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The SM1125ABV melody IC was designed for use in cell phones and pagers and is used for notification and alarms in battery operated equipment, operates from 2 to 3.6 volts, and outputs to a piezo-speaker. There are 12 selectable melodies and power down mode to converse battery life.

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Block Diagram

Key Features

  • 2.0~3.6V Supply Voltage
  • 0.6 mA (typ) current consumption
  • 12 melodies selectable
  • Monotone sound generation
  • 2-pin serial data melody selection and 1-pin melody
  • playback control
  • Level hold playback mode
  • Power save function stops the oscillator in no-play modes
  • Package: VSOP-8


  • Cell Phone
  • Industrial alert/event notification
  • Alarms


  • Stand along function lowers power consumption
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