Consider a CMOS inverter fabricated in a 0.25-m CMOS process for which VDD = 2.5 V, Vtn
Chapter 14, Problem 14.32(choose chapter or problem)
Consider a CMOS inverter fabricated in a 0.25-m CMOS process for which VDD = 2.5 V, Vtn = Vtp = 0.5 V, and nCox = 3.5 pCox = 115A/V2 . In addition, QN and QP have L = 0.25m and (W/L)n = 1.5. Investigate the variation of VM with the ratio Wp/Wn. Specifically, calculate VM for (a) Wp = 3.5Wn (the matched case), (b) Wp = Wn (the minimum-size case); and (c) Wp = 2Wn (a compromise case). For cases (b) and (c), estimate the approximate reduction in NML and silicon area relative to the matched case (a).
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