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.
