AS2521 Datasheet Telephone Speech Circuit With Loudhearing And Handsfree

Manufacturer: austriamicrosystems AG

Overview: Preliminary AS2520/21/20B/21B Telephone Speech Circuit with Loudhearing and Handsfree Austria Mikro Systeme International AG.

Datasheet Details

Part number	AS2521
Manufacturer	austriamicrosystems AG
File Size	96.70 KB
Description	Telephone Speech Circuit with Loudhearing and Handsfree
Datasheet	AS2521_austriamicrosystemsAG.pdf

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

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

A switching converter is also provided for converting the ring signal.

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.

Part Number	Description
AS2521B	Telephone Speech Circuit with Loudhearing and Handsfree
AS2520	Telephone Speech Circuit with Loudhearing and Handsfree
AS2520B	Telephone Speech Circuit with Loudhearing and Handsfree
AS2522B	Telephone Line Interface and Speakerphone Circuit
AS2523	Telephone Line Interface and Speakerphone Circuit
AS2524	Telephone Line Interface and Speakerphone Circuit
AS2524B	Telephone Line Interface and Speakerphone Circuit
AS2525	Single-Chip Handsfree Phone CMOS Integrated Circuit
AS2504	Cordless telephone / answering machine line interface
AS2507	SINGLE CHIP 2-WIRE INTERCOM CMOS INTEGRATED CIRCUIT