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دیتاشیت - STMicroelectronics - AUDIO SIGNAL PROCESSOR

شماره قطعه 6764
شرح مفصل AUDIO SIGNAL PROCESSOR
تولید کننده STMicroelectronics 
آرم STMicroelectronics 


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6764 شرح
® TDA7340G
AUDIO SIGNAL PROCESSOR
AUDIOPROCESSOR:
MUTE, SOFT MUTE AND ZERO CROSSING
MUTE
ONE DIFFERENTIAL, TWO STEREO AND
TWO MONO INPUTS
DIFFERENTIAL PHONE INPUT
VOLUME, BASS, TREBLE AND LOUDNESS
CONTROL
FOUR SPEAKER ATTENUATORS WITH IN-
DEPENDENT ATTENUATION CONTROL
STEREODECODER:
ROLL-OFF ADJUSTMENT
ADJUSTMENT FREE INTEGRATED 456KHz
VCO
HIGH CUT CONTROL
STEREO BLEND
NOISE BLANKER:
INTEGRATED HIGH-PASS FILTER
NOISE RECTIFIER OUTPUT FOR QUALITY
DETECTION
PROGRAMMABLE TRIGGER THRESHOLD
DEVIATION AND FIELD STRENGTH DE-
PENDENT TRIGGER ADJUSTMENT
PAUSE DETECTOR:
PROGRAMMABLE THRESHOLD
ALLFUNCTIONS PROGRAMMABLEVIA I2C BUS
DESCRIPTION
The TDA7340G I2C bus controlled audio signal
processor contains all signal processing blocks of
PQFP44
ORDERING NUMBER: TDA7340G
a high performance car radio, including audio-
processor, stereodecoder, noise blanker, pause
detector and different mute functions.
The use of BICMOS technology allows the imple-
mentation of several filter functions with switched
capacitor techniques like fully integrated, adjust-
ment free PLL Loop filter, pilot detector with inte-
grator and pilot cancellation.
This minimizes the number of external compo-
nents.
Due to a highly linear signal processing, using
CMOS-switching techniques instead of standard
bipolar multipliers, very low distortion and very
low noise are obtained also in the stereodecoder
part. The audioprocessor contains several new
features like softmute, zero-crossing mute and
pause detector.
Very low DC stepping is obtained by use of a
BICMOS technology.
September 1999
1/27

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