IL2418N IK Semiconductor, IL2418N Datasheet
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IL2418N
Manufacturer Part Number
IL2418N
Description
Manufacturer
IK Semiconductor
Datasheet
1.IL2418N.pdf
(3 pages)
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Telephone Tone Ringer with
Bridge Diode
The IN2418 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 (f
alternating with a low frequency (f
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
L
) resulting in a warble frequency.
BLOCK DIAGRAM
R
)
ORDERING INFORMATION
PIN ASSIGNMENT
TECHNICAL DATA
T
IN2418N Plastic
A
IN2418
= -20 to 70 C
for package
1
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IL2418N Summary of contents
Page 1
Telephone Tone Ringer with Bridge Diode The IN2418 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 ...
Page 2
IN2418 * MAXIMUM RATINGS (T Symbol V Calling Voltage ( Hz) Continuous TP V Calling Voltage ( Hz) 5 Sec ON/10 Sec OFF TP I Supply Current CC Tstg Storage and Junction Temperature * Maximum Ratings ...
Page 3
AC CHARACTERISTICS Symbol Parameter Output Frequencies Range H1 f Sweep Frequency L TEST AND APPLICATION CIRCUIT DESCRIPTION The IN2418 tone ringer derives its power supply by ...