sp.bhuvana
Newbie level 5
Hi, Iam new to Virtuoso Layout L. I tried to simulate LNA using nmoscap from gpdk180. Iam getting an DRC error stating that "N+SD Iso Psub tap spacing must be <=10.0 um". Kindly help me to clear that error
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Sounds like you need to add a psub tap next to your N+SD.
I have already attached Psub tap to N+SD... Still same error exists...
Not sure if I interpret your colors correctly. At the left side to me it seems you have an Nimplant within a Pimplant crossing the Nwell border (connected to the D? of the nmos, pls. see the picture below), which isn't a valid Ptap.
At the right side it seems there is one more Pimplant partly within the Nwell (connected to the S?), which isn't a valid Ptap as well.
Valid Ptaps should have a P+diff on psub outside - but not too far (<=10µm , in your case) from - the Nwell border, and then be connected through a contact to ME1 and to GND - not to the Source, and generally also not to the Drain of the Nmos.