SINGLE SOUND GENERATOR
DESCRIPTION
The UTC 1812A/1812B/1813 is a CMOS LSI chip designed for
use in sound effect products .It is equipped with tone circuit, noise
circuit and other control logic to generate different sounds
including rifle gun, machine gun, booming sound, door bell, alarm etc.
The customer supplied sound source can be analyzed and
programmed into an internal ROM by changing a mask layer
during device fabrication. The UTC 1812A/1812B/1813 is suitable for various toy applications.
FEATURES
*Single power supply: 2.4~3.3V
*Low standby current at 3V, 1μA typ
*Auto power-off function
*Speaker or direct piezo. application
*Built-in envelope control circuit
*1Hz-8Hz programmable LED flash output
*Minimum external components
*Low operating current
*Strong driving capability
APPLICATION CIRCUIT
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