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

Manufacturer: Ericsson

Overview: PRELIMINARY May 1998 PBL 388 14 Voice - switched 2-channel Circuit with loudspeaker.

PBL38814 voice - switched 2-channel circuit with loudspeaker amplifier by Ericsson - Datasheet Preview

Datasheet Details

Part number	PBL38814
Manufacturer	Ericsson
File Size	239.32 KB
Description	Voice - switched 2-channel Circuit with loudspeaker amplifier
Download	PBL38814 Download (PDF)

General Description

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.

Key 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 loudspeakers up to several watts. Filtering is possible of both, the audio and the speech switching control signals, in both transmitter and receiver channels.
Key Features Minimum of external.

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