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Verilog A code with lookup table

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Hai,

I have a doubt in TFET based Mixer circuit design. Actually I have downloaded InAs TFET model generated by PennState University. This model is having verilog A code and lookup table for current and capacitance values. I am trying to use this model in cadence virtuoso. I did DC and AC analysis. Is it possible to find pss, pac analysis for mixer circuit using InAs TFET model?

Thank you.

Parents

  • Hai Andrew,Thanks for your reply. The verilog A code is:

    analog begin
    Ids=$table_model(V(d,s), (V(g,s)), "IdVg-InAs-NTFET-Lg-20nm.tbl","1LL,1LL");
    Cgd=$table_model(V(d,s), (V(g,s)), "CGD-InAs-NTFET-Lg-20nm.tbl","1LL,1LL");
    Cgs=$table_model(V(d,s), (V(g,s)), "CGS-InAs-NTFET-Lg-20nm.tbl","1LL,1LL");

    if(analysis("dc")) begin
        I(d,s) <+ 1*Ids*W;
    end
    else begin
      if(analysis("tran")) begin
          Qgd = (W*1*Cgd)*(V(g,d));
          Qgs = (W*1*Cgs)*(V(g,s));
          Qg=Qgs+Qgd;
          I(d,s) <+ 1*Ids*W ;
          I(d) <+ ddt(-1*Qgd);
          I(s) <+ ddt(-1*Qgs);
          I(g) <+ ddt(Qg);
      end
    end

    In my point of view, according to code, we can run only 'dc' and 'tran' analysis of the mixer circuit. Is it correct?

    If I want to find pss and pac analysis for the mixer circuit, what can I do?

    Pls suggest me..

Reply

  • Hai Andrew,Thanks for your reply. The verilog A code is:

    analog begin
    Ids=$table_model(V(d,s), (V(g,s)), "IdVg-InAs-NTFET-Lg-20nm.tbl","1LL,1LL");
    Cgd=$table_model(V(d,s), (V(g,s)), "CGD-InAs-NTFET-Lg-20nm.tbl","1LL,1LL");
    Cgs=$table_model(V(d,s), (V(g,s)), "CGS-InAs-NTFET-Lg-20nm.tbl","1LL,1LL");

    if(analysis("dc")) begin
        I(d,s) <+ 1*Ids*W;
    end
    else begin
      if(analysis("tran")) begin
          Qgd = (W*1*Cgd)*(V(g,d));
          Qgs = (W*1*Cgs)*(V(g,s));
          Qg=Qgs+Qgd;
          I(d,s) <+ 1*Ids*W ;
          I(d) <+ ddt(-1*Qgd);
          I(s) <+ ddt(-1*Qgs);
          I(g) <+ ddt(Qg);
      end
    end

    In my point of view, according to code, we can run only 'dc' and 'tran' analysis of the mixer circuit. Is it correct?

    If I want to find pss and pac analysis for the mixer circuit, what can I do?

    Pls suggest me..

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