hi, i am having some problems with using tsmc03(0.35um) technology. i desinged an ADC in cadence in schematic part and it works very good. but i draw the same ADC's layout and it doesnt work. i check all parts and i think its because of bulk connection of nmos. i must connect nmos's bulk to ground and nmos's source to an other node in decoder part.but when i do that there's a ground problem occurs.is this technology twin-well?any help will welcome.i hope i explain my problem clearly.thanks anyway.