A range of low power CMOS LSI device for generating tunes for melody cards, toys and other novelty devices. The built-in oscillator and powerful driving capability minimises the number of external components required. In fact, all that is additionally needed is a 1.5V battery, a switch and an 8Ω speaker. The device can be powered from a wide range of supply voltages from 1.2V to 3.6V with low power consumption (note that the internal oscillator needs 1.3V to start).
Sixteen different tunes are available in a single device, as follows: