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Counter Type ADC and Flash Type ADC

An analog sig...

Question

An analog signal has to be converted into 3-bit digital output using flash ADC, then number of op-amp comparators required in analog to digital converter will be _____.
7

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Solution

The correct option is A 7
Op-amp comparators required in ADC for n-bit digital output

$= 2^{n} - 1$

$= 2^{3} - 1 = 7$

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