help Use the parameters VTN0 = 15v, VTP0 = -1.5v, (W/L)N = 1 mu m /1mu m, (W/L)P
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Use the parameters VTN0 = 15v, VTP0 = -1.5v, (W/L)N = 1 mu m /1mu m, (W/L)P = 2mu m/mu m, VDD = 7v, kiN = 41 mu a/v2, = 32 mu a/v2, 2|phi F| = 0.7v, gamma N= gamma P = 0.6v 1/2, lambda N = lambda P = 0c-1 Add a nonlinear (circuit) capacitance CL(Fout) = Co[l + (Vout/ Vo)]-1/2, where Co = 4pf and Vo = 0.8v; connect it from Foul to Ground, (a) Extend the "25%-75% Method" to derive a formula for tPLH in terms of Co, ILH, VOL, VOH, and Vo. (Assume a high-to-low step input: Vin = VOH to Vin = VOL.) You must solve an ODE: CL(Vout) dVout/dt = ILH, where ILH is a (positive) constant charging current at the 25% output logic-swing voltage V25%. (b) Numerically evaluate tPLH using your formula from Part (a). Verify all transistor-state assumptions.Explanation / Answer
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