U4055B Datasheet (TEMIC Semiconductors) - Low-Voltage Electronic Speech Circuit

U4055B, Low-Voltage Electronic Speech Circuit

The U4055B electronic speech circuit is a linear integrated circuit for use in telephone and other line fed terminal equipment.

It replaces the common speech circuit with carbon microphone, hybrid transformer, sidetone equivalent and ear protection rectifiers.

A low-cost electrodynamic transducer is

U4055B Features

* www.DataSheet4U.com D An electronic circuit replaces the microphone hybrid transformer D Symmetrical input for dynamic or piezo microphone D High performance through the use of dynamic transducers as the earphone (non-linear distortion 2 %) D DTMF interface with muting D Supply voltage for dialer