Version 4
SHEET 1 1088 680
WIRE 32 256 32 224
WIRE 32 384 32 336
WIRE 128 224 32 224
WIRE 176 144 176 -32
WIRE 176 384 176 240
WIRE 288 -32 176 -32
WIRE 288 0 288 -32
WIRE 288 112 288 80
WIRE 288 192 176 192
WIRE 288 224 288 192
WIRE 288 384 288 304
FLAG 288 112 0
FLAG 288 384 0
FLAG 32 384 0
FLAG 176 384 0
SYMBOL nmos4 128 144 R0
SYMATTR InstName M1
SYMATTR Value BSS83
SYMBOL voltage 288 208 R0
SYMATTR InstName V2
SYMATTR Value 0
SYMBOL voltage 288 -16 R0
SYMATTR InstName V3
SYMATTR Value 5
SYMBOL voltage 32 240 R0
SYMATTR InstName V1
SYMATTR Value 2
TEXT 448 0 Left 0 !* GAMMA added\n.MODEL BSS83 NMOS\n+ LEVEL=3\n+ W=1E-3\n+ L=1E-6\n+ VTO=2\n+ VMAX=1E6\n+ RS=3\n+ RD=3\n+ CJ=0.001396\n+ MJ=0.3936\n+ THETA=1E-6\n+ ETA=0.009307\n+ KAPPA=2.226\n+ GAMMA=0.2
TEXT 32 -112 Left 0 !.dc V1 0 5  .1 V2 -8 0 4
TEXT 32 -72 Left 0 !.op
TEXT 32 -496 Left 0 ;Enhanced model of the BSS83 from Philips\n \nSweep of Vgs from 0 to 5V at Vsb=-8, -4, 0V\n.dc V1 0 5  .1 V2 -8 0 4\nPlot Id(M1) to see how Vsb changes the behaviour.\n \nI added GAMMA=0.2 to the model to get the correct Ids(Vgs, Vsb).\nThe simulated drain current is independent of Vsb if GAMMA is \nomitted. This was clearly a missing parameter in the original model.\n \nThe complete ".model"-statement can be also put into a file \nlike BSS83.mod and added with a SPICEdirective.\n.include BSS83.mod
TEXT 720 0 Left 0 ;* Philips model\n.MODEL BSS83 NMOS\n+ LEVEL=3\n+ W=1E-3\n+ L=1E-6\n+ VTO=2\n+ VMAX=1E6\n+ RS=3\n+ RD=3\n+ CJ=0.001396\n+ MJ=0.3936\n+ THETA=1E-6\n+ ETA=0.009307\n+ KAPPA=2.226