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Analog ElectronicsSwitched-Capacitor Circuits

A switched capacitor C operated at clock frequency f can emulate an equivalent resistance approximately equal to?

  • AC/f
  • Bf/C
  • C1/(Cf)
  • DCf
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Correct Answer: C. 1/(Cf)
Explanation: With average current I=CfV, comparison with I=V/R gives Req=1/(Cf).
Reference: Standard analog electronics: equivalent switched-capacitor resistance
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