What does Worst case Analysis do?

Worst Case is used to find the worst probable output of a circuit given the restricted variance of its parameters.

A sensitivity analysis is done for each parameter with a tolerance in turn to determine the “sensitive” direction for the parameter. Once the “sensitive” direction has been found for all of the components with a tolerance, a final worst case analysis is performed by setting all of the parameters to the limit of their tolerance in the “sensitive” direction.

The worst case is run in conjunction with another simulation, DC Sweep, AC Sweep or Transient and the simulation settings determine “where” to look for the worst case and “which direction” the worst case is. (It’s always possible to run two simulations if the worst case direction is in doubt)

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