The IS22C022 eliminates the need of complicated circuitry in voice playback but still achieves high voice quality. Sounds such as human speech, animal sounds, musical sounds and even special sound effects can be synthesized. Versatile combinations in sections achieve longer playback duration. In addition, devices can be cascaded to achieve longer voice duration. Two devices can be configured in parallel in order to achieve signal mixing without an external mixer in which speech can be mixed with background music each from one of two different chips. The IS22C022 provides wide operating voltage range from 2.4V to 6.0V. PWM digital amplifier output pins, VOUT1 and VOUT2 provides direct drive to buzzer or speaker.