Common centroid Better Matching for M1 9 fingers and M2 fingers

[laxman.vlsi]

Can somebody help me to get the better common centroid matching for M1(9fingers)And M2(9fingers).

thanks
Laxman

 

[IADanilov]

Hello

d d d d d d d
d d 2 1 2 1 d
d 2 1 2 1 2 d
d 1 2 1 2 1 d
d 2 1 2 1 d d
d d d d d d d

d = dummy

For saving die area you could give up border dummies.

 

[arun2011]

D B A B A B A B A B D
D A B A B A B A B A D
I think this will provide better matching, here D is the dummy transistors and A & B are the transistors 2 be matched

 

[laxman.vlsi]

D B A B A B A B A B D
D A B A B A B A B A D
I think this will provide better matching, here D is the dummy transistors and A & B are the transistors 2 be matched

I think this looks better, thankq

---------- Post added at 11:11 ---------- Previous post was at 10:11 ----------

D B A B A B A B A B D
D A B A B A B A B A D
I think this will provide better matching, here D is the dummy transistors and A & B are the transistors 2 be matched

In that case we can not share(say suppose i wanted to share M1 source & M2 source) for less space.
how about this pattern:
D A B B A A B B A A B D
D D A A B B A A B B D D

 

[arun2011]

if u want to share u can use this
DABBABABBAD
DBAABABAABD

Regards
arun

---------- Post added at 18:40 ---------- Previous post was at 18:37 ----------

i think its better don't go for sharing, it will increase stress due to STI

 

[Sidramareddy]

D A B B A A B B A A B D
D D A A B B A A B B D D


it's better...

 

[yoshrini]

One more option is, You can break the width of the transistor to half of its value ( if it does not affects the design ) and double the no. of fingers.

So u will be having even no. of fingers and can easily get common centroid matching

 

[erikl]

D A B A A B A D
D B A B B A B D
D A B A A B A D

I guess he doesn't want A:B = 10:8 ...:roll:

 

[Sidramareddy]

Ya...sorry for that post...nxt time this silly mistakes will not happens...

 

[srihari465]

ya...sorry for that post...nxt time this silly mistakes will not happens...

d b a b a b b a b a d
d a b a b a a b a b d


check weather it is right or wrong