Chapter 7, Problem 7.68P

The bias voltages of the circuit shown in Figure P7.67 are changed to $V^{+}=3\text{V}$ and $V^{-}=-3\text{V}$ . The input resistances are $R_i=4\text{kΩ}$ and $R_G=200\text{kΩ}$ . The transistor parameters are $K_P\text{=0}{\text{.5mA/V}}^2$ , $V_{TP}=-0.5\text{V}$ , $\lambda =0$ , $C_{gs}=0.8\text{pF}$ , and $C_{gd}=0.08\text{pF}$ . (a) Design the circuit such that $I_{DQ}\text{=0}\text{.5mA}$ and $V_{SDQ}=2\text{V}$ . (b) Find the midband voltage gain. (c) Determine the equivalent Miller capacitance. (d) Find the upper 3dB frequency.