The circuit parameters for the diff-amp shown in Figure 11.30 are V+= 3.3 V, V− = −3.3 V,...

The circuit parameters for the diff-amp shown in Figure 11.30 are V+= 3.3 V, V− = −3.3 V, and IQ = 0.4mA. The transistor parameters are β = 120, VAt = VA2 = 120 V, VA3 = VA4 = 80 V, and VA5 = ∞. (a) Determine the open-circuit differential-mode voltage gain, (b) What is the output resistance of the diff-amp? (c) Find the value of load resistance RL that reduces the differential-mode gain to 75 percent of the open-circuit value.