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PBL38570 Datasheet Universal Speech Circuit

Manufacturer: Ericsson

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Datasheet Details

Part number PBL38570
Manufacturer Ericsson
File Size 238.00 KB
Description Universal Speech Circuit
Datasheet download datasheet PBL38570 Datasheet

General Description

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PBL 38570 is a monolithic integrated speech transmission circuit for use in electronic telephones.

It is designed to accomodate either a low impedance dynamic or an electret microphone.

Overview

September 1997 PBL 385 70 Universal Speech Circuit.

Key Features

  • Minimum number of external components, 7 capacitors and 11 resistors. Easy adaption to various market needs. Mute control input for operation with DTMF - generator. A separate input for DTMF tones controlled by mute. Transmitter and receiver gain regulation for automatic loop loss compensation. Extended current and voltage range 5 - 130 mA, down to 2 V. Differential microphone input for good balance to ground. Balanced receiver output stage. Stabilized DC - supplies for low current CM.

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