PBL38812 Datasheet (Ericsson) - Voice-switch circuit for Handsfree speakerphone TAM

PBL38812, Voice-switch circuit for Handsfree speakerphone TAM

The PBL 388 12 contains all the necessary circuitry, amplifiers, detectors, comparators and control functions to implement a high performance, voice-switched, ”hands-free ” function in an answering machine.

The gain dynamics (attenuation between channels) is settable (25dB or 50dB) via CTR pin that

PBL38812 Features

* Settable gain dynamics (25 or 50 dB).

* Low power consumption, totally 1.0mA at 3.3V typical.

* Background noise compensation in the transmitting channel with hold function.

* Exellent noise performance.

* Both channel input amplifiers have balanced inputs.