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Analog ElectronicsDifferential Amplifiers

A differential amplifier ideally amplifies?

  • AThe average of its inputs
  • BThe difference between its input voltages
  • COnly the supply voltage
  • DOnly common-mode signals
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Correct Answer: B. The difference between its input voltages
Explanation: A differential amplifier responds to the difference between its two input voltages.
Reference: Standard analog electronics: differential amplifiers
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