MAS9191A processor equivalent, single chip amps/etacs/namps audio/data processor.
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* Voice signal processing including compressor, expander, de-emphasis and pre-emphasis filters and digital gain adjustments DTMF a.
AMPS/ETACS Cellular phone NAMPS Cellular phone
BLOCK DIAGRAM
AMPLIFIER ANTI ALIASING GAIN CONTROL LOWPASS FI LTER HIGHP.
The MAS9191A is a high integration BeCMOS IC for implementing the audio and data signal processing in AMPS, ETACS or NAMPS cellular phones. The power consumption of the device is very low due to several automatic and software controlled power down mo.
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