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AS2520 - Telephone Speech Circuit with Loudhearing and Handsfree

Datasheet Summary

Description

The AS2520/21/20B/21B are CMOS integrated circuits that contain all the audio functions needed to form a high comfort, line-powered telephone.

The devices incorporate line adaptation, speech circuit, loudhearing and handsfree - all supervised by the novel voice and power control circuit.

Features

  • u Line/speech circuit, loudhearing, handsfree and dc/dc converter on one 28 pin CMOS chip u Operating range from 13 to 100 mA (down to 5 mA with reduced performance) u Soft clipping control eliminating harsh distortion u Volume control of receive signal with squelch and automatic loop gain compensation u Line loss compensation pin selectable u Low noise (max. - 72 dBmp) u Real or complex impedance adjustable u NET 4 compatible u Dynamically controlled voice switching u Same monitor amplifier for.

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Datasheet preview – AS2520

Datasheet Details

Part number AS2520
Manufacturer austriamicrosystems AG
File Size 96.70 KB
Description Telephone Speech Circuit with Loudhearing and Handsfree
Datasheet download datasheet AS2520 Datasheet
Additional preview pages of the AS2520 datasheet.

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Other Datasheets by austriamicrosystems AG
  • AS2520B - Telephone Speech Circuit with Loudhearing and Handsfree
  • AS2521 - Telephone Speech Circuit with Loudhearing and Handsfree
  • AS2521B - Telephone Speech Circuit with Loudhearing and Handsfree
  • AS2522B - Telephone Line Interface and Speakerphone Circuit
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Full PDF Text Transcription

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Preliminary AS2520/21/20B/21B Telephone Speech Circuit with Loudhearing and Handsfree Austria Mikro Systeme International AG Key Features u Line/speech circuit, loudhearing, handsfree and dc/dc converter on one 28 pin CMOS chip u Operating range from 13 to 100 mA (down to 5 mA with reduced performance) u Soft clipping control eliminating harsh distortion u Volume control of receive signal with squelch and automatic loop gain compensation u Line loss compensation pin selectable u Low noise (max.
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