The circuit parameters of the diff-amp shown in Figure 11.19 are V+ = 3 V, V− = −3 V, IQ =...

The circuit parameters of the diff-amp shown in Figure 11.19 are V+ = 3 V, V− = −3 V, IQ = 0.40 mA, and RD = 7.5 kΩ. The transistor parameters are VTN = 0.5 V,  = 100 μA/V2, and λ = 0. (a) Design the transistor W/L ratio such that the differential voltage gain is Ad = 12. (b) What is the maximum positive common-mode voltage that can be applied such that the transistors remain biased in the saturation region.