Hello all,
I am trying to simulate a simple invert...
# xycee
Eslam Morsie
07/28/2021, 10:11 AMHello all,
I am trying to simulate a simple inverter using Xyce simulator using sky130 pdk and I have done all the fixes in this link
https://github.com/RTimothyEdwards/open_pdks/issues/124
and I still got errors regarding the models, could anyone help?
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Matthew Guthaus
07/28/2021, 11:28 AMYou need to use X1 and X2 for the transistors. The library defines the device models inside a sub circuit.
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Eslam Morsie
07/28/2021, 11:29 AMok I will try this, thanks sir @Matthew Guthaus
Eslam Morsie
07/28/2021, 12:51 PMI generated the netlist using xschem and I still get errors of models, could you please provide a working netlist with the pdk to see what is the problem? @Matthew Guthaus
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Tim Edwards
07/28/2021, 1:52 PM@Eslam Morsie: There's a scale factor built into sky130. You can't use "W=1u". It would need to be "W=1".
Tim Edwards
07/28/2021, 1:53 PM@Eslam Morsie: Xyce was updated maybe a month ago with a patch to recognize the more standard ".option scale", so the SkyWater scalefactor should be recognized and handled by Xyce.
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Eslam Morsie
07/28/2021, 1:55 PMAt first I didn't use micro but I got these errors @Tim Edwards
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Tim Edwards
07/28/2021, 1:58 PM@Matthew Guthaus has a script for that error, which is one difference between Xyce and ngspice that I have not yet folded into open_pdks, so you'll have to apply that fix by hand for now.
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Eslam Morsie
07/28/2021, 1:59 PMok thanks sir @Tim Edwards
Eslam Morsie
07/28/2021, 2:32 PM@Amro Tork