Question

Adder type digital to analog converter

Answer 1

Answer:

Digital to analog converter is used to convert digital quantity into analog quantity. DAC converter produces an output current of voltage proportional to digital quantity (binary word) applied to its input. Today microcomputers are widely used for industrial control. The output of the microcomputer is a digital quantity. In many applications the digital output of the microcomputer has to be converted into analog quantity which is used for the control of relay, small motor, actuator e.t.c. In communication system digital transmission is faster and convenient but the digital signals have to be converted back to analog signals at the receiving terminal. DAC converters are also used as a part of the circuitry of several ADC converters.

There are several ways of making a digital to analog converter. Some of them are given as under.

Binary weighted resistor DAC

R-2R Ladder network

Serial DAC converter

BCD DAC

Bipolar DAC