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Digital ElectronicsADC & DAC

A successive-approximation ADC determines the digital output primarily by?

  • ATesting bits through a binary-search-like sequence
  • BCounting indefinitely until power is removed
  • CUsing only one fixed comparator threshold with no DAC
  • DDirectly storing the analog voltage as binary charge
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Correct Answer: A. Testing bits through a binary-search-like sequence
Explanation: A SAR ADC successively tests candidate bits, effectively performing a binary search using an internal DAC and comparator.
Reference: Standard digital electronics: SAR ADC
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