PSpice--Monte Carlo Delay?

Question

I need to use an analog delay that has a tolerance so that the delay varies during a Monte Carlo simulation.

TLine would be a great part but it doesn't have a tolerance parameter.

An all-pass network can't be used for the delay because it doesn't have a linear phase response and the signal is complex.

Can TLine or something like it be made to use a tolerance that Monte Carlo can operate on? Any other suggestions?

Kevin Aylward · Accepted Answer

Yes. Use SuperSpice:-)SuperSpice allows MC and parameter sweeps on TLines. There are some examples in the example folder.Kevin Aylward a very affordable Mixed-ModeWindows Simulator with Schematic Capture,Waveform Display, FFT's and Filter Design.

Jim Thompson · Answer

I don't Monte Carlo, since chip components are ratiometric, requiringdifferent means to test for worst-case.BUT, couldn't you simply parameterize TD?                                        ...Jim Thompson-- |  James E.Thompson, P.E.                           |    mens     ||  Analog Innovations, Inc.                         |     et      ||  Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    ||  Phoenix, Arizona            Voice:(480)460-2350  |             ||  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  ||                  |    1962     |             I love to cook with wine.      Sometimes I even put it in the food.

Bob Penoyer · Answer

Yes. Can I used Monte Carlo with a parameterized value? How?

Jim Thompson · Answer

See PSpice Reference Guide (v10.3), pp 47...50                                        ...Jim Thompson-- |  James E.Thompson, P.E.                           |    mens     ||  Analog Innovations, Inc.                         |     et      ||  Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    ||  Phoenix, Arizona            Voice:(480)460-2350  |             ||  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  ||                  |    1962     |             I love to cook with wine.      Sometimes I even put it in the food.

Keith Williams · Answer

When I was doing this, we were given the process distributions (including tracking) to use in the simulations. We also used end- point distributions to converge on the "worst-case" more quickly. Discretes were another issue though.

PSpice--Monte Carlo Delay?

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