PBL38813 Datasheet (Ericsson) - Voice-switched Speakerphone Circuit with built in loudspeaker amplifier

PBL38813 - Voice-switched Speakerphone Circuit with built in loudspeaker amplifier

The PBL 388 13 contains all the necessary circuitry, amplifiers, detectors, comparator and control functions to implement a high performance, voice-switched, loudspeaking, ”hands-free ” telephone.

The gain dynamics (attenuation between channels) is selectable (25dB or 50dB) via a separate pin.

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PBL38813 Features

* Minimum of external components needed for function. Selectable gain dynamics. (25 or 50 dB) Direct telephone line powered solution (patented). Low power consumption: ≈1mA at 3.3V (typical) for speech switching, audio power amplifier quiscent current ≈1mA. Drives an 25 - 50 ohm loudspeaker without a