-- File: [Cherry]<Thyme>ProcessDefs>NMos4.0u25.thy
-- Last edited:
-- SChen, October 24, 1984 7:05:53 pm PDT,
--  corrected calculations for Ps and Pd using sdExtension.
-- by Barth, July 8, 1983  4:17 PM
-- by SChen June 11, 1983  5:17 PM 
-- dc parameters cf. Doganis memo of May 17, 83
--   for run 65, wafer 9, location 125-127.

-- The following things ought to be done some day.
-- Characterize transistor and parasitic parameters over process variations.
-- Account for edge effects.
-- Check that temperature model is correct.
-- Compare Thyme output to actual circuit performance.
-- Provide gate and overlap capacitance measurements.
-- Account for variation in wire capacitance due to layers underneath,
--    requires extractor enhancement.

ETran: circuit[gate, source, drain| 
  L_ 2, W_ 4, sourceExtension _ 1, drainExtension _ 1]= {

  fet: MosFet[gate, source, drain, Gnd|
    Lm_ L*Lambda, 
    Wm_ W*Lambda,
    As_ sourceExtension*W*Lambda*Lambda, 
    Ad_ drainExtension*W*Lambda*Lambda,
    Ps_ (2*sourceExtension+W)*Lambda, 
    Pd_ (2*drainExtension+W)*Lambda,
    Vfb_ -4.271886E-02,
    Na_ 8.849108E+14,
    Tox_ 700,
    Lk1_ -0.922859,
    Wk1_ 0.401684,
    K20_ -2.665298E-02,
    Lk2_ -1.07395,
    Wk2_ 1.85753,
    Etao_ -3.262307E-02,
    nEta_ 4.20162,
    Un_ 707.860,
    Vo_ 28.1617,
    Lu_ 0.847386,
    Ecrit_ 1.35669,
    Lv_ 8.85297,
    dL_ 0.487116,
    dW_ -2.42256,
    TDegC_ Temp,
    Cj_ 8.73E-17,
    Cjm_ 2.21E-16,
    Pb_ 0.90
    ]
  };

DTran: circuit[gate, source, drain|  
  L_ 4, W_ 2, sourceExtension _ 1, drainExtension _ 1]= {

  fet: MosFet[gate, source, drain, Gnd|
    Lm_ L*Lambda, 
    Wm_ W*Lambda,
    As_ sourceExtension*W*Lambda*Lambda, 
    Ad_ drainExtension*W*Lambda*Lambda,
    Ps_ (2*sourceExtension+W)*Lambda, 
    Pd_ (2*drainExtension+W)*Lambda,
    Vfb_ -4.24520,
    Na_ 9.721774E+14,
    Tox_ 700,
    Lk1_ -1.05228,
    Wk1_ 2.83468,
    K20_ -1.200934E-02,
    Lk2_ 6.95809,
    Wk2_ -0.802315,
    Etao_ 2.570121E-02,
    nEta_ 3.67642,
    Un_ 848.461,
    Vo_ 31.6363,
    Lu_ -0.141426,
    Ecrit_ 1.05208,
    Lv_ 26.6670,
    dL_ 0.550266,
    dW_ -2.41600,
    TDegC_ Temp,
    Cj_ 8.73E-17,
    Cjm_ 2.21E-16,
    Pb_ 0.90
    ]
  };

WireCap:  circuit[n|  -- l=length, w=width, a=area, p=perimeter
  l2M_ 0, w2M_ 3, a2M_ 0, p2M_ 0, -- 2nd layer metal
  lM_ 0, wM_ 3, aM_ 0, pM_ 0,  -- 1rst layer metal
  lP_ 0, wP_ 2, aP_ 0, pP_ 0,  -- poly

  a2MC_ 1.3E-5pF, p2MC_ 0, -- /(uM)^2, /uM, 2nd layer metal to bulk
  aMC_ 2.6E-5pF, pMC_ 0,  -- 1rst layer metal to bulk
  aPC_ 4.0E-5pF, pPC_ 0  -- poly to bulk
  ] = {

  C: capacitor[n, Gnd] = Lambda*
    (Lambda*((a2M+l2M*w2M)*a2MC+(aM+lM*wM)*aMC+(aP+lP*wP)*aPC)+
    (p2M+2*l2M+2*w2M)*p2MC+(pM+2*lM+2*wM)*pMC+(pP+2*lP)*pPC)
  };

DifCap: circuit[n| lD_ 0, wD_ 0, aD _ 0, pD _ 0]= {

  dc: Diffusion[n, Gnd |
    a_ (lD*wD+aD)*Lambda*Lambda, 
    p_ (2*(lD+wD)+pD)*Lambda, 
    Cj_ 8.90E-17,
    Cjm_ 2.25E-16,
    Pb_ 0.87,
    TDegC_ Temp]
  };

WireRes: circuit[nodeA, nodeB|
  l2M_ 0, w2M_ 3,
  lM_ 0, wM_ 3, 
  lP_ 0, wP_ 2, 
  lD_ 0, wD_ 2,

  s2MR_ 0.06,  -- ohms/square
  sMR_ 0.06,
  sPR_ 40,
  sDR_ 30] = {

  R: resistor[nodeA, nodeB] = l2M/w2M*s2MR + lM/wM*sMR + lP/wP*sPR + lD/wD*sDR
  };

ConRes: circuit[nodeA, nodeB|
  n2MM_ 0,  -- number of parallel 2nd layer metal to 1rst layer metal vias
  nMP_ 0,   -- number of parallel 1rst layer metal to poly contacts
  nMD_ 0,   -- number of parallel 1rst layer metal to diffusion contacts
  nPD_ 0,   -- number of parallel poly to diffusion contacts, butting

  c2MMR_ 40, -- ohms/via, 2nd layer metal to 1rst layer
  cMPR_ 40,  -- ohms/contact, metal-poly
  cMDR_ 25, -- ohms/contact, metal-diffusion
  cPDR_ 50 -- ohms/contact, poly-diffusion, with metal strap, i.e. butting contact
  ] = {

  R: resistor[nodeA, nodeB] = 1/(n2MM/c2MMR + nMP/cMPR + nMD/cMDR + nPD/cPDR)
  };

  Stray:  circuit[n |
    a2M _ 0, p2M _ 0,
    aM _ 0, pM _ 0,
    aP _ 0, pP _ 0,
    aD _ 0, pD _ 0
    ] = {
      wireCap: WireCap [n |
        a2M _ a2M, p2M _ p2M,
        aM _ aM, pM _ pM,
        aP _ aP, pP _ pP];
      difCap: DifCap [n | aD _ aD, pD _ pD];
      };