Preliminary Data Sheet

AS2504

1/12

August 1998

®

Austria Mikro Systeme International AG

Cordless telephone, answering

machine line interface

Key Features

for a/b terminals on a 28-pin CMOS-IC

Ω)

Ω)

(down to 5mA with reduced performance)

option

external components

components

General Description

AS2504 is a CMOS integrated circuit that

incorporates DC and AC line adaptation (DC-

mask

and

synthesised

AC-impedance

of

1000

Ω) as well as a speech circuit with

softclipping, line loss compensation and Rx-

volume control. It shall act as an a/b-line

powered or auxiliarily powered device, which is

controlled by a CPU.

Application

Cordless base stations, answering machines,

a/b-line or auxiliary powered telephone sets.

Package

Available in 28 pin SOIC

Block Diagram