M8031 ding dong circuit diagram

This electronic circuit diagram is a ding-dong sound effect generator electronic device based on the M8031 circuit designed using CMOS technology.
The circuit M8031 has a built-in RC oscillator and digital envelope circuits that make it to require few external components . The sound generated by the M8031 simulate an mechanical ding-dong sound. The M8031 operates from a low input voltage from 1.3 to 3.3 volts requiring low current . The integrated circuit is ideal for door bell application.