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Analog ElectronicsNoise in Analog Circuits

Noise figure of an amplifier quantifies degradation of?

  • ASignal-to-noise ratio from input to output
  • BDC voltage gain only
  • CTransistor beta only
  • DOscillation frequency only
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Correct Answer: A. Signal-to-noise ratio from input to output
Explanation: Noise figure compares input and output SNR and indicates how much additional noise the amplifier effectively contributes.
Reference: Standard analog electronics: noise figure
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