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U4055B Datasheet Low-voltage Electronic Speech Circuit

Manufacturer: TEMIC Semiconductors (now Microchip)

Overview: U4055B/U4055B1 Low-Voltage Electronic Speech Circuit with Dialer.

General Description

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

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

A low-cost electrodynamic transducer is used as the earphone.

Key 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 D High range of line feeding current D Input resistance independent of line current and sidetone suppression circuit. D Built-in ear protection by earphone voltage limiter D Operation possible from 8.

More Datasheets from TEMIC Semiconductors (now Microchip)

Part Number Description
U4055B1 Low-Voltage Electronic Speech Circuit
U4050B Speech Circuit
U4030B Telephone Speech Circuit
U4070B-FP Tone Ringer Interface
U4074B Tone Ringer Interface
U4076B Three-Tone Ringer for Telephone Sets
U4076B-FL Three-Tone Ringer for Telephone Sets
U4080B Voice-Switched Circuit for Handsfree Operation
U4083 Low-Power Audio Amplifier for Telephone Applications
U4083B Low-Power Audio Amplifier for Telephone Applications

U4055B Distributor