Question 2: The CS amplifier stage shown below has a voltage gain of 15 at a bias current of 0.5 mA. Determine the required value of (W/L)2. [7.5-pts] λ1 = 0.15 V−1, λ2 = 0.05 V−1⋅μnCox = 200 μA/V2, μpCox = 100 μA/V2, |Vt| = 0.4 V for both PMOS and NMOS. Vb is a DC bias voltage. Assume both transistors below are in saturation.