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How can I get the comprehensible parameters from model parameters?

rockyicer

hello:

 I have acquired the physical parameters of MOSFET from TSMC PDK model XXX.scs file.

it appears like this:

model nch bsim4  {  
     1: type=n  
+ lmin=9.999997e-006-(dxln+dlmisn)                    lmax=2.00001e-05
+ wmin=1e-005-(dxwn+dwmisn)         wmax=0.0009000001         version=4.5
+ gbmin=1.00e-12            rbsb=50                   ud=0
+ rbdb=50                   rgeomod=1                 rbpb=50
+ rshg=1.539650e+01         rbps=50                   rbpd=50
+ ngcon=1                   binunit=2                 paramchk=1
+ mobmod=0                  capmod=2                  igcmod=1
+ igbmod=1                  diomod=1                  rdsmod=1....................this is just a slice of the whole definition


I am trying to get the design variables such as Cgs, Cds, gm, Id, and etc.  which I can  get from ADE browser.  right now, I need the equations that could link the physical parameters to these regular design variables. I have looked up the MMSIM151 doc: spectremod:Virtuoso ® Simulator Components and Device Models Reference. it says that "The TSMC Model Interface (TMI) implements a modified version of the BSIM4 model, known as TMIBSIM4." in page 1317.  my question is where can i get the TSMC model equation. thanks in advance.

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  • Andrew Beckett

    This is not a TMI model, but a conventional bsim4 model. Not all TSMC technologies use (or need) TMI models. So for you, the equations are in the Spectre document. For other TMI models, you'd need to ask TSMC (since it's their model implementation).

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    This is not a TMI model, but a conventional bsim4 model. Not all TSMC technologies use (or need) TMI models. So for you, the equations are in the Spectre document. For other TMI models, you'd need to ask TSMC (since it's their model implementation).

    Regards,

    Andrew.

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