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Electronic Devices & CircuitsBJT Amplifiers

At room temperature, a BJT biased at IC=1 mA has gm closest to, using VT≈25 mV?

  • A4 mS
  • B20 mS
  • C40 mS
  • D100 mS
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Correct Answer: C. 40 mS
Explanation: gm=IC/VT=1 mA/25 mV=0.04 S=40 mS.
Reference: Standard analog electronics: transconductance calculation
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