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A common-drain amplifier is shown. The circuit parameters are RS = 4 kΩ, R1 = 850 kΩ, R2 = 350 kΩ and RL = 4 kΩ. The transistor parameters are VTP = −1,2 V, kp′ = 40 μA/V2, W/L = 80 and λ = 0,05 V−1. a) Determine IDQ and VSDQ. b) Determine the small-signal voltage gain Av = vo/vi. c) Determine the small-signal circuit transconductance Ag = io/vi. d) Find the small-signal output resistance Ro.

A common-drain amplifier is shown. The circuit parameters are RS = 4 kΩ, R1 = 850 kΩ, R2 = 350 kΩ and RL = 4 kΩ. The transistor parameters are VTP = −1,2 V, kp′ = 40 μA/V2, W/L = 80 and λ = 0,05 V−1. a) Determine IDQ and VSDQ. b) Determine the small-signal voltage gain Av = vo/vi. c) Determine the small-signal circuit transconductance Ag = io/vi. d) Find the small-signal output resistance Ro.

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A common-drain amplifier is shown. The circuit parameters are R S = 4 k Ω , R 1 = 850 k Ω , R 2 = 350 k Ω and R L = 4 k Ω . The transistor parameters are V T P = − 1 , 2 V , k p ′ = 40 μ A / V 2 , W / L = 80 and λ = 0 , 05 V − 1 . a) Determine I D Q and V S D Q . b) Determine the small-signal voltage gain A v = v o / v i . c) Determine the small-signal circuit transconductance A g = i o / v i . d) Find the small-signal output resistance R o .

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