(a) Using quantitative analysis, derive the voltage gain of differential pair, assuming the circuit to be symmetric and both transistors M1 and M2 are saturated. (b) In the circuit shown in Fig. 2, (W/L)1,4 = 50/0.5 and ISS = 1 mA : Fig. 2 (i) What is the small-signal differential gain? (ii) For Vin, CM = 1.5 V, what is the maximum allowable output voltage swing?
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(a) Using quantitative analysis, derive the voltage gain of differential pair, assuming the circuit to be symmetric and both transistors M1 and M2 are saturated. (b) In the circuit shown in Fig. 2, (W/L)1,4 = 50/0.5 and ISS = 1 mA : Fig. 2 (i) What is the small-signal differential gain? (ii) For Vin, CM = 1.5 V, what is the maximum allowable output voltage swing?