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Discharging of Capacitors

For a 4-bit d...

Question

For a 4-bit digital to analog convertor, analog voltage varies from 0 to 1.5 volts. The resolution of DAC is

A

10%

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B

6.25%

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C

6.67%

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D

9.375%

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Solution

The correct option is C 6.67%
% Resolution $= \frac{1}{2^{N} - 1} \times 100 %$
$= \frac{1}{2^{4} - 1} \times 100 % = \frac{100}{15} = 6.67 %$

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