GATE EE 1993 Digital Electronics Q 1 - Grad Plus
GATE EE 1993 Digital Electronics Q 1

GATE EE 1993 Digital Electronics Q 1

A 10 bit A/D converter is used to digitize an analog signal in the 0 to 5 V range. The maximum peak to peak ripple voltage that can be allowed in the dc supply voltage is

(a) nearly 100 mV

(b) nearly 50 mV

(c) nearly 25 mV

(d) nearly 5 mV

Ans: (d)

Explanation

Maximum allowed ripple voltage is the resolution.

\mathrm{Resolution}=\frac{\mathrm V}{2^{\mathrm n}}=\frac5{2^{10}}\simeq5\;\mathrm{mV}
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