TDA7430_04 Datasheet, PDF (1/23 Pages) STMicroelectronics – DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX AND VOICE CANCELLER

TDA7430
TDA7431
DIGITALLY CONTROLLED AUDIO PROCESSOR WITH
SURROUND SOUND MATRIX AND VOICE CANCELLER
1 FEATURES
■ 1 STEREO (4STEREO) INPUT + 1 MIXER
INPUT
■ INPUT ATTENUATION CONTROL IN 0.5dB
STEP
■ VOICE CANCELLER IS AVAILABLE
■ TREBLE MIDDLE AND BASS CONTROL
■ THREE SURROUND MODES ARE
AVAILABLE
– MUSIC: 4 SELECTABLE RESPONSES
– MOVIE AND SIMULATED:
256 SELECTABLE RESPONSES
■ 2 SPEAKERS AND 2 RECORD
ATTENUATORS:
– 2 INDEPENDENT SPEAKERS AND 2 INDE-
PENDENT RECORD CONTROL
IN 1dB STEP FOR BALANCE FACILITY
– AVAILABILITY OF LOUDSPEAKER EQUAL-
IZATION FIXED BY EXTERNAL COMPO-
NENTS
– INDEPENDENT MUTE FUNCTION
■ ALL FUNCTIONS PROGRAMMABLE VIA
SERIAL BUS
Figure 2. Pin Connection (TDA7430)
Figure 1. Package
SDIP42
TQFP44
Table 1. Order Codes
Part Number
TDA7431S
TDA7430
TDA7430TR
Package
SDIP42
TQFP44
Tape & Reel
2 DESCRIPTION
The TDA7430/TDA7431 is volume tone (bass middle
and treble) balance (Left/Right) processors voice
canceller for quality audio applications in car radio
and Hi-Fi systems.
They reproduce surround sound by using pro-
grammable phase shifters and a signal matrix.
Control of all the functions is accomplished by se-
rial bus. The AC signal setting is obtained by resis-
tor networks and switches combined with
operational amplifiers. Thanks to the used BIPO-
LAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained.
June 2004
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
R_IN1
MIX
L_IN1
L_IN2
L_IN3
L_IN4
RECOUT_L
RECOUT_R
L_OUT
R_OUT
DIG_GND
D95AU220B
REV. 10
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