Question

The type of A/D converter normally used in a 3 ½ digit multimeter is

• A. voltage to frequency converter type
• B. flash type
• C. successive approximation type
• D. dual slope integrating type

Hint:

Dual slope ADCs are preferred in multimeters for their precision and noise immunity.

Answer 1

The Correct Option is D

Dual slope integrating type A/D converters are known for high accuracy and noise rejection, making them ideal for use in digital multimeters. They integrate the input signal over a fixed time period and then measure the time it takes to return to zero using a reference voltage.