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Counter Type ADC and Flash Type ADC

In a flash ty...

Question

In a flash type ADC, an analog input is to be converted into $4 -$ bit digital output, then number of op-amp comparators required in ADC will be _____
15

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Solution

The correct option is A 15
Op-amp comparators required in ADC for n-bit digital output
$= 2^{n} - 1$
$= 2^{4} - 1 = 15$

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