The AMS Designer simulator allows you to perform the Monte Carlo analysis on a design to view the impact of a change in analog circuit or model parameters on the design simulation. The AMS Designer Monte Carlo analysis utilizes the native Monte Carlo engine of Spectre to control the AMS (xmsim) simulation flow of multiple simulation runs under parameter variations in a single xmsim invocation.
distribute parameter of the Monte Carlo analysis not supported in AMS Designer.In the AMS Designer simulator, you use Tcl commands to control (with stimulus) and monitor (with probes) the simulation. In each iteration of the Monte Carlo analysis, the simulation stimulus in the Tcl input file specified with the xrun or xmsim command is re-opened and re-applied to the simulation. The probes in the Tcl file are redirected to a new waveform file, which has an iteration-indexed name derived from the originally opened waveform file.
AMS Designer also supports DC analysis inside the Monte Carlo analysis.