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
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.
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_IN
37
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_GND
28
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
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
1/21
THERMAL DATA
Symbol
Description
Value
Unit
R
th j-pins
Thermal Resistance Junction-pins
Ma x.
85
C/W
QUICK REFERENCE DATA
Symbol
Parameter
Min.
Typ.
Max.
Unit
V
S
Supply Voltage
7
9
10.2
V
V
CL
Max. input signal handling
2
Vrms
THD
Total Harmonic Distortion V = 1Vrms f = 1KHz
0.01
0.1
%
S/N
Signal to Noise Ratio V
out
= 1Vrms (mode = OFF)
106
dB
S
C
Channel Separation f = 1KHz
90
dB
Treble Control
(2db step)
-14
+14
dB
Middle Control (2db step)
-14
+14
dB
Bass Control (2dB step)
-14
+14
dB
Balance Control
1dB step (L
CH,
R
CH
)
-79
0
dB
Mute Attenuation
100
dB
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
S
Operating Supply Voltage
11
V
T
amb
Operating Ambient Temperature
-10 to 85
C
T
stg
Storage Temperature Range
-55 to +150
C
TDA7430 - TDA7431
4/21