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Modeling >> Passive Devices >> Diffusion Resistors
https://designers-guide.org/forum/YaBB.pl?num=1032671300

Message started by Ken Kundert on Sep 21^st, 2002, 10:08pm

Title: Diffusion Resistors
Post by Ken Kundert on Sep 21^st, 2002, 10:08pm

I have just recently placed a new paper on the website that describes a relatively easy way to model diffusion resistors. You can find it at http://www.designers-guide.com/Modeling/diffusion-resistors.pdf. I put it together when I found that many people are using two-terminal models for diffusion resistors. Of course, the resistance of diffusion resistors is affected by the substrate. Any by ignoring the substrate terminal, they were taking a relatively simple modeling effort and making it much harder.

My goal in writing the paper was to develop a simple model that could easily replace their existing models. In particular, I wanted the model to accept the same parameters as the existing models. However, I do not personally have much experience with either diffusion resistors or the existing models. So I had to make some guesses. I would really appreciate it if someone that is familiar with them could give me feedback on the model presented in this paper.

In particular, I am interested in finding out

If the two-terminal model that I present is in fact heavily used out there.
If so, what exactly does the model look like (what is the constitutive equation and what are the parameters)
How do people really extract the parameters?
Whether the approach that I propose is well known, and if so, is it considered the best approach?
Whether I made any mistakes, missed something, or could change the paper to make it better.

I'd appreciate any help you can give.

Thanks,
Ken