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Counter Type ADC and Flash Type ADC

The number of...

Question

The number of comparators required in an 8-bit flash-type A/D converter is

A

255

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B

256

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C

5

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D

(8+2)

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Solution

The correct option is A 255
Number of comparators $= 2^{n} - 1 = 2^{8} - 1$
$= 256 - 1 = 255$
Where, n = number of bits of an ADC

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