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Design a pseudo NMOS inverter that has equal capacitive charging and discharging currents at Vo = VDD/3 for use in a system with the following specifications: r = 5 VTN = 0.4V kn = 115 uA/V2 kn = 30 uA/V2 (W/L)n = 1.5 Find or calculate the following parameters: (W/L)p VOH VIL VM VOH VOL NMH NML

Design a pseudo NMOS inverter that has equal capacitive charging and discharging currents at Vo = VDD/3 for use in a system with the following specifications: r = 5 VTN = 0.4V kn = 115 uA/V2 kn = 30 uA/V2 (W/L)n = 1.5 Find or calculate the following parameters: (W/L)p VOH VIL VM VOH VOL NMH NML

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Design a pseudo NMOS inverter that has equal capacitive charging and discharging currents at Vo = VDD/3 for use in a system with the following specifications: r = 5 VTN = 0.4V kn = 115 uA/V2 kn = 30 uA/V2 (W/L)n = 1.5 Find or calculate the following parameters: (W/L)p VOH VIL VM VOH VOL NMH NML

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Design a pseudo-NMOS inverter that has equal capacitive charging and discharging currents at vO = VDD/4 for use in a system with VDD = 2.5 V, |Vt| = 0.5 V, kDesign a pseudo-NMOS inverter that has equal capacitive charging and discharging currents at vO = VDD/4 for use in a system with VDD = 2.5 V, |Vt| = 0.5 V, k
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Consider a CMOS inverter fabricated in a 0.25-um CMOS process for which VDD = 2.5 V, Vtn = -Vtp = 0.5 V, and unCox = 3.5upCox = 115 uA/V2. In addition, QN and QP have L = 0.25 ?m, and (W/L)n = 1.5. (a) Find Wp that results in VM = VDD / 2. What is the silicon area utilized by the inverter in this case? (b) For the matched case in (a), find the values of VOH, VOL, VIH, VIL, NML, and NMH. (c) For the matched case in (a), find the output resistance of the inverter in each of its two states.

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This problem investigates the effect of velocity saturation (Section 15.1.3) on the operation of a pseudo-NMOS inverter fabricated in a 0.13-um CMOS process for which VDD = 1.3 V, Vt = 0.4 V, kn = 5kp = 500 uA/V2, and |VDSsatp| = 0.6 V. Consider the case with vI = VDD and vO = VOL. Note that QP will be operating in the velocity-saturation region. Find its current IDsat and use it to determine VOL.
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