Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
It doesn't matter if you shield by VSS or Vdd: In terms of ac shielding they are identical. Use that one which is more simple (shorter) to connect with.
If you have a supply referred node. it would be useful to have shielding using VDD lines. This would improve PSRR.
For example, a PMOS gate bias for a current mirror. It is a supply referred node. and and needs to be tightly coupled to supply in order to reject supply noise and hence improve PSRR.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
