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Analog and Digital Converters

Q1:

What is the resolution of a digital-to-analog converter (DAC)?

A It is the comparison between the actual output of the converter and its expected output.

B It is the deviation between the ideal straight-line output and the actual output of the converter.

C It is the smallest analog output change that can occur as a result of an increment in the digital input.

D It is its ability to resolve between forward and reverse steps when sequenced over its entire range.

ANS:C - It is the smallest analog output change that can occur as a result of an increment in the digital input.

The resolution of a DAC is given by the number of bits, N. The resolution is the smallest increment of output that the DAC can produce. An 8-bit, DAC has a resolution of 8 bits, or one part in 28. This results in a percentage of 0.39%.



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