IL2418 - ETC

IL2418 Telephone Tone Ringer with Bridge Diode

The IL2418 tone ringer derives its power supply by rectifying the AC ringing signal. It uses this power to activate two tone generators. The two tone frequencies generated are switched by internal oscillator in a fast sequence and made audible across an output amplifier in the loudspeaker; both tone frequencies and the switching frequency can be externally a.

Features

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• Internal zener diodes to protect against over voltages
• Ringer impedance adjustable with external components ORDERING INFORMATION IL2418N Plastic TA = -20° to 70° C for package PIN ASSIGNMENT BLOCK DIAGRAM 1 IL2418 MAXIMUM RATINGS
* (TA = 25°C) Symbol VTP VTP ICC Tstg
* Parameter Calling Voltage (f = 50 Hz) Continuous Calling Voltage (f = 50 Hz) 5 Sec ON/10 Sec OFF Supply Current Storage and Junction Temperature Value 120 200 22 -65 to +150 Unit Vrms Vrms mA °C Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restrict.