UTC1240A Overview
LI NEAR I NTEGRATED CI RCUI T ELECTRONIC DUAL-TONE RINGER The UTC1240A are monolithic integrated circuits designed to replace the mechanical bell in telephone sets in connection with an electro-acoustical converter.Both devices can drive directly a piezoceramic converter (buzzer). The output of UTC1240A needs a decoupling capacitor. No current limitation is provided on the output stage of UTC1240A,so a minimum load...
UTC1240A Key Features
- Low current consumptioin,in order to allow the parallel operation of 4 devices. against overvoltage
- Little external circuitry
- Tone and switching frequencies adjustable
- Intergrated voltage and current hysteresis
- Integrated rectifier bridge with zener diodes to protect