This application note is an introduction to the use of the high-speed Pulse Width Modulator (PWM) available in some Atmel® tinyAVR® microcontrollers such as Atmel ATtiny26, Atmel ATtiny15, etc.
The advantage of high-speed PWM is the increased bandwidth of the analog output signal. The high frequency further allows for smaller and less expensive filter components to be used in shaping the signal.