MAS9191A Overview
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 modes as well as the low power characteristics of the BeCMOS process. DTMF receiver is also included to enable answering machine functions for the cellular phone.
MAS9191A Key Features
- Voice signal processing including pressor, expander, de-emphasis and pre-emphasis filters and digital gain adjustments D