2. (25 points) Consider a CMOS common-source amplifier below, let W/L = 8.4 um/0.42 umfor all transistors, k, = 4.5k; = 400 µA/V², Ia - 100µA. Vipl = 1.2Vi =

6 V/um. Findgai, Fel, Fat and the voltage gain.%3D