(Solved): 5. Design the NMOS common source Amplifier as shown in figure below. Given \( \mathrm{V}_{\mathrm{ ...

5. Design the NMOS common source Amplifier as shown in figure below. Given \( \mathrm{V}_{\mathrm{DD}}=15 \mathrm{~V}, \mathrm{R}_{\mathrm{D}}=470 \Omega, \mathrm{Vtn}=2.0 \mathrm{~V}, \mathrm{kn}=50 \mathrm{~mA} / \mathrm{V}^{2}, \mathrm{R} 1=200 \mathrm{~K} \Omega, \mathrm{R} 2=100 \mathrm{~K} \Omega, \mathrm{Rs}=100 \) \( \Omega \) a) Calculate ID V VS, VGS? b) The NMOS amplifier in the above figure is required to increase the output current from \( I_{D} \) to \( 1.8 I_{D} \). Is it possible to increase this drain current? Calculate the overdrive and drain voltage required. c) Redesign the amplifier circuit to accommodate \( 1.8 \mathrm{I}_{D} \) instead of \( I_{D} \) and design the values of those elements in the amplifier circuit that needs to be increased or decreased or unchanged? (Use same values of \( V_{D S} \) and \( V_{G S} \) obtained in part (a)). Draw a separate amplifier circuits with new values labeled.