PBL38570 Description
PBL 38570 is a monolithic integrated speech transmission circuit for use in electronic telephones. It is designed to acodate either a low impedance dynamic or an electret microphone. A separate input for DTMF dialling tones that is controlled by a mute signal, and a signal summing point at the transmitter input, are available.
PBL38570 Key Features
- Minimum number of external ponents, 7 capacitors and 11 resistors. Easy adaption to various market needs. Mute control i
- generator. A separate input for DTMF tones controlled by mute. Transmitter and receiver gain regulation for automatic lo
- 130 mA, down to 2 V. Differential microphone input for good balance to ground. Balanced receiver output stage. Stabilize
- supplies for low current CMOS diallers and electret microphones. 18
- pin DIP and 20
- pin SO packages. Short start up time. Excellent RFI performance