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How to get Kn' and Kp' from a given PDK?

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DZC

DZC

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I've tried two ways:

1.K'=u*Cox;
2.using a current drived dioded connected transistor and calculate from a output data;

but I found the result vary as much as 100 times???
I'm afraid there's sth wrong with my method.
How do you usually get the K'?
 

both should be same. just calculate from calculator or see dc op. point of tran. where u can see it's kn
 

you can get those parameters in the process lib.
u0, tox, and you can calculate it by your hand
 

which is the appropriate method , by hand calculation or by simulations..
1.note the Id current
2. substitute this in eq with known papameter except
K'
3. and finally calculate it.

please let me know this is right way or not?
 

the betaeff parameter is uCox`Weff/Leff
 

How can I access to the process library? I am using Peregrine Design Kit
Thanks a lot
 

If you have a functioning PDK then why not simulate the device
of interest and take your k' from the result? ID=k'*W/L*(Vgs-VT)**2,
extrapolate the sqrt(ID) vs Vgs for your VT.

I don't know why you care about figuring k' really, and your W and L
are going to be different effective than drawn, which for small devices
means your model params for Tox and u0 and instance property
geometry fall far short of the whole story - and if your model is BSIM,
there's even more empirical mystery goo to unwind. Just simulate
the foundry provided model where all of that is already fitted up.
 

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