https://open-source-silicon.dev logo
#sky130
Title
# sky130
s

Simon Waid

02/22/2022, 2:58 PM
I'm running into a DRC violation when creating varactors with magic: N-well overalp of varactor poly <0.15um. I'm not sure what to do. It seems to me the generated varactor is faulty.
h

Harald Pretl

02/22/2022, 4:13 PM
Wow, how did you bring up this DRC window? I totally missed it this far...
s

Simon Waid

02/22/2022, 4:43 PM
Go to DRC, here it's important to enable full DRC, so click on DRC complete. Then Options DRC Manager. From here... have fun fixing all the issues :).
👍 1
t

Tim Edwards

02/22/2022, 7:02 PM
@User: It does look like an error. Please raise an issue in the github issue tracker for open_pdks. If you want a quick fix, just edit (descend into) the parameterized device and stretch the guard ring and nwell on top and bottom to clear the DRC error. If you don't use the parameterized device GUI to change a parameter (i.e., don't click on "Okay"), then the edit will remain.
s

Simon Waid

02/23/2022, 9:00 AM
@User Thank you! I opened a github issue.