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What is 7429?

This electronic component, produced by the manufacturer "STMicroelectronics", performs the same function as "3 BAND EQUALIZER AUDIO PROCESSOR WITH SUBWOOFER CONTROL".


7429 Datasheet PDF - STMicroelectronics

Part Number 7429
Description 3 BAND EQUALIZER AUDIO PROCESSOR WITH SUBWOOFER CONTROL
Manufacturers STMicroelectronics 
Logo STMicroelectronics Logo 


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TDA7429L
3 BAND EQUALIZER AUDIO PROCESSOR
WITH SUBWOOFER CONTROL
s 3 STEREO INPUTS
s AUXILIARY MONO INPUT
s INPUT ATTENUATION CONTROL IN 0.5dB
STEP
s TREBLE MIDDLE AND BASS CONTROL
s FOUR SPEAKERS ATTENUATORS:
- 4 INDEPENDENT SPEAKERS CONTROL IN
1dB STEPS FOR BALANCE FACILITY
- INDEPENDENT MUTE FUNCTION
s SUBWOOFER OUTPUT (L+R) CONTROLLED
IN 1dB STEP INPUTS
s ALL FUNCTIONS PROGRAMMABLE VIA
SERIAL BUS
DESCRIPTION
The TDA7429L is volume tone (bass middle and tre-
ble) balance (Left/Right) processors for quality audio
applications in TV and Hi-Fi systems, providing also
Figure 1. Test Circuit
SDIP42
ORDERING NUMBER: TDA7429L
an additional subwoofer control.
The AC signal setting is obtained by resistor networks
and switches combined with operational amplifiers.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are ob-
tained.
2.2µF
2.2µF
0.47µF
BASSO_R VAR_R BASSO_L VAR_L MONO INPUT
14
L+R OUTPUT 9
13
12 11
10
0.47µF
R_IN3
40
0.47µF
R_IN2
39
38
R_IN1
0.47µF
N.C.
N.C.
N.C.
N.C.
N.C.
1
2
3
4
7
LP
100nF
LP1
100nF
TREBLE_R
5.6nF
TREBLE_L
100nF
MONITOR_R
22nF
MIDDLE_LO
18nF
2.7K
MIDDLE_LI
22nF
MIDDLE_RO
18nF
2.7K
MIDDLE_RI
5
6
23
24
37
19
20
21
22
32
31 30 29 28 27
AUXOUT_L AUXOUT_R L_OUT R_OUT DIG_GND SCL
26
SDA
25
AGND
36 MONITOR_L
L_IN1
35
0.47µF
L_IN2
34
0.47µF
L_IN3
33
0.47µF
VS
42
10µF
100nF
CREF
41
22µF
8
HP2
220nF
100nF
15
BASS_LO
100nF
16
BASS_LI
5.6K
100nF
BASS_RO
17
100nF
18
BASS_RI
5.6K
D99AU1029
March 2000
1/16

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7429 equivalent
TDA7429L
Table 4. Electrical Characteristics
(refer to the test circuit Tamb = 25°C, VS = 9V, RL = 10K,Vin = 1Vrms; RG = 600, all controls flat
(G = 0dB), L+R CTRL = +4dB, MODE = OFF; f = 1KHz unless otherwise specified).
Symbol
Parameter
Test Conditio n
Min. Typ. Max. Unit
CONTROL L+R
CRANGE Control Range
- 11 +4 dB
SSTEP Step Resolution
0.5 1 1.5 dB
SPEAKER & AUX ATTENUATORS
CRANGE Control Range
79 dB
SSTEP Step Resolution
-0.5 1 1.5 dB
EA Attenuation set error
Av = 0 to -20dB
-1.5 0 1.5 dB
Av = -20 to -79dB
-3 0 2 dB
VDC DC Steps
adjacent att. steps
-3 0 3 mV
AMUTE Output Mute Condition
+70 100
dB
RVEA Input Impedance
21 30 39 K
AUDIO OUTPUTS
NO(OFF) Output Noise (OFF)
Output Mute, Flat
BW = 20Hz to 20KHz
4 µVrms
5 µVrms
d Distorsion
Av = 0 ; Vin = 1Vrms
0.01 0.1
%
SC Channel Separation
70 90
dB
VOCL Clipping Level
d = 0.3%
2 2.5
Vrms
ROUT Output Resistance
20 40 70
VOUT DC Voltage Level
3.8 V
MONITOR OUTPUTS
d Distorsion
Av = 0 ; Vin = 1Vrms
0.01 0.1
%
SC Channel Separation
70 90
dB
VOCL Clipping Level
d = 0.3%
2 2.5
Vrms
ROUT Output Resistance
20 50 70
VOUT DC Voltage Level
4.5 V
BUS INPUTS
VIL Input Low Voltage
1V
VIH Input High Voltage
3V
IIN Input Current
-5 +5 mA
VO Output Voltage SDA
Acknowledge
IO = 1.6mA
0.4 V
5/16


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On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for 7429 electronic component.


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