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Assume the drain current of M1 is I1, and the current source IS = 0.75I1. (3) For Fig. 2b, which region does M2 work in? (4) For Fig. 2b, Provide a symbolic expression for the small-signal gain of the amplifier using Vov 1 and Vov2 , which are the overdrive voltage of M1 and M2, respectively. (5) What is the advantage of the amplifier in Fig. 2(b) over Fig. 2(a)?

Assume the drain current of M1 is I1, and the current source IS = 0.75I1. (3) For Fig. 2b, which region does M2 work in? (4) For Fig. 2b, Provide a symbolic expression for the small-signal gain of the amplifier using Vov 1 and Vov2 , which are the overdrive voltage of M1 and M2, respectively. (5) What is the advantage of the amplifier in Fig. 2(b) over Fig. 2(a)?

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Assume the drain current of M1 is I1, and the current source IS = 0.75I1. (3) For Fig. 2b, which region does M2 work in? (4) For Fig. 2b, Provide a symbolic expression for the small-signal gain of the amplifier using Vov 1 and Vov2 , which are the overdrive voltage of M1 and M2, respectively. (5) What is the advantage of the amplifier in Fig. 2(b) over Fig. 2(a)?

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