TEA1085A Datasheet - NXP

TEA1085A Line-powered Telephone Listening-in

The TEA1085 and TEA1085A are bipolar ICs which have been designed for use in line-powered telephone sets and provide a listening-in facility for the received line signal via a loudspeaker. Nearly all the line current can be used for powering the loudspeaker. The circuits incorporate a supply circuit.

TEA1085A Features

* Internal supply optimum current split-up - low constant current (adjustable) in transmission IC - nearly all line current available for listening-in adjustable supply voltage

* Loudspeaker amplifier dynamic limiter providing low distortion and the highest possible output power SE o

TEA1085A_PhilipsSemiconductors.pdf