lib/template/bipdef.tcl

   1 #-------------------
   2 #  bipdef0
   3 #-------------------
   4 #  Default Value File for BJT Structure
   5
   6 puts "Loading default BJT parameters..."
   7 puts "These settings can be overwrite by user"
   8
   9 #COMMENT   Structure Definitions
  10 #    WEMIT    = emitter width (microns)
  11 #    WECONT   = emitter contact width (microns)
  12 #    WXBASE   = extrinsic base width (microns)
  13 #    WBCONT   = base contact width (microns)
  14 #    WEXB     = emitter to extrinsic base distance (microns)
  15 #    BEOVER   = base diffusion edge
  16 #               to emitter diffusion edge (microns)
  17 #    BXOVER   = base diffusion edge
  18 #               to x-base diffusion edge (microns)
  19 #    TEPI     = structure depth (epi thickness) (microns)
  20
  21 set    WEMIT     1.0
  22 set    WECONT    1.0
  23 set    WXBASE    1.0
  24 set    WBCONT    1.0
  25 set    WEXB      0.5
  26 set    BEOVER    0.5
  27 set    BXOVER    0.5
  28 set    TEPI      2.0
  29
  30 #COMMENT   Doping Information
  31 #    TRANTYPE = transistor type (NPN or PNP)
  32 #    PROFTYPE = profile type (ANALYTIC, SUPREM3, TSUPREM4,
  33 #                             or SUPRA)
  34 #    LATD     = lateral diffusion factor
  35 #  Analytic Profile Parameters
  36 #    NEPI     = epitaxial layer doping (#/cm^3)
  37 #    BLPEAK   = peak doping for buried layer (#/cm^3)
  38 #    BLDEPTH  = depth of buried layer (microns)
  39 #    BPEAK    = peak doping for intrinsic base (#/cm^3)
  40 #    YBPEAK   = distance from surface
  41 #               to peak base doping (microns)
  42 #    BCJUNC   = base-collector junction depth (microns)
  43 #    XBPEAK   = peak doping for extrinsic base (#/cm^3)
  44 #    XBJUNC   = extrinsic base-collector junction depth (microns)
  45 #    EPEAK    = peak doping for emitter (#/cm^3)
  46 #    EBJUNC   = emitter-base junction depth (microns)
  47
  48
  49 set    TRANTYPE  NPN
  50 set    PROFTYPE  ANALYTIC
  51 set    LATD      0.80
  52
  53 set    NEPI      1E16
  54 set    BLPEAK    1E19
  55 set    BLDEPTH   0.5
  56 set    BPEAK     4E17
  57 set    YBPEAK    0.0
  58 set    BCJUNC    0.40
  59 set    XBPEAK    5E19
  60 set    XBJUNC    0.45
  61 set    EPEAK     1E20
  62 set    EBJUNC    0.10
  63
  64
  65 #COMMENT   Grid Spacings, Ratio, Maximum Voltage
  66 #    EBSP     = grid spacing at emitter-base junction (microns)
  67 #    BCSP     = grid spacing at collector-base junction (microns)
  68 #    RATIO    = grid spacing ratio
  69 #    VCBMAX   = maximum collector-base reverse bias (volts)
  70
  71 set    EBSP      0.0125
  72 set    BCSP      0.0250
  73 set    RATIO     1.5
  74 set    VCBMAX    3
  75