SGS Thomson Microelectronics TDA7431, TDA7430 Datasheet
TDA7430
DIGITALLYCONTROLLEDAUDIO PROCESSOR WITH
SURROUNDSOUND MATRIX AND VOICECANCELLER
1 STEREO(4 STEREO)INPUT + 1 MIXER INPUT
INPUT ATTENUATION CONTROL IN 0.5dB
STEP
VOICECANCELLERIS AVAILABLE
TREBLEMIDDLE AND BASS CONTROL
THREE SURROUND MODES ARE AVAIL-
ABLE:
- MUSIC:4 SELECTABLERESPONSES
- MOVIE AND SIMULATED:
256SELECTABLE RESPONSES
2 SPEAKER AND 2 RECORD ATTENUATORS:
- 2 INDEPENDENTSPEAKERSAND 2
INDEPENDENTRECORD CONTROL
IN 1dBSTEPFOR BALANCEFACILITY
- AVAILABILITYOFLOUDSPEAKER
EQUALIZATIONFIXEDBY EXTERNAL
COMPONENTS
- INDEPENDENTMUTE FUNCTION
ALL FUNCTIONS PROGRAMMABLE VIA SERIAL BUS
DESCRIPTION
The TDA7430/7431are volume tone (bass middle
and treble) balance (Left/Right) processors with
TDA7431
SDIP42 TQFP44
ORDERING NUMBERS: TDA7430 (TQFP44)
TDA7431 (SDIP42)
voice canceller for quality audio applications in
car radioand Hi-Fisystems.
They reproduce surround sound by using programmable phase shifters and a signal matrix.
Control of all thefunctions is accomplishedby serial bus.
The AC signal setting is obtained by resistor networks and switches combined with operational
amplifiers.
Thanks to the usedBIPOLAR/CMOSTechnology,
Low Distortion, Low Noise and DC stepping are
obtained.
PIN CONNECTIONS
PS4
1
PS3
2
PS2
3
PS1
4
LP
5
LP1
6
HP1
7
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
September 1999
8
9
10
11
12
13
14
15
16
17
18
19
20
21
D95AU219B
42
V
S
41
CREF
40
NBRO
39
NBRIN
38 LPVC
R_IN37
MIX
36
L_IN
35
NBLIN
34
NBLO
33
RECOUT_L
32
RECOUT_R
31
L_OUT
30
R_OUT
29
DIG_GND28
SCL
27
SDA
26
ADDR
25
AGND
24
TREBLE_L
23
TREBLE_R
22
LP1
HP1
HP2.
REAROUT
REARIN
VAR_L
BASSO_L
VAR_R
BASSO_R
BASS_LO
BASS_LI
LP
PS1
PS2
PS3
VSPS4
CREF
R_IN4
44 43 42 41 3940 38 37 36 35 34
1
2
3
4
5
6
7
8
9
10
MIDDLE_LI
MIDDLE_LO
MIDDLE_RO
171118 19 20 21 22
TREBLE_L
TREBLE_R
MIDDLE_RI
12 13 14 15 16
BASS_RI
BASS_RO
R_IN3
AGND
R_IN2
SDA
LPVC
SCL
33
32
31
30
29
28
27
26
25
24
23
D95AU220B
R_IN1
MIX
L_IN1
L_IN2
L_IN3
L_IN4
RECOUT_L
RECOUT_R
L_OUT
R_OUT
DIG_GND
1/21
TDA7430 - TDA7431
BLOCK DIAGRAM (TDA7430)
RECOUT-L
27
SPKR
79dB CONTROL
SCL
SDA
L-OUT
25
ATT
MUTE
DIG GND
222123
SPKR
R-OUT
RECOUT-R
24
26
ATT
MUTE
79dB CONTROL
D95AU221B
5.6K
2.7K
100nF
100nF
22nF
18nF
5.6nF
22nF
22nF
4.7nF
100nF
5.6nF 680nF
2.2µF
BASSO-L VAR-L
BASS-LO
10 7 6
BASS-LI
MIDDLE-LO
MIDDLE-LI
15 14 11
19
TREBLE-L
PS4
PS3
PS2
PS1
1 2 3 43 42 41 40
LP1 HP1 HP2
31.5dB control
30K
FIX
RB
RM
RPS4
RPS3
RPS2
RPS1
RHP1
RLP1
PS4
PS3
PS2
PS1
79dB CONTROL
OFF
400Hz
400Hz
4KHz
90Hz
REC
SURR
R5
-
+
FIX
VAR
ATT
MUTE
3BAND
C BUS DECODER + LATCHES
2
BASS
MIDDLE
TREBLE
AMP
MIXING
MOVIE/SIM
OFF
MUSIC
MOVIE/
I
L-R
-
+
+
REAR
SURR
MUSIC
SIM
-
+
R6
-
+
+
TREBLE MIDDLE BASS
AMP
MIXING
EFFECT
CONTROL
LPF
9KHz
-
+
30K
MUTE
SURR
RM RB
50K
Vref
SUPPLY
100K
31.5dB control
8912183234
2.2µF
BASSO-R VAR-R
79dB CONTROL
BASS-RO
BASS-RI
100nF 100nF
MIDDLE-RO
18nF 22nF
MIDDLE-RI
17 16 13
5.6nF
REARIN
2.2µF
REAROUT
45
1.2nF
LP
22µF
CREF
AGND
S
V
39 20 38 44
MIX-IN
1µF100nF
LPVC MIX TREBLE-R
5.6K
2.7K
FIX
VAR
ATT
REC
3BAND
FIX
REAR
SURR
OFF
ON
VOICE
+LPF
-
2/21
50K
50K
50K
L-IN3
50K
28
L-IN4
0.47µF
31
30
29
L-IN1
L-IN2
0.47µF
0.47µF
0.47µF
50K
33
35
R-IN2
R-IN1
0.47µF
0.47µF
37
36
R-IN4
R-IN3
0.47µF
0.47µF
50K
50K
50K
THE SWITCHES POSITION MATCHES THE RESET CONDITION
BLOCK DIAGRAM (TDA7431)
NBLO
RECOUT-L
32
ATT
SPKR
79dB CONTROL
30
L-OUT
MUTE
SCL
SDA
272628
DIG GND
25
ADDR
SPKR
TDA7430 - TDA7431
R-OUT
RECOUT-R
29
31
ATT
MUTE
79dB CONTROL
D95AU222C
NBRO
40391213162293638
5.6K
2.7K
NB1
100nF
100nF
22nF
18nF
5.6nF
22nF
22nF
4.7nF
100nF
NB-LA NB-LB
2.2µF
NB2
NBLIN
VAR-L
BASSO-L
BASS-LO
BASS-LI
MIDDLE-LO
MIDDLE-LI
TREBLE-L
PS4
PS3
PS2
PS1
30K
MUTE
79dB CONTROL
RM RB
21 20 17
42 24 415
NB3
NBRIN
VAR-R
BASSO-R
TREBLE-R
VOUTREF
CREF
AGND
S
V
LP
NB-RA NB-RB
2.2µF
BASS-RO
BASS-RI
100nF 100nF
MIDDLE-RO
18nF 22nF
MIDDLE-RI
22µF
1.2nF
NB4
5.6K
2.7K
5.6nF
-
+
30K
79dB CONTROL
FIX
14 11 10 34 33
RB
RM
19 18 15
23
OFF
PS4
RPS4
400Hz
PS3
RPS3
400Hz
PS2
4KHz
RPS2
PS1
90Hz
RPS1
REC
SURR
FIX
VAR
ATT
MUTE
3BAND
C BUS DECODER+ LATCHES
2
BASS
MIDDLE
TREBLE
AMP
MIXING
MOVIE/SIM
MUSIC
MOVIE/
OFF
L-R
-
I
+
REAR
SURR
MUSIC
SIM
-
+
FIX
FIX
TREBLE MIDDLE BASS
AMP
MIXING
EFFECT
CONTROL
LPF
9KHz
+
VAR
SURR
-
3BAND
OFF
REC
ATT
REAR
SURR
Vref
SUPPLY
5.6nF 680nF
LP1 HP1 HP2
678 4 3 2 1
31.5dB control
ON
R6
-
+
R5
RHP1
RLP1
50K
35
L-in
0.47µF
+
+
VOICE
100K
+LPF
-
control
31.5dB
50K
37
R-in
0.47µF
MIX-IN
1µF100nF
LPVC MIX
THE SWITCHES POSITION MATCHES THE RESET CONDITION
3/21
TDA7430 - TDA7431
THERMAL DATA
Symbol Description Value Unit
R
thj-pins
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
T
amb
T
QUICK REFERENCE DATA
Symbol Parameter Min. Typ. Max. Unit
V
V
THD Total Harmonic DistortionV = 1Vrms f = 1KHz 0.01 0.1 %
S/N Signal to Noise Ratio V
S
Thermal Resistance Junction-pins Max. 85 °C/W
Operating SupplyVoltage 11 V
S
Operating Ambient Temperature -10 to85
Storage Temperature Range -55 to +150 °C
stg
Supply Voltage 7 9 10.2 V
S
CL
Max. input signal handling 2 Vrms
= 1Vrms (mode = OFF) 106 dB
out
Channel Separation f = 1KHz 90 dB
C
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
) -79 0 dB
CH,RCH
Mute Attenuation 100 dB
C
°
4/21
TEST CIRCUIT (TDA7430)
TDA7430 - TDA7431
2.7K
2.7K
22nF
22nF
4.7nF
100nF
1.2nF
5.6nF
5.6nF
5.6nF
100nF
22nF
18nF
18nF
MIDDLE-LO
22nF
MIDDLE-RO
TREBLE-R
TREBLE-L
LPVC
MIDDLE-LI
MIDDLE-RI
D95AU225B
2.2µF
876
9
PS4
40
PS3
41
PS2
42
PS1
43
LP
44
LP1
1
18
19
34
14
15
16
17
27 26 25 24 23 22 21 20
RECOUT-L RECOUT-R L-OUT R-OUT
2.2µF
REAROUT
VAR-L
BASSO-LVAR-RBASSO-R
TDA7430
2.2µF
0.47µF
REARIN
R-IN4
45
DIG-GND SCL SDA AGND
37 36 35
0.47µF
R-IN3
HP2
0.47µF
R-IN2
38
32
HP1
680nF
32
33
31
30
29
28
39
10
11
12
13
R-IN1
L-IN1
L-IN2
L-IN3
L-IN4
V
S
CREF
BASS-LO
BASS-LI
BASS-RO
BASS-RI
0.47µF
0.47µF
0.47µF
0.47µF
0.47µF
22µF
220nF
100nF
100nF
100nF
100nF
100nF10µF
5.6K
5.6K
1µF
MIX
TEST CIRCUIT (TDA7431)
22nF
PS4
22nF
PS3
4.7nF
100nF
1.2nF
5.6nF
5.6nF
5.6nF
100nF
2.7K
2.7K
22nF
18nF
22nF
18nF
PS2
PS1
LP
LP1
TREBLE-R
TREBLE-L
LPVC
MIDDLE-LO
MIDDLE-LI
MIDDLE-RO
MIDDLE-RI
D95AU224B
2.2µF
13
12 11 10 8 7 37 36 35
2.2µF
VAR-L
HP2BASSO-LVAR-RBASSO-R
2
3
4
5
6
22
TDA7431
23
38
18
19
20
21
9
32 31 30 29 28 27 26 25 24
VOUTREF RECOUT-L RECOUT-R L-OUT R-OUT
680nF
0.47µF
HP1
R-IN
1µF
MIX
0.47µF
L-IN
DIG-GND SCL SDA ADDR AGND
V
S
421
100nF10µF
41
40
39
34
33
NBRO
NBRIN
NBLIN
NBLO
15K
15K
220nF
220nF
7.5K
220nF
220nF
7.5K
22µF
CREF
100nF
14
BASS-LO
100nF
15
BASS-LI
BASS-RO
16
5.6K
100nF
100nF
17
BASS-RI
5.6K
5/21
TDA7430 - TDA7431
ELECTRICALCHARACTERISTICS (referto the test circuitT
V
= 1Vrms;RG= 600Ω, allcontrolsflat (G = 0dB), EffectCtrl = -6dB, MODE = OFF; f = 1KHz
in
=25°C, VS= 9V,RL= 10KΩ,
amb
unless otherwisespecified)
Symbol Parameter Test Condition Min. Typ. Max. Unit
SUPPLY
V
S
I
S
SVR Ripple Rejection L
Supply Voltage 7 9 10.2 V
Supply Current 10 18 26 mA
CH /RCHout, Mode = OFF 60 80 dB
INPUTSTAGE
R
IN
V
CL
C
RANGE
A
VMIN
A
VMAX
A
STEP
V
DC
A
VO1
A
VO2
A
VO3
R
LPV
R
MIX
Input Resistance 35 50 65 KΩ
Clipping Level THD = 0.3% 2 2.5 Vrms
Control Range 31.5 dB
Min. Attenuation -1 0 1 dB
Max. Attenuation 31 31.5 32 dB
Step Resolution 0.5 1 dB
DC Steps adjacent att.step -3 0 3 mV
Voice CancelerOutput 1 LIN=RIN,RIN= ON,
V
= 0V FIX, 0dB attenuation
mix
Voice CancelerOutput 2 LIN=RIN=0VV
mix
=1V
rms
FIX,
567dB
-1 0 1 dB
0dB attenuation
Voice CancelerOutput 3 LIN=-RIN,V
= 0V FIX,
mix
567dB
0dB attenuation
Low Pass Filter Resistance 22.4 32 41.6 KΩ
Input Impedance 70 100 130 KΩ
BASSCONTROL
Gb ControlRange Max. Boost/cut +11.5 +14.0 +16.0 dB
B
STEP
R
B
Step Resolution 1 2 3 dB
Internal Feedback Resistance 32 44 56 K
MIDDLE CONTROL
Gm Control Range Max. Boost/cut +11.5 +14.0 +16.0 dB
M
STEP
R
M
Step Resolution 1 2 3 dB
Internal Feedback Resistance 17.5 25 32.5 K
TREBLECONTROL
Gt Control Range Max. Boost/cut +13.0 +14.0 +15.0 dB
T
STEP
Step Resolution 1 2 3 dB
EFFECTCONTROL
C
RANGE
S
STEP
Control Range -21 -6 dB
Step Resolution 0.5 1 1.5 dB
Ω
Ω
6/21
TDA7430 - TDA7431
ELECTRICALCHARACTERISTICS (continued)
SURROUNDSOUNDMATRIX
TEST CONDITION (Phase Resistor SelectionD0=0, D1=1,D2=0.D3=1, D4=0,D5=1, D6=0,D7=1
Symbol Parameter Test Condition Min. Typ. Max. Unit
G
D
OFF
GOFF
In-phase Gain (OFF) Mode OFF, Input signal of
LR In-phase Gain Difference
(OFF)
G
MOV
D
GMOV
In-phase Gain (Movie) Movie mode, Effect Ctrl = -6dB
LR In-phase Gain Difference
(Movie)
G
MUS
D
GMUS
In-phase Gain (Music) Musicmode, Effect Ctrl = -6dB
LR In-phase Gain Difference
(Music)
L
MON1
L
MON2
L
MON3
R
MON1
R
MON2
R
MON3
R
LP1
R
HPI
R
LPF
Simulated L Output 1 SimulatedMode,EffectCtrl= -6dB
Simulated L Output 2 SimulatedMode,EffectCtrl= -6dB
Simulated L Output 3 SimulatedMode, EffectCtrl= -6dB
Simulated R Output 1 SimulatedMode,EffectCtrl= -6dB
Simulated R Output 2 SimulatedMode,EffectCtrl= -6dB
Simulated R Output 3 SimulatedMode,EffectCtrl= -6dB
Low Pass Filter Resistance 7 10 13 KΩ
High Pass Filter Resistance 42 60 78 KΩ
LP PinImpedance 7 10 13 K
1kHz, 1.4 V
L
L
→
in
out
p-p,Rin
→ R
out
Mode OFF, Input signal of
1kHz, 1.4 V
Rin→ R
Input signalof 1kHz, 1.4 V
Rin→ R
p-p
out,Lin
out,Lin
→ L
→ L
out
p-p
out
Movie mode, Effect Ctrl = -6dB
Input signalof 1kHz, 1.4 V
R
(R
in
→
out
)–(L
→
in
Input signalof 1kHz, 1.4 V
R
(R
in
→
out
), (L
→
in
p-p
L
)
out
p-p
L
)
out
Music mode, Effect Ctrl = -6dB
Input signalof 1kHz, 1.4 V
(Rin→ R
)-(Lin→ L
out
out
p-p
)
Input signalof 250Hz,
1.4 V
p-p,Rin
and Lin→ L
out
Input signalof 1kHz,
1.4 V
p-p,Rin
and Lin→ L
out
Input signalof 3.6kHz,
1.4 V
p-p,Rin
and L
L
→
in
out
Input signalof 250Hz,
1.4 V
p-p,Rin
and Lin→R
out
Input signalof 1kHz,
1.4 V
p-p,Rin
and Lin→R
out
Input signalof 3.6kHz,
1.4 V
p-p,Rin
and Lin→ R
out
-1 0 1 dB
-1 0 1 dB
8dB
0dB
7dB
0dB
4.5 dB
–4.0 dB
7.0 dB
– 4.5 dB
3.8 dB
–20 dB
Ω
7/21
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