Chapter 4, Problem 4.6TYU

Consider the common−source amplifier in Figure 4.24 with transistor parameters $V_{TN}=1.8\text{V}$ , $K_n=0.15{\text{mA/V}}^{\text{2}}$ , and $\lambda =0$ . (a) Calculate $I_{DQ}$ and $V_{DSQ}$ . (b) Determine the small−signal voltage gain. (c) Discuss the purpose of $R_G$ and its effect on the small−signal operation of the amplifier. (Ans. (a) $I_{DQ}=1.05\text{mA,}{V}_{DSQ}=4.45\text{V}$ ; (b) $A_{\upsilon }=-2.65$ )

Figure 4.24 Figure for Exercise TYU 4.6