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Successive Approximation and Dual Slope Type ADC

Integrated ou...

Question

Integrated output waveform for the dual slope ADC is shown in the figure. The time T for an 8 bit counter with 4 MHz clock will be

A

0.64 ms

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B

0.032 ms

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C

0.024 ms

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D

0.064 ms

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Solution

The correct option is D 0.064 ms
$T i m e T = 2^{2} T_{C L K}$
$= \frac{2^{n}}{f} = \frac{2^{8}}{4 \times 10^{6}} = 64 μ s = 0.064 m s$

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