Prove that the p/n ratio that gives lowest average delay

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1. Prove that the P/N ratio that gives lowest average delay in a logic gate is the square root of the ratio that gives equal rise and fall delays.

2. Let W(g, p) be the best stage effort of a path if one is free to add extra buffers with a parasitic delay p and logical effort g. For example, Section 4.5.2 shows that W(1, 1) = 3.59. It is easy to make a plot of W(1, p) by solving EQ numerically; this gives the best stage effort of static CMOS circuits where the inverter has a parasitic delay of p. Prove the following result, which is useful for determining the best stage effort of domino circuits where buffers have lower logical efforts:

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Reference no: EM131276118

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