Consider the gain stage shown, where Ibias = 200 μA and all transistors have W/L = 20 μm/0.4 μm. μnCox = 270 μA/V2 VTN = 0.45 V, μpCox = 70 μA/V2, VTP = −0.45 VV′ = 12.5 V/μm. Given the transistor parameters for the 0.18 μm technology, a. (25 pts) Find the output Impedance Rout. (Hint: Rout = V′AL/Id) b. (25 pts) Find the gain from the differential input to the output, Vout/Vin.