Hello, I have a quick question. I'm having trouble...
# ieee-sscs-dc-22s
StefanCK
07/11/2022, 10:18 PMHello, I have a quick question. I'm having trouble with the NPN bipolar transistor. I can't simulate it in xschem and keep getting this error, even on a very simple test with minimum other devices. Does anyone know what the undefined parameter is and what is this gmin stepping? Thank you.
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Pranav Lulu
07/12/2022, 2:46 AMCan you post the image again. This one is not clear
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StefanCK
07/12/2022, 6:31 AMIs this clearer? It look good for me.
StefanCK
07/12/2022, 7:20 AMSlack on mobile seems to make it fuzzy, only download looks clear or desktop slack
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Pranav Lulu
07/12/2022, 7:22 AMYes download looks clear.
Pranav Lulu
07/12/2022, 7:22 AMIt's saying no such vector. Can you show your schematic
Pranav Lulu
07/12/2022, 7:23 AMAlso it says your timestep is small for transient analysis
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StefanCK
07/12/2022, 9:04 AMI have transient turned off, i don't know why it still tries it.
StefanCK
07/12/2022, 9:09 AMThere is a problem with the NPN transistor, undefined parameter dkisnpn1x2. I can't figure out NPN transistor parameters, there is no multiplier or size variables just:
name=Q1
model=npn_05v5_w1p00l2p00
spiceprefix=X
StefanCK
07/12/2022, 9:32 AMI can see inside the file sky130_fd_pr__npn_05v5__t.corner.spice that the variable dkisnpn1x2 is defined but for some reason the corner file is not seen.
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Pranav Lulu
07/12/2022, 9:47 AMYou have to type run if your are trying to plot directly the results like this. Just after . control type run
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StefanCK
07/12/2022, 10:23 AMrun doesn't help, same error with the variable dkisnpn1x2. Is there some other way to give corner models, or to give the variable directly to spice?
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