What is the input resistance of the amplifier


Response to the following question:

A CG amplifier using an NMOS transistor for which g m =2 mA/V has a 5-k Ω drain resistance RD and a 5-kΩ load resistance RL. The amplifier is driven by a voltage source having a 750-_ resistance. What is the input resistance of the amplifier? What is the overall voltage gain Gv ? By what factor must the bias current ID of the MOSFET be changed so that Rin matches Rsig?

 

 

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Electrical Engineering: What is the input resistance of the amplifier
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