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The NMOS transistor in the circuit below has μnCox = 0.4 mA/V2, W/L = 25, and Vt = 0.4 V. (a) Find the value of VGS that results in saturation mode operation with a dc current of ID = 0.1 mA. Neglect the Early effect. (b) Find the value of RD that results in a dc drain voltage of 0.5 V. (c) Find gm and ro at the dc operating point specified above. Assume VA = 5 V. (d) Find the open-circuit voltage gain Avo. (e) If a sinusoidal signal with peak amplitude v^i is superimposed on the dc voltage VGS, find the maximum allowable value of v^i for which the transistor operates in saturation.

The NMOS transistor in the circuit below has μnCox = 0.4 mA/V2, W/L = 25, and Vt = 0.4 V. (a) Find the value of VGS that results in saturation mode operation with a dc current of ID = 0.1 mA. Neglect the Early effect. (b) Find the value of RD that results in a dc drain voltage of 0.5 V. (c) Find gm and ro at the dc operating point specified above. Assume VA = 5 V. (d) Find the open-circuit voltage gain Avo. (e) If a sinusoidal signal with peak amplitude v^i is superimposed on the dc voltage VGS, find the maximum allowable value of v^i for which the transistor operates in saturation.

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(25 points) The NMOS transistor in the circuit below has μ n C o x = 0.4 m A / V 2 , W / L = 25 , and V t = 0.4 V . (a) Find the value of V G S that results in saturation mode operation with a dc current of I D = 0.1 m A . Neglect the Early effect. (b) Find the value of R D that results in a dc drain voltage of 0.5 V . (c) Find g m and r o at the dc operating point specified above. Assume V A = 5 V . (d) Find the open-circuit voltage gain A v o . (e) If a sinusoidal signal with peak amplitude v ^ i is superimposed on the dc voltage V G S , find the maximum allowable value of v ^ i for which the transistor operates in saturation.

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