[PDF] What is KK2418 DATA? (811684)

The KK2418 is Telephone Tone Ringer made by Kodenshi.

Brief overview of the content in a KK2418 PDF file

TECHNICAL DATA Telephone Tone Ringer with Bridge Diode The KK2418 is a monolithic integrated circuit telephone tone ringer with bridge diode when coupled with an appropriate transducer it replaces the electro mechanical bell The 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 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 KK2418 ORDERING INFORMATION KK2418N Plastic DIP KK2418D SOIC TA 40 to 70 C for package PIN ASSIGNMENT BLOCK DIAGRAM 1 http www Datasheet4U c