Resistor matching technique in CMOS process

[rainman.cn]

In cmos process, we have several types res, N+, P+, poly1, M1, M2, and so on,
but which type match better,

regards,
rainman

 

[pouchito]

res match problem

match what?
can you explain what you mean?

 

[newsailor]

res match problem

These several types res can all match well as long as their W and L is big enough.
I only know that variation of res value of different corner is different obviously

 

[forkschgrad]

Re: res match problem

differet type of resistors has different matching characteristics. it depends on the function.

 

[dachuan315]

res match problem

you must find the data from the model munual by the factory

 

[zajbanlik]

Re: res match problem

Usualy is matching by poly resistors the best. But look at your technology process specification.

 

[lijianheng]

Re: res match problem

Generally poly res matching is best. It depends on the process you use.

 

[forkschgrad]

Re: res match problem

i agree with poly.