廬
TDA7462
DUAL AUDIOPROCESSOR WITH COMPANDER
AND SUBWOOFER OUTPUT
FULLY INTEGRATED AUDIOPROCESSOR
5 STEREO + 1 MONO INPUTS
FOUR INDEPENDENT SPEAKER OUTPUTS
DYNAMIC COMPRESSION STAGE FOR CD
SUBWOOFER OUTPUT
SOFTSTEP FEATURE FOR VOLUME
VOICE-BAND FILTER
DIRECT MUTE AND SOFTMUTE
PAUSE DETECTOR
FULLY PROGRAMMABLE BY I
2
C BUS IN-
TERFACE
DESCRIPTION
The TDA7462 is a high performance audioproc-
essor with fully integrated audio filters. The digi-
tal control allows the programming of all filter
characteristics in a wide range without the need
of external components. New innovative features
are included , a dynamic compression stage to
BLOCK DIAGRAM
SO28
ORDERING NUMBER:
TDA7462D
optimize audio response of CD sources an addi-
tional output channel for subwoofer and a sepa-
rate source selector for rear channel. The use of
a dedicated BICMOS process makes signal proc-
essing very linear thus achieving low distortion
and low noise figures.
CD R+ CD L- CD L+
8
7
9
10
11
1
2
13
12
3
4
28
27
REAR
SELECTOR
INPUT
MULTIPLEXER
+ MIXING-STAGE
IN-GAIN
FRONT
SELECTOR
COMPANDER
6
5
IN-GAIN +
AUTO ZERO
MUTE
26
SOFT
MUTE
VOICE-BANDPASS
TREBLE
BASS
HP
LP
FRONT
FADER
FRONT
FADER
REAR
FADER
REAR
FADER
22
CD R-
PDR
PDGND
PDL
SE1L
SE1R
SE2R
SE2L
MD+
MD-
SEM/SE3L
SE3R
LOUDNESS
VOLUME
OUT LF
21
OUT RF
19
OUT RR
LOUDNESS
20
OUT RL
18
SUBWOOFER
LP
MONO
FADER
SUBWOOFER
OUT
17
SUBOUT+
SUBOUT-
PAUSE
23
25
PAUSE
DETECT.
BEEP
DIGITAL CONTROL
I
2
C BUS
24
SDA
SCL
SUPPLY
16
V
S
15
GND
14
CREF
D96AU864
November 2001
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