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Counter Type ADC and Flash Type ADC

The number of...

Question

The number of comparators in a 4-bit flash ADC is

A

15

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B

4

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C

16

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D

5

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Solution

The correct option is A 15
No. of comparators in a flash ADC $= 2^{n} - 1$ .
$∵ n =$ no. of bits.
$∴$ No. of comparators $= 2^{4} - 1 = 15$

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