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ST Microelectronics - CAR RADIO SIGNAL PROCESSOR

Numéro de référence TDA7461ND
Description CAR RADIO SIGNAL PROCESSOR
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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TDA7461ND fiche technique
® TDA7461N
CAR RADIO SIGNAL PROCESSOR
HIGH PERFORMANCE SIGNAL PROCES-
SOR FOR CAR RADIO SYSTEMS
DEVICE INCLUDES AUDIO PROCESSOR,
STEREO DECODER, NOISEBLANKER AND
MULTIPATH DETECTOR
NO EXTERNAL COMPONENTS REQUIRED
FULLY PROGRAMMABLE VIA I2C BUS
LOW DISTORTION
LOW NOISE
DESCRIPTION
The TDA7461N is a high performance signal
processor specifically designed for car radio ap-
plications.
The device includes a complete audioprocessor
and a stereo decoder with noiseblanker,
stereoblend and all signal processing functions
necessary for state-of-the-art as well as future car
radio systems.
Switched-capacitors design technique allows to
obtain all these features without external compo-
BLOCK DIAGRAM
SO28
ORDERING NUMBER: TDA7461ND
nents or adjustments. This means that higher
quality and reliability walks alongside an overall
cost saving.
The CSP is fully programmable by I2C bus inter-
face allowing to customize key device parameters
and especially filter characteristics.
The BICMOS process combined with the opti-
mized signal processing assure low noise and
low distortion performances.
CDL CDG CDR
765
10
AM
CASS R
CASS L
3
4
9
PHONE
INPUT
MULTIPLEXER
+
AUTO ZERO
MIXING
STAGE
PHONE
BEEP
8
PH GND
LOUDNESS
VOLUME
SMUTE
17
SOFT
MUTE
TREBLE
DIGITAL CONTROL
28
BASS
27 1 2
23
OUT LR
OUT LR
25
OUT LF
OUT LF
22
OUT RR
OUT RR
24
OUT RF
OUT RF
I2C BUS
18
SCL
19
SDA
16
MUX R
15
MUX L
11
MPX
80KHz
LP
PILOT
CANCELLATION
DEMODULATOR
+ STEREO ADJUST
+ STEREO BLEND
25KHz
LP
S &H
HIGH
CUT
CONTROL
21
VS
SUPPLY
20 26
GND CREF
PLL
PIL
DET
MULTIPATH-
DETECTOR
13
MPIN
14
MPOUT
NOISE
BLANKER
PULSE
FORMER
D
A
12
LEVEL
D97AU646A
June 2000
1/31

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