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What is STI and why we use dummies to avoid it?

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Brittoo

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Hi all

Need to be enlightened on STI and the purpose of using dummies to avoid STI. Please help.

Regards
Brittoo
 

Re: what is STI ?????

STI = Shallow Trench isolation. It is used to isolate between different device.

Purpose of dummy to avoid(minimize) STI stress on the device, as STI will affect the device characteristic (Lod effect) which is not good, especially when you are doing matching like current mirror. I think in most of the advance technology, this has already taken in the model
 
Re: what is STI ?????

Additional pdf for reference ( highlight in yellow )
 

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    Brittoo

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Re: what is STI ?????

Hi

Thanks a ton to both of you. Have a great day !!!

Regards
Brittoo
 

what is STI ?????

Nice answer!
Thank you milkdragon!
 

Re: what is STI ?????

Let me contribute more for this topic. The pdf's which are attached will give lot's of information about STI and it's effects. Thank you.
 

Re: what is STI ?????

One more paper is in the below topic. Please read that one also. It's also a good one.



Name: Effect of shallow trench isolation induced stress on CMOS transistor mismatch.pdf

Thank You.
Varma.
 

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