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ST Microelectronics - BASIC FUNCTION AUDIO PROCESSOR

Numéro de référence TDA7433
Description BASIC FUNCTION AUDIO PROCESSOR
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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TDA7433 fiche technique
® TDA7433
BASIC FUNCTION AUDIO PROCESSOR
TWO STEREO AND ONE MONO INPUTS
CONTROLLED
MUTE FUNCTION (SOFTWARE AND HARD-
WARE)
VOLUME CONTROL IN 1dB STEP
FOUR SPEAKER ATTENUATORS:
– Independentattenuation control
– Independentmute function
ALL FUNCTIONS PROGRAMMABLE VIA
I2CBUS
DESCRIPTION
The TDA7433 is a volume, tone (bass and treble)
balance (Left/Right) processor for quality audio
applications in car radio and Hi-Fi systems.
Control is accomplished by serial bus microproc-
essor interface.
The AC signal setting is obtained by resistor net-
works and switches combined with operational
amplifiers.
BLOCK DIAGRAM
SO20
ORDERING NUMBER: TDA7433D
Thanks to the advanced BIPOLAR/CMOS Tech-
nology, the external components have been re-
duced.
IN1_L
IN2_L
6
3
MUX
VOL
4.7K
100nF
100nF
2.7nF
BINL
10
BOUTL
9
TRL
11
SPKR
ATT
16
LEFT FRONT
BASS
TREBLE
SPKR 14
ATT LEFT REAR
4
MONO IN/MUTE
S BUS DECODER + LATCHES
18
SCL
19
SDA
IN2_R
IN1_R
VS
2
5
17
MUX
SUPPLY
20
GND
VOL
1
CREF
BASS
TREBLE
SPKR
ATT
15
RIGHT FRONT
SPKR
ATT
13
RIGHT REAR
8
BINR
100nF
7
BOUTR
100nF
4.7K
12
TRR
2.7nF
D95AU354A
November 1999
1/10

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