A 10 bit A/D converter is used to digitise an analog signal in the 0 to 5 V range. The maximum peak to ripple voltage that can be allowed in the D.C. supply voltage is
- A. nearly 100 mV
- B. nearly 50 mV
- C. nearly 25 mV
- D. nearly 5.0 mV
Answer: D. nearly 5.0 mV
Explanation: Resolution of 10-bit ADC = Vfs / (2^10 - 1) = 5 V / 1023 ≈ 4.88 mV ≈ 5.0 mV.