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Problem 4 - The circuit shown is a cascod MOS amplifier. The transistors are identical with gm = 2.5 mA/V, I = 200 μA, and VA = 4 V. A) Find the output impedance of the amplifier, Rout. B) Find the amplifier voltage gain Av = Vo/vi. C ) For Vtn = 0.4 V and Vov = 0.2 V find the DC voltages V1 and the lowest DC output voltage Vo, where all the transistors stay in the saturated region.

Problem 4 - The circuit shown is a cascod MOS amplifier. The transistors are identical with gm = 2.5 mA/V, I = 200 μA, and VA = 4 V. A) Find the output impedance of the amplifier, Rout. B) Find the amplifier voltage gain Av = Vo/vi. C ) For Vtn = 0.4 V and Vov = 0.2 V find the DC voltages V1 and the lowest DC output voltage Vo, where all the transistors stay in the saturated region.

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Problem 4 - The circuit shown is a cascod MOS amplifier. The transistors are identical with g m = 2.5 m A / V , I = 200 μ A , and V A = 4 V . A) Find the output impedance of the amplifier, Rout. B) Find the amplifier voltage gain A v = V 0 / v i . C ) For V t n = 0.4 V and V o v = 0.2 V find the D C voltages V 1 and the lowest D C output voltage V 0 , where all the transistors stay in the saturated region.

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