20
21
LP1
HP1
HP2
VOUTREF
VAR_L
VAR_R
BASSO_L
BASSO_R
BASS_LO
PS4
PS3
PS2
PS1
LP
BASS_LI
BASS_RO
BASS_RI
MIDDLE_LI
MIDDLE_LO
MIDDLE_RO
MIDDLE_RI
1
2
3
5
6
4
7
8
9
10
17
11
18 19 20 21 22
44 43 42 41 3940 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
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