Homework 3 Given the circuit as shown below, and assume the RC tree is driven by a unit size inverter (BSIM3 model and default parameters), compute the.

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Presentation transcript:

Homework 3 Given the circuit as shown below, and assume the RC tree is driven by a unit size inverter (BSIM3 model and default parameters), compute the Ceff at node s using the Macy’s method. R1 C1 s R2 C2 R4 C4 C3 R3 C5 R5 R1 = 1mΩ R2 = 2mΩ R3 = 2mΩ R4 = 1mΩ R5 = 4mΩ C1 = 1nF C2 = 1nF C3 = 4nF C4 = 4nF C5 = 2nF

Steps for Problem 3 1. Write the SPICE netlist of the RC tree and the inverter driver. 2. Reduce the RC tree load to the RC-p load and estimate the rough range of Ceff. 3. Characterize the table γ=f(α,β) for the inverter using SPICE. 4. Follow the Macy’s method the get the Ceff for the RC-p load.