PBL38814 Datasheet (Ericsson) - Voice - switched 2-channel Circuit with loudspeaker amplifier

PBL38814, Voice - switched 2-channel Circuit with loudspeaker amplifier

The PBL 388 14 contains all the necessary circuitry, amplifiers, detectors, comparator and control functions to implement a high performance voice switched handsfree two- way communication system.

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

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PBL38814 Features

* the power amplifiers volume control can be implemented either as an ac. potentiometer control or as a digital control by a µprocessor (dc. control) and that the feedback loop of the power amplifier is accessible thus making it possible to add a simple external power stage driving low impedance loud