TDA7401 Datasheet, PDF (1/10 Pages) STMicroelectronics – DIGITALLY CONTROLLED AUDIO PROCESSOR WITH LOUDSPEAKERS EQUALIZER

®
TDA7401
DIGITALLY CONTROLLED AUDIO PROCESSOR
WITH LOUDSPEAKERS EQUALIZER
FOUR HIGH PASS CHANNELS
ONE STEREO LOW PASS CHANNEL WITH
GAIN CONTROL
DIRECT MUTE PIN
FULLY PROGRAMMABLE VIA I²C BUS
DESCRIPTION
The TDA7401 is an upgrade of the TDA7435
audioprocessor.
Due to a highly linear signal processing, using
CMOS-switching techniques very low distortion
and very low noise are obtained.
Second order high pass and low pass filters with
programmable corner frequencies provide the
loudspeaker equalization.
SO28
ORDERING NUMBER: TDA7401D
Very low DC stepping is obtained by using a
BICMOS technology.
BLOCK DIAGRAM
22
HP FL 1
21
HP FL 2
20
HP FR 1
19
HP FR 2
18
HP RL 1
17
HP RL 2
16
HP RR 1
15
HP RR 2
HP FILTER
HP FILTER
HP FILTER
HP FILTER
1
AUX 1 IN L
2
AUX 1 IN R
GAIN
+20/-79dB
MUTE
3
MUTE
SDA SCL DGND AGND CREF V_CC
27 26 25 24 23 28
I²C BUS
SUPPLY
12
OUT REF
MUX
10
HP FL OUT
11
HP FR OUT
13
HP RL OUT
14
HP RR OUT
9
AUX 2 OUT L
8
AUX 2 OUT R
45
CR1 CL1
7
6
CR2 CL2
D98AU822A
January 1999
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