SGS Thomson Microelectronics TDA7429S, TDA7429T Datasheet
TDA7429S
DIGITALLY CONTROLLED AUDIO PROCESSOR
WITH SURROUND SOUND MATRIX
3 STEREO/4STEREOINPUTS
INPUT ATTENUATION CONTROL IN 0.5dB
STEP
TREBLEMIDDLE AND BASS CONTROL
THREE SURROUND MODES ARE AVAIL-
ABLE:
- MUSIC: 4 SELECTABLERESPONSES
- MOVIE ANDSIMULATED:
256SELECTABLE RESPONSES
FOURSPEAKERS ATTENUATORS:
- 4 INDEPENDENTSPEAKERSCONTROL
IN 1dB STEPSFORBALANCE FACILITY
- INDEPENDENTMUTE FUNCTION
ALL FUNCTIONS PROGRAMMABLE VIA SERIAL BUS
DESCRIPTION
The TDA7429 is volume tone (bass middle and
treble) balance (Left/Right) processors for quality
audio applicationsin TV and Hi-Fisystems.
TDA7429T
SDIP42 TQFP44
ORDERING NUMBERS:
TDA7429S TDA7429T
It reproduces surround sound by using programmable phase shifters and a signalmatrix. Control
of all the functionsis accomplishedby serial bus.
The AC signal setting is obtainedby resistor networks and switches combined with operational
amplifiers.
Thanks to theused BIPOLAR/CMOSTechnology,
Low Distortion, Low Noise and DC stepping are
obtained.
PIN CONNECTION (TQFP44)
LP1
HP1
HP2.
REAROUT
REARIN
VAR_L
BASSO_L
VAR_R
BASSO_R
BASS_LO
BASS_LI
LP
PS1
PS2
44 43 42 41 3940 38 37 36 35 34
1
2
3
4
5
6
7
8
9
10
12 13 14 15 16
BASS_RI
BASS_RO
MIDDLE_LO
S
PS3
V
PS4
CREF
171118 19 20 21 22
MIDDLE_LI
TREBLE_R
MIDDLE_RI
MIDDLE_RO
R_IN4
TREBLE_L
R_IN3
AGND
R_IN2
SDA
R_IN1
33
32
31
30
29
28
27
26
25
24
23
SCL
MONITOR_R
MONITOR_L
L_IN1
L_IN2
L_IN3
L_IN4
AUXOUT_L
AUXOUT_R
L_OUT
R_OUT
DIG_GND
D96AU532
July 1999
1/20
TDA7429S - TDA7429T
PIN CONNECTION (SDIP42)
REAROUT
MIDDLE_LO
MIDDLE_LI
MIDDLE_RO
TEST CIRCUIT (TDA7429S)
PS4
PS3
PS2
PS1
LP
LP1
HP1
HP2
REARIN
VAR_L
BASSO_L
VAR_R
BASSO_R
BASS_LO
BASS_LI
BASS_RO
BASS_RI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
D97AU623
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
V
S
CREF
R_IN3
R_IN2
R_IN1
MONITOR_R
MONITOR_L
L_IN1
L_IN2
L_IN3
AUXOUT_L
AUXOUT_R
L_OUT
R_OUT
DIG_GND
SCL
SDA
AGND
TREBLE_L
TREBLE_R
MIDDLE_RI
2.7K
2.7K
22nF
22nF
4.7nF
100nF
1.2nF
5.6nF
5.6nF
5.6nF
100nF
22nF
18nF
22nF
18nF
PS4
PS3
PS2
PS1
LP1
TREBLE_R
TREBLE_L
MONITOR_R
MIDDLE_LO
MIDDLE_LI
MIDDLE_RO
MIDDLE_RI
D97AU626
2.2µF
14
1
2
3
4
LP
5
6
23
24
37
19
20
21
22
32 31 30 29 28 27 26 25
AUXOUT_L AUXOUT_R L_OUT R_OUT
BASSO_LVAR_RBASSO_R
13 12 11
2.2µF
VAR_L
REAROUT
DIG_GND SCL SDA AGND
2.2µF
0.47µF
REARIN
910
R_IN3
40 39
0.47µF
87
HP2
R_IN2
HP1
680nF
38
35
34
33
42
41
15
16
17
18
R_IN1
MONITOR_L36
L_IN1
L_IN2
L_IN3
V
S
CREF
BASS_LO
BASS_LI
BASS_RO
BASS_RI
0.47µF
0.47µF
0.47µF
0.47µF
100nF10µF
22µF
220nF
100nF
100nF
5.6K
100nF
100nF
5.6K
2/20
TDA7429S - TDA7429T
QUICK REFERENCEDATA
Symbol Parameter Min. Typ. Max. Unit
V
V
CL
THD Total Harmonic DistortionV = 1Vrms f = 1KHz 0.01 0.1 %
S/N Signal to NoiseRatio V
S
TEST CIRCUIT (TDA7429T)
Supply Voltage 7 9 10.2 V
S
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 (2dbstep) -14 +14 dB
Bass Control (2dB step) -14 +14 dB
Balance Control 1dB step (L
CH, RCH) -79 0 dB
Mute Attenuation 100 dB
2.7K
2.7K
22nF
22nF
4.7nF
100nF
1.2nF
5.6nF
5.6nF
5.6nF
100nF
22nF
18nF
22nF
18nF
PS4
PS3
PS2
PS1
LP1
TREBLE-R
TREBLE-L
MONITOR_R
MIDDLE-LO
MIDDLE-LI
MIDDLE-RO
MIDDLE-RI
D96AU533
2.2µF
BASSO-LVAR-RBASSO-R
9
40
41
42
43
LP
44
1
18
19
33
14
15
16
17
AUXOUT-L AUXOUT-R L-OUT R-OUT
876
27 26 25 24 23 22 21 20
2.2µF
VAR-L
2.2µF
0.47µF
REAROUT
REARIN
45
R-IN4
TDA7429
DIG-GND SCL SDA AGND
0.47µF
R-IN3
37 36 35
32
HP2
0.47µF
R-IN2
HP1
680nF
R-IN1
34
MONITOR_L32
L-IN1
31
L-IN2
30
L-IN3
29
L-IN4
28
V
39
CREF
38
10
BASS-LO
11
BASS-LI
BASS-RO
12
13
BASS-RI
0.47µF
0.47µF
0.47µF
0.47µF
0.47µF
S
100nF10µF
22µF
220nF
100nF
100nF
5.6K
100nF
100nF
5.6K
3/20
TDA7429S - TDA7429T
BLOCK DIAGRAM (TDA7429T)
AUXOUT-L
27
SPKR
79dB CONTROL
SCL
SDA
L-OUT
25
ATT
MUTE
DIG GND
222123
SPKR
R-OUT
AUXOUT-R
24
26
ATT
MUTE
79dB CONTROL
D96AU513
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
LP1 HP1 HP2
1 2 3 43 42 41 40
31.5dB
control
32
MONITOR L
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
MUSIC
MOVIE/
I
OFF
L-R
-
+
+
REAR
SURR
MUSIC
SIM
-
+
R6
-
+
FIX
FIX
TREBLE MIDDLE BASS
AMP
MIXING
EFFECT
CONTROL
LPF
9KHz
+
VAR
SURR
-
30K
89121833
2.2µF
ATT
REC
MUTE
BASSO-R VAR-R
79dB CONTROL
3BAND
BASS-RO
SURR
REAR
RM RB
17 16 13
OFF
50K
45
Vref
SUPPLY
39 20 38 44
31.5dB
control
TREBLE-R
LP
CREF
AGND
S
V
MONITOR R
BASS-RI
100nF 100nF
MIDDLE-RO
18nF 22nF
MIDDLE-RI
REARIN
2.2µF
REAROUT
1.2nF
22µF
5.6K
2.7K
5.6nF
4/20
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
34
35
R-IN2
R-IN1
0.47µF
0.47µF
37
36
R-IN4
R-IN3
0.47µF
0.47µF
THE SWITCHES POSITION MATCHES THE RESET CONDITION
50K
50K
50K
BLOCK DIAGRAM (TDA7429S)
AUXOUT_L
32
SPKR
79dB CONTROL
TDA7429S - TDA7429T
SCL
SDA
L_OUT
30
ATT
MUTE
DIG GND
272628
SPKR
R_OUT
AUXOUT_R
29
31
ATT
MUTE
79dB CONTROL
D97AU624A
5.6K
2.7K
100nF
100nF
22nF
18nF
5.6nF
22nF
22nF
4.7nF
100nF
5.6nF 680nF
30K
2.2µF
BASSO_L VAR_L
BASS_LO
15 12 11
RB
BASS_LI
MIDDLE_LO
RM
MIDDLE_LI
20 19 16
24
TREBLE_L
PS4
RPS4
PS3
RPS3
PS2
RPS2
PS1
RPS1
LP1 HP1 HP2
678 4321
31.5dB
control
36
MONITOR_L
-
+
FIX
VAR
ATT
REC
MUTE
79dB CONTROL
FIX
SURR
OFF
PS4
400Hz
PS3
400Hz
PS2
4KHz
PS1
90Hz
R5
RHP1
RLP1
3BAND
C BUS DECODER + LATCHES
2
BASS
MIDDLE
TREBLE
AMP
MIXING
MOVIE/SIM
MUSIC
MOVIE/
I
OFF
L-R
-
+
+
REAR
SURR
MUSIC
SIM
-
+
R6
-
+
FIX
FIX
TREBLE MIDDLE BASS
AMP
MIXING
EFFECT
CONTROL
LPF
9KHz
+
VAR
SURR
-
30K
1314172337
2.2µF
ATT
REC
MUTE
BASSO_R VAR_R
79dB CONTROL
3BAND
BASS_RO
REAR
SURR
RM RB
22 21 18
OFF
50K
910
Vref
SUPPLY
42 25 41 5
31.5dB
control
BASS_RI
TREBLE_R
REARIN
1.2nF
LP
22µF
CREF
AGND
S
V
MONITOR_R
5.6K
100nF 100nF
MIDDLE_RO
2.7K
18nF 22nF
MIDDLE_RI
5.6nF
2.2µF
REAROUT
50K
50K
L_IN2
50K
33
L_IN3
0.47µF
35
34
L_IN1
0.47µF
0.47µF
50K
38
R_IN1
0.47µF
40
39
R_IN3
R_IN2
0.47µF
0.47µF
THE SWITCHES POSITION MATCHES THE RESET CONDITION
50K
50K
5/20
TDA7429S - TDA7429T
THERMAL DATA
Symbol Description Value Unit
R
thj-pins
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
T
amb
T
Thermal Resistance Junction-pins Max. 85
Operating Supply Voltage 11 V
S
Operating Ambient Temperature -10 to 85
Storage Temperature Range -55 to +150
stg
C/W
°
°
°
C
C
ELECTRICALCHARACTERISTICS (refer to the testcircuit T
V
= 1Vrms;RG= 600Ω, all controlsflat (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/RCH out
, Mode = OFF 60 80 dB
INPUTSTAGE
C
RANGE
A
A
A
R
IN
V
CL
VMIN
VMAX
STEP
Input Resistance 35 50 65 K
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
BASSCONTROL
Gb Control Range 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 KΩ
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 KΩ
Ω
TREBLECONTROL
Gt ControlRange 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
SURROUNDSOUND MATRIXPHASE
6/20
R
R
R
R
R
PS10
PS11
PS12
PS13
PS20
Phase Shifter1: D1 = 0, D0 = 0 8.3 11.8 15.2 KΩ
Phase Shifter1: D1 = 0, D0 = 1 10 14.1 18.3 KΩ
Phase Shifter1: D1 = 1, D0 = 0 12.6 17.9 23.3 K
Phase Shifter1: D1 = 1, D0 = 1 26.4 37.3 48.85 KΩ
Phase Shifter2: D3 = 0, D2 = 0 4 5.6 7.2 KΩ
Ω
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