Q. Sample – and – hold circuits in analog to digital converters (ADCs) are designed to :

A
Sample and hold the output of the binary counter during the conversion process
B
Stabilize the input analog signal during the conversion process
C
Sample and hold the D/A converter staircase waveform during the conversion process
D
Stabilize the comparator's threshold voltage during the conversion process
Solution:

In electronics, a sample and hold (S/H, also “follow-and-hold”) circuit is an analog device that samples (captures, takes) the voltage of a continuously varying analog signal and holds (locks, freezes) its value at a constant level for a specified minimum period of time. Sample and hold circuits are typically used in analog-to-digital converters to eliminate variations in input signal that can corrupt the conversion process.

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