TDA7429S Datasheet, PDF (1/20 Pages) STMicroelectronics – DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX

TDA7429S
®
TDA7429T
DIGITALLY CONTROLLED AUDIO PROCESSOR
WITH SURROUND SOUND MATRIX
3 STEREO/4 STEREO INPUTS
INPUT ATTENUATION CONTROL IN 0.5dB
STEP
TREBLE MIDDLE AND BASS CONTROL
THREE SURROUND MODES ARE AVAIL-
ABLE:
- MUSIC: 4 SELECTABLE RESPONSES
- MOVIE AND SIMULATED:
256 SELECTABLE RESPONSES
FOUR SPEAKERS ATTENUATORS:
- 4 INDEPENDENT SPEAKERS CONTROL
IN 1dB STEPS FOR BALANCE FACILITY
- INDEPENDENT MUTE FUNCTION
ALL FUNCTIONS PROGRAMMABLE VIA SE-
RIAL BUS
DESCRIPTION
The TDA7429 is volume tone (bass middle and
treble) balance (Left/Right) processors for quality
audio applications in TV and Hi-Fi systems.
PIN CONNECTION (TQFP44)
SDIP42
TQFP44
ORDERING NUMBERS:
TDA7429S
TDA7429T
It reproduces surround sound by using program-
mable phase shifters and a signal matrix. Control
of all the functions is accomplished by serial 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.
July 1999
LP1
HP1
HP2.
REAROUT
REARIN
VAR_L
BASSO_L
VAR_R
BASSO_R
BASS_LO
BASS_LI
44 43 42 41 40 39 38 37 36 35 34
1
33
2
32
3
31
4
30
5
29
6
28
7
27
8
26
9
25
10
24
11
23
12 13 14 15 16 17 18 19 20 21 22
MONITOR_R
MONITOR_L
L_IN1
L_IN2
L_IN3
L_IN4
AUXOUT_L
AUXOUT_R
L_OUT
R_OUT
DIG_GND
D96AU532
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