Topic: Digital Electronics
A 10-bit DAC has a step size of 10 mV. What is its Full scale output voltage and the percentage resolution?
- A. 10.24 V, 0.2%
- B. 10.23 V, 0.5%
- C. 10.23 V, 0.1%
- D. 10.24 V, 0.1%
Answer: C. 10.23 V, 0.1%
Explanation: Full Scale Voltage $V_{FS} = (2^{n}-1) \times \text{Step size} = (2^{10}-1) \times 10~\text{mV} = (1024-1) \times 0.01~\text{V} = 10.23~\text{V}$.
Percentage Resolution $= \frac{\text{Step Size}}{V_{FS}} \times 100 = \frac{10~\text{mV}}{10.23~\text{V}} \times 100 = 0.0977\% \simeq 0.1\%$.