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发表于 2009-8-8 22:00:15
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一切为了money...,我来回答这个问题if you use bsim3v3 model,it's difficult to calculate the mobility from the mos model.usually if MOBMOD=3:
Ueff=U0/[1+(UA*vgst/TOX+UB*(vgst/TOX)^2)*(1+UC*vbseff]
where vgst=vgsteff+2*(kT/q)~vgs-vth+2(kT/q)
If take into account Temperature:
U0(T)=U0(T/TNOM)^UTE
UA(T)=UA+UA1(T/TNOM-1)
UB(T)=UB+UB1(T/TNOM-1)
UC(T)=UC+UC1(T/TNOM-1)
So you will see it is so complex,but it's not enough yet:
you should take the velocity saturation effects into account.
As for the CLM parameter,it's too difficult to calculate manually.You can setup a simulation with the single device,and check the GDS . |
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