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Measurements & InstrumentationADC & Data Acquisition

For an ideal 8-bit ADC with a 0 to 5.12 V input range, the nominal LSB step size using 5.12/256 is?

  • A10 mV
  • B20 mV
  • C40 mV
  • D50 mV
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Correct Answer: B. 20 mV
Explanation: An 8-bit ADC has 256 code intervals in the common idealized calculation, so 5.12/256=0.02 V=20 mV.
Reference: Standard measurements and instrumentation: adc & data acquisition
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