Brittoo
Member level 5
Hello all
A mimcap pcell provided by TSMC has the cap in DNW (mimcap_woum). The Nwell and substrate tap guardring structures are tied together. In one of the designs using this mimcap, the guard ring was connected to substrate potential.
As per my understanding, there is no depletion region formed due to the absence of reverse bias . What is the benefit of connecting the DNW to the substrate potential :?:
Regards
Brittoo
A mimcap pcell provided by TSMC has the cap in DNW (mimcap_woum). The Nwell and substrate tap guardring structures are tied together. In one of the designs using this mimcap, the guard ring was connected to substrate potential.
As per my understanding, there is no depletion region formed due to the absence of reverse bias . What is the benefit of connecting the DNW to the substrate potential :?:
Regards
Brittoo