how to find out whether matching in analog layout

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hanm tama

hi
can anyone tell me how to find whether we have met the matching criteria while designing layout. every analog ckt has some matching required. so we use common centroid and interdigitised methods for designing the layout. now after this how to find that the layout which we have done is meeting the matching requirements or not. how to judge that the matching is not met and we need some further effort to get a gd matching.

Thanks in advance

tama
 

Look through your eyes then do postsimulation.


hanm
 

This is a question that hardly to answer. First, I will check the matching data from Foundry. Next I will check the layout style to be used. after layout, I will check the paracitics by extraction and layout by eyes. Finally, I will check the post-sim results.

Yibin.
 

Can anyone recommend some material about matching in anlaog layout? RF layout will be the best.
 

It is relation to designer. Only the designer know which circuit is important. So the key circuit will be layout carefully.
 

opamp's input ,current source...
 

Layout depends on experience greatly, and you can master some rules of layout from books.
 

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