7429 Datasheet

  • 7429

  • 3 BAND EQUALIZER AUDIO PROCESSOR WITH SUBWOOFER CONTROL

  • 116.91KB

  • 16页

  • STMICROELECTRONICS   STMICROELECTRONICS

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TDA7429L
3 BAND EQUALIZER AUDIO PROCESSOR
WITH SUBWOOFER CONTROL
s
s
s
3 STEREO INPUTS
AUXILIARY MONO INPUT
INPUT ATTENUATION CONTROL IN 0.5dB
STEP
TREBLE MIDDLE AND BASS CONTROL
FOUR SPEAKERS ATTENUATORS:
- 4 INDEPENDENT SPEAKERS CONTROL IN
1dB STEPS FOR BALANCE FACILITY
- INDEPENDENT MUTE FUNCTION
SUBWOOFER OUTPUT (L+R) CONTROLLED
IN 1dB STEP INPUTS
ALL FUNCTIONS PROGRAMMABLE VIA
SERIAL BUS
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.
SDIP42
ORDERING NUMBER:
TDA7429L
s
s
s
s
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
2.2碌F
2.2碌F
0.47碌F
BASSO_R
L+R OUTPUT
N.C.
N.C.
N.C.
N.C.
N.C.
LP
100nF
9
1
2
3
4
7
5
34
33
42
35
14
VAR_R
13
BASSO_L
12
VAR_L
11
MONO INPUT
10
0.47碌F
R_IN3
40
0.47碌F
R_IN2
39
38
36
R_IN1
0.47碌F
MONITOR_L
L_IN1
0.47碌F
L_IN2
L_IN3
V
S
10碌F
0.47碌F
0.47碌F
LP1
6
100nF
5.6nF
100nF
TREBLE_R
TREBLE_L
23
24
41
8
37
15
19
20
16
HP2
BASS_LO
CREF
22碌F
220nF
100nF
100nF
MONITOR_R
22nF
18nF
MIDDLE_LI
22nF
MIDDLE_RO
MIDDLE_RI
21
22
32
31
30
29
R_OUT
28
27
26
SDA
25
AGND
MIDDLE_LO
100nF
BASS_LI
100nF
2.7K
5.6K
17
BASS_RO
18nF
2.7K
100nF
18
BASS_RI
5.6K
AUXOUT_L AUXOUT_R L_OUT
DIG_GND SCL
D99AU1029
March 2000
1/16

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