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ADE-XL Op. Region specs

rvz1

I'm having an issue with IC6.1.6-64b.101. I'm trying to setup operating region specs for a DC operating point run. The first problem that I found was that I have two transistors with similar instance names. One is M4 and the other is M4C. I'm setting up an operating region spec of vds-vdsat > 50m. If I only select M4 for this spec the results that the simulator chooses are actually the DC operating point numbers from M4C. I got around this on one schematic by choosing both FETs for the spec but only enabling one.

On a 2nd schematic this did not work. Again, if I only choose M4, it selects the operating point results of M4C. However, now when I choose both FETs I get an "eval error" in the results. If I look at the log, it says "unbound variable vdsat".

Has anybody had any luck with this tool?

Thanks ahead of time for your help.

Parents
  • So I found out that if I make an operating region spec using the operating region assistant the above issues happen. But if I edit those region specs via the ADE-XL test editor and through the operating region specification form (advanced tab) and basically delete all of my old specs and choose each device in the pop down menus on that form then uses the results for the correct devices for the specs. Yes, it's convoluted and confusing but at least I found a workaround.
Reply
  • So I found out that if I make an operating region spec using the operating region assistant the above issues happen. But if I edit those region specs via the ADE-XL test editor and through the operating region specification form (advanced tab) and basically delete all of my old specs and choose each device in the pop down menus on that form then uses the results for the correct devices for the specs. Yes, it's convoluted and confusing but at least I found a workaround.
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