Of course, it does matter. Because the above rule is one of many rules that you should satisfy to have a good matching. Common centroid is in addition to the above rule and it is for eliminating first-order temprature and process variation across the wafer.
Of course, it does matter. Because the above rule is one of many rules that you should satisfy to have a good matching. Common centroid is in addition to the above rule and it is for eliminating first-order temprature and process variation across the wafer.
If I want to arrange my differential pair transistor as above, I have to discontinue the active for each block. Because if i don't do that, the current will flow in opposite direction each other. Am I Right?
I would prefer adding a dummy polt in between the "improved" version to improve profiling between the diffusion. also able to complete the diffusion ends with sharp changes from diffusion. I would also add dummy magnet-like POLY to improve POLY end mis-matches.
hi ryusgnal - please read post on "Matching Layout Techniques" about dummy transistor...but if hung_wai_ming can explain further the magnet-like poly the better.