a) Show that C for CMOS inverter can be expressed as C = CN(1 + WP WN)

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a) Show that C for CMOS inverter can be expressed as C = CN(1 + WP WN)+CW Where CN is determined by the NMOS transistors and the parasitic capacitances is proportional to the width of the relevant transistor. b) Using the equivalent resistances method, find tPHL and tpLH assume (W/L)n = 1, RN,eff = 12.5 kΩ and RP,eff = 30 kΩ for Weff/Leff = 1.

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a) Show that

C

for CMOS inverter can be expressed as

C = C_{N} (1 + \frac{W_{P}}{W_{N}}) + C_{W}

Where

C_{N}

is determined by the NMOS transistors and the parasitic capacitances is proportional to the width of the relevant transistor. b) Using the equivalent resistances method, find tPHL and tpLH assume