Dummy MOSFETs for Common Centroid Diff Pair

Status
Not open for further replies.

melkord

Full Member level 3
Joined
May 18, 2018
Messages
151
Helped
0
Reputation
0
Reaction score
1
Trophy points
18
Activity points
1,768
In a interdigitized or common centroid configured differential pair, e.g., ABBA , do we add dummy for each A and each B ?

if that is the case, do you have the dummies also in schematic to pass LVS?

I add dummies as well in schematic like shown in the picture below.
but if I need to add dummies for each A and each B, it means 1 MOSFET which sliced into 4 parts could have 8 dummies.
Do I understand it correctly or I am missing something here?

 

When doing common centroid in that fashion you want to add dummies on both ends making it like:
DABBAD.

What sort of connection you make with the dummy depends on your use case.
 

Status
Not open for further replies.
Cookies are required to use this site. You must accept them to continue using the site. Learn more…