Low Operating
Voltage (4.5 V) Single Chip Speakerphone No External Adjustments Smooth T/R
Switching Background Noise Detection and Suppression On-chip Hybrid Circuit
GND
BIAS Vee TXTJ
RXT J
TXM OUT
TxLOUT Tx GNF TXG OUT TXS IN DTMFIN VOL Tx eOMP
Vo...