TS2418

1-4

2004/09 rev. A

TS2418

Telephone tone ringer with bridge diode

Supply Voltage 26V (max.)

Calling Voltage (f=50Hz) Continuous

General Description

The TS2418 is a monolithic integrated circuit telephone tone ringer with bridge diode, when coupled with an appropriate

transducer, it replaces the electromechanical bell. This device is designed for use with either a piezo transducer or an

designed so that noise on the line or variation of the ringing signal can not affect correct operation of the device.

Features

On chip high voltage full wave diode bridge rectifier.

Low current consumption, in order to allow the parallel

operation of the 4 devices.

Low external component count.

Tone and switching frequencies adjustable by external

components.

High noise immunity due to built-in voltage current

hysteresis.

Activation voltage adjustable.

Internal zener diodes to protect against over voltages.

Ringer impedance adjustable with external

components.

Ordering Information

Part No.

Operating Temp.

Package

TS2418CD

DIP-8

TS2418CS

-20 ~ +70

SOP-8

Block Diagram