Topic: Digital Electronics
An 8 bit ADC has a full scale input of 2.55 V. If other cumulative errors are 2.55 mV, determine the maximum error
- A. 10 mV
- B. 12.55 V
- C. 7.45 mV
- D. 2.55 mV
Answer: B. 12.55 V
Explanation: Resolution = $\frac{V_{FS}}{D}$ ($\because D=255(11111111)_b$)\n$= \frac{2.55}{255} = 10~mV$\nmaximum error = cumulative error + resolution\n$= (2.55 + 10)mV = 12.55~mV$