Question

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

• A. nearly $23mV$
• B. nearly $50mV$
• C. nearly $100mV$
• D. nearly $5mV$

Answer 1

The correct option is D nearly $5mV$

If the ripple voltage is more than the resolution, it will go to next level.
Resolution $=\frac{V}{2^n}=\frac{5}{2^{10}}\simeq 5mV$