A/D and D/A

A/D
The Analog to Digital (A/D) converter is an on-chip module that periodically samples external analog signals and produces corresponding digital values. The A/D converter is typically used to measure analog inputs like motor speed, temperature, and pressure or fluid levels.

D/A
The Digital to Analog (D/A) module accepts a series of binary numbers from the CPU and produces a corresponding analog signal. This is usually performed by pulse width modulation (PWM) that requires external filtering. A typical example of a D/A application would be the volume control on a television set.

last update: 10JUL1997