TS2418 Series

Telephone Tone Ringer with Bridge Diode

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Version: A07

SOP-8

DIP-8

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 inexpensive transformer coupled speaker to produce a pleasing tone composed of a high

frequency (fR) alternating with a low frequency (fL) resulting in a warble frequency. The supply voltage is obtained

from the AC ring signal and the circuit is 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.

Package

Packing

TS2418CD C3

DIP-8

50pcs / Tube

TS2418CS RL

SOP-8

2.5Kpcs / 13” Reel

Block Diagram

Pin Definition:

1. Ring

5. TIP

2. Ground

7. RC

3. SRC

6. AVA

4. OFC

5. Output