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Digital ElectronicsADC & DAC

For an ideal R-2R ladder DAC, one major practical advantage over a binary-weighted-resistor DAC is that the ladder requires?

  • AOnly two resistor values
  • BNo resistors
  • CA different resistor for every possible code
  • DOnly capacitors
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Correct Answer: A. Only two resistor values
Explanation: An R-2R ladder is constructed using only R and 2R values, simplifying resistor matching and IC implementation compared with a wide range of binary-weighted resistor values.
Reference: Standard digital electronics: R-2R DAC
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