Resistor matching technique in CMOS process

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rainman.cn

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

regards,
rainman
 

res match problem

match what?
can you explain what you mean?
 

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
 

Re: res match problem

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

res match problem

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

Re: res match problem

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

Re: res match problem

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

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