Question

Neglect body effect in the calculation for this problem. The device/circuit parameters are Part (a) and (b) refer to the following equalizer circuit: VE СВ св 2.5V (a)If VB 0-VB 0) = 0 capacitor initially uncharged Find the steady state values for VB and VB for the clock signal ф t as shown below. (10 pts) 6 c 4 E 2E 10 4 t (ns) (b) Estimate the 'rise time' for VB(t) to reach the steady-state values you have calculated in part (a). For make the calculation easier, divide the voltage difference into 2 segments (no need to divide more!) in your calculation. (15 pts) Part (c) and (d) refer to the following circuit where another transistor Q3 is connected between VB and VB as shown Printed by Wolfram Mathematica Student Edition below. VB(0) = VB(0,-0 and φ(t) is same as in Part(a): VB 03 CE СВ ф(t) 21 Q2 2.5v (c) With this new circuit, will the rise time in (b) be increased or decreased or unchanged? Explain your reasoning. (10 pts) (d) Write down the differential equations and state the initial conditions that allow you to solve for VB(t) and VB(t) for part (c). Express your equations in terms of lds(Vgs, Vds, Vtn, kn) function. Do not solve for it. (10 pts)

Answer 1

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