Question

This NMOS transistor has unCox= 0.2mA/V, W/L = 20, and Vt=0.5V. Neglect the Early effect. (a) Find the value of Vas that results in saturation mode operation with a dc

current of 0.2mA. (b) Find the value of Rothat results in a dc drain voltage of 0.7V. (c) Find gm and ro at the dc operating point specified above. Assume VA = 150V.%3D (d) Find the open-circuit voltage gain Avo. (e) If a sinusoidal signal with peak amplitude V is superimposed on the dc voltage Vas, find the maximumallowable value of Vi for which the transistor operates in saturation.

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