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UTC1240A - Electronic Dual Tone Ringer

Description

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).

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 DataSheet4U. com by external components.
  • Integrated rectifier bridge with zener diodes to protect DataShee TEST.

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Datasheet Details

Part number UTC1240A
Manufacturer Hangzhou Silan Microelectronics
File Size 225.81 KB
Description Electronic Dual Tone Ringer
Datasheet download datasheet UTC1240A Datasheet

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www.DataSheet4U.com UTC1240A DESCRIPTION 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 DC of 50 ohms is adviced. The two tone frequencies generated are switched by an 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 adjusted.
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