Electrical Engineering Archive: Questions from 2023-10-29

Consider the MOSFET feedback amplifier shown in Figure P12.39. The transistor parameters are VTN = 0.5 V, Kn = 0.5 mA/V2, and λ = 0. Deter mine the small-signal voltage gain Av = vo/vi.

The technological parameters are μnCox = 4μpCox = 40 μA/V2, ∣γ∣ = 0.5 V1/2, 2ϕf = 0.5 V, λ = 0.02 V−1, Vtno = 0.6 V, and Vtpo = −0.8 V. Considering the CMOS inverter shown in the figure below, (W/L)n = 1/4, (W/L)p = 1, and VDD = 3.3 V. Find (1) expression of Δt = t2−t1, using the integral method, (2) if C = 40 fF, the value of Δt = t2−t1, using the average current method, and (3) based on the result obtained in (2), determine the duration of T and the switching power dissipated in the inverter.

Compute VT of an NMOS from I-V plot in Figure 1. displayed below. Compute channel length modulation factor (λ) from the I-V plot in Figure 2.

For this problem, you can assume that VDD = 1.2 V, CG = 2 fF/μm, and CD = 1 fF/μm. In the Figure 3, on the evaluation edge, what is the delay of the dynamic gate shown below as a function of Rsq,NMOS CL, WA, and Wclk ? You can assume that CD = 0 and ignore slope effect.