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Question 1. The MOS differential amplifier given in the figure utilizes matched NMOS transistors having Vư = 0.4 V, kn =
Posted: Sun May 15, 2022 5:11 pm
by answerhappygod
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Question 1. The MOS differential amplifier given in the figure utilizes matched NMOS transistors having Vư = 0.4 V, kn = 16 mA/V2. The channel length modulation effect can be neglected. Vpp = +1 V Rpl = 2.5 kO Rp2 = 2.5 k 2 Vpa - Voz Von VG1 Q Q2 - Vg2 D 0.4 mA a. = = -Vss=-1 V For VG1 = VG2 = 0 V, find 101, 102, 101, VD2, and Voy for each of Q1 and Q2, and Vs. b. For VG1 = VG2 = Vcm, what is the highest value of Vcm for which Q1 and Q2 remain in saturation. c. For VG1 = VG2 = Vcm, what is the lowest value that Vcm can take while the current source still functions properly? Assume that the transistors supplying the constant current is operating at the same overdrive voltage as Q1 and Q2. d. For VG2 = 0 V, find the minimum value of VG1 for which the entire bias current flows through Q1. What are the corresponding values of Vp1, Vp2, and Vs? e. For VG2 = 0 V, find the maximum value of VG1 for which the entire bias current flows through Q2. What are the corresponding values of VD1, VD2, and Vs?