Chapter 11, Problem 11.3P

Consider the differential amplifier shown in Figure P 11.3 with transistor parameters $\beta =150,V_{BE}(\text{ on })=0.7\text{V},$ and $V_A=\infty .$ (a) Design the circuit such that the $Q$ -point values are $I_{C1}=I_{C2}=100\mu \text{A}$ and $v_{O1}=$ $v_{O2}=1.2\text{V}$ for $v_1=v_2=0.$ (b) Draw the dc load line and plot the $Q$ -point for transistor $Q_2.$ (c) What are the maximum and minimum values of the common-mode input voltage?