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 FinFET model parameter 

Last post Sun, Mar 2 2014 3:04 AM by DaggerTruth. 27 replies.
Started by Saeed Gharagoz 11 Apr 2010 09:15 AM. Topic has 27 replies and 9948 views
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  • Mon, Nov 28 2011 2:15 AM

    Re: FinFET model parameter Reply

    To answer Vandana's question, all you normally need to do is to have a component which netlists with the same model name as in the file (e.g. use analogLib/nmos4/symbol and then set the model name to match the name in the file, and set the w and l appropriately). Then in ADE use Setup->Model Libraries and give the path to the model file. Note that spectre can read SPICE syntax files.

    Note I did need to make a small correction to the file because the syntax was wrong (see earlier my earlier post in the thread on this), and then it worked OK.

    Normally you'd have a design kit which takes care of the mapping between symbols and model files, but in the absence of this using analogLib components would be OK.

    Regards,

    Andrew.

    • Post Points: 35
  • Mon, Nov 28 2011 2:32 AM

    • 3gh2
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    • Posts 4
    • Points 125
    Re: FinFET model parameter Reply
    I need to know your email account and I only have the 45nm FinFET model! cheers
    • Post Points: 35
  • Mon, Nov 28 2011 2:35 AM

    • Farshad78
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    • Points 65
    Re: FinFET model parameter Reply
    Thanks. My emails address: moradifarshad@gmail.com Could you please let me know if you have used them for circuit simulations also? Thanks Best
    • Post Points: 5
  • Mon, Apr 30 2012 12:59 AM

    Re: FinFET model parameter Reply

    Hello~I download 32nm model of finfet from website http://ptm.asu.edu/.

    .param pnch = 2e16                       nch = ??? (what nch means?)
    .param ptox = 1.4e-9     we know  tox = Oxide thickness
    .param ptsi = 'tbsi'                           tsi = Fin thickness
    .param ptbox = 1.4e-9                   
    .param npvthf0 = 0.29                     npvthf0 = ???
    .param npvthb0 = 0.29
    .param esi = 11.7                            esi = ???
    .param eox = 3.9                             eox = ???
    .param nlambda1 ='(-1)*(ptox/(ptbox+ptsi/(esi/eox)))'
    .param nlambda2 ='(-1)*(ptbox/(ptox+ptsi/(esi/eox)))'

    .param delta1 = 0.008
    .param delta2 = 0.008

    .param Voff2=-0.09
    .param N = 0.2
    .param Vt = 0.0259
    .param Voff1 = 0.0

    I have a FinFET model parameter and I want to use to simulate a circuit.

    I want to change some parameters from the table. (like  .param ptox = 1.4e-9 => .param ptox = 1.6e-9)  How can I do it?

    • Post Points: 5
  • Wed, Sep 5 2012 8:27 AM

    • lartola
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    • Toulouse, Garonne (Haute)
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    Re: FinFET model parameter Reply

    Hi Mr. Beckett,

     

    I've try to do the same, but I get an error about the level of the model cards:

     ERROR (SFE-1138): "*********20nfet.pm" 4: Model `nfet': nmos level 72 is not supported. 

    Actually, the model file starts with following:

    .model nfet nmos level = 72 

    Thanks in advance for your help

    Regards,

     

    Laurent  

    Regards, Laurent
    • Post Points: 20
  • Wed, Sep 5 2012 8:41 AM

    Re: FinFET model parameter Reply

    Laurent,

    You need to use MMSIM10.1 or MMSIM11.1 - you must be using too old a version. I just tried a very simple model card with level=72 and it is correctly recognized as bsimcmg in either of these two versions. I know that early MMSIM10.1 versions didn't recognize level 72. For the versions I had available to test, it works in  10.1.1.181.isr12 but not 10.1.1.070.isr6 - so it changed somewhere between the two.

    Regards,

    Andrew.

    • Post Points: 20
  • Wed, Sep 5 2012 9:03 AM

    • lartola
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    • Points 115
    Re: FinFET model parameter Reply
    Andrew, thanks for your answer; I will update it as soon possible.
    Regards, Laurent
    • Post Points: 5
  • Wed, Aug 28 2013 8:20 AM

    • dileepghosty
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    • GUrgaon, Haryana
    • Posts 1
    • Points 5
    Re: FinFET model parameter Reply

    hi 3gh2,

                can you please mail me The 45 nm FinFet model files to me. I'll be using them for academic puposes.this post has helped me alot.my id is dileepkushwaha@hotmail.com.

    thanx in advance :-)

    dileep

     

    • Post Points: 5
  • Fri, Dec 6 2013 10:46 PM

    FinFET model parameter in cadence Reply

    hai andrew,

    i downloaded 32nm sub-circuit model for FinFET (double-gate)  and i did simulation in Tanner Spice i am getting proper output for Double gate inverter

    now coming to cadence how to include these files(in which format) in the library, in our lab we have analogLib, gpdk45,90,180nm lib

    from analogLib library we can instance synmbol for nmos, pmos and we can design our circuit by changing the l and w

    can you help me how to instance symbol for 32nm FinFET such that we can change w and l like MOS

     

    help me in this regard

    thanks in advance  

    • Post Points: 20
  • Fri, Dec 20 2013 10:28 AM

    Re: FinFET model parameter in cadence Reply

    I don't think there is an example transistor in analogLib with appropriate parameters for a finfet. You'd have to roll your own - which to be honest would be the normal practice for any technology. People don't usually use the actual transistors from analogLib for anything real - because they are intended to be ideal components.

    Regards,

    Andrew.

    • Post Points: 5
  • Sat, Mar 1 2014 11:13 PM

    Re: FinFET model parameter Reply

    Hello Saeed,

    Can you please mail me the 45nm model card? I need it for my academic project.This is my mail id g.gautham2010@vit.ac.in

    It would be a great help to me if you can mail me.

    • Post Points: 5
  • Sun, Mar 2 2014 2:34 AM

    Re: FinFET model parameter Reply

     Hi Saeed,

    Can you please mail me the FinFET 45nm model  card? I need it for my academic project. My mail id is g.gautham2010@vit.ac.in  

    It would be a great help to me if you can mail me.

    Thanx..

    • Post Points: 5
  • Sun, Mar 2 2014 3:04 AM

    Re: FinFET model parameter Reply

     I accidently posted twice the same question and do not know how to delete my post. Sorry about that.

    • Post Points: 5
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Started by Saeed Gharagoz at 11 Apr 2010 09:15 AM. Topic has 27 replies.