AD/DA conversion

For a 10-bit AD converter with a full-scale input of 1.024 V, what voltage corresponds to 1 LSB?

  1. A0.1 mV
  2. B1 mV
  3. C10 mV
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Answer: B. 1 mV

Ten bits give 2¹⁰ = 1024 levels, so 1 LSB = 1.024 V ÷ 1024 = 1 mV. With 12-bit resolution and the same full scale, 1 LSB would be 0.25 mV.

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More AD/DA conversion questions

  1. What type of filter is used as the anti-aliasing filter placed before an AD converter?
  2. Which is a characteristic of an R-2R ladder DA converter?
  3. What is the role of a sample-and-hold circuit placed before an AD converter?
  4. Which is the approximate formula for the signal-to-noise ratio (SNR) of an ideal N-bit AD converter, set by quantization noise? (For a full-scale sine-wave input)
  5. Which is a characteristic of the dual-slope AD converter often used in digital multimeters?