A MOS Amplifier shown below has (W/L)1 = 10, (W/L)2 = 20, (W/L)3 = 10, IBIAS = 50 μA, VDD = 2.5 V, μnCox = 100 μA/V2, μpCox = 100 μA/V2, Vtn = Vtp = 0.5 V, λn = |λp| = 0.05 V−1, γ = 0. Note M1 is NMOS while M2 and M3 are PMOS transistors. Assume M1 and M2 transistors are in saturation. (a) Find the current in transistor M1 (Ignore the effect of channel length modulation and body effect) 4M (b) The small signal voltage gain Av. Consider effect of channel length modulation while ignoring body effect 6M