lab4.11 - ECE 124d Lab 4 1 week This lab has 2 parts in...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
ECE 124d Lab 4 1 week: This lab has 2 parts -- in both parts you are examining the behavior of circuits given a noisy environment, namely, power coupled noise. Part 1 Using the fast repeater circuit you built for Lab 2b, instrument the spice deck so that you have separate power and ground connections for each inverter/repeater. Do this by making the power and ground connections of your cells available if you used sub-circuits and then add separate power and ground voltage sources to each buffer, all referenced to node 0. (Do not vary the ground terminals you used in your wire models-- you don’t know where they have been!) Charac- terize the total line delay variation when the Vdd and Gnd sources both have 10% deviations from nominal values. For the .130um technology that means that Vdd will be between 1.17V and 1.43V Gnd will be between -0.13V and 0.13V. Assume no correlations between the variations (i.e. each of the voltages is varying independently, for each of the repeaters). Measure the delay from input
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Ask a homework question - tutors are online