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Please help me to understand BSIM3V3 spice model

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wesspower

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bsim3v3 49 model berkeley

I am trying to calculate the Id value by the equation
"Id = 1/2 * u0 * cox * (Vgs -Vt)^2 * (1 + lambda * Vds) and the Bsim Model
please guide me throught the calculation , thanks

just for understanding purpose , let's assume Vgs = 1 , Vds = 1.


.MODEL CMOSN NMOS ( LEVEL = 49
+VERSION = 3.1 TNOM = 27 TOX = 5.6E-9
+XJ = 1E-7 NCH = 2.3549E17 VTH0 = 0.381362
+K1 = 0.448342 K2 = 5.929784E-3 K3 = 1E-3
+K3B = 3.2767535 W0 = 1E-7 NLX = 2.478383E-7
+DVT0W = 0 DVT1W = 0 DVT2W = 0
+DVT0 = 0.3601764 DVT1 = 0.4798196 DVT2 = -0.5
+U0 = 306.2105043 UA = -1.12881E-9 UB = 2.351349E-18
+UC = 3.70815E-11 VSAT = 1.635085E5 A0 = 1.8686781
+AGS = 0.3393546 B0 = -4.375283E-8 B1 = 4.903443E-7
+KETA = -3.966351E-3 A1 = 4.018353E-4 A2 = 0.378476
+RDSW = 179.831734 PRWG = 0.5 PRWB = -0.2
+WR = 1 WINT = 0 LINT = 0
+XL = 3E-8 XW = -4E-8 DWG = -2.586891E-8
+DWB = 3.240913E-9 VOFF = -0.0974614 NFACTOR = 1.8219843
+CIT = 0 CDSC = 2.4E-4 CDSCD = 0
+CDSCB = 0 ETA0 = 4.875988E-3 ETAB = 3.92741E-4
+DSUB = 0.0287979 PCLM = 1.8525545 PDIBLC1 = 0.9990679
+PDIBLC2 = 2.898908E-3 PDIBLCB = -0.050769 DROUT = 0.8924914
+PSCBE1 = 7.990153E10 PSCBE2 = 5.163298E-10 PVAG = 0.0099982
+DELTA = 0.01 RSH = 4.4 MOBMOD = 1
+PRT = 0 UTE = -1.5 KT1 = -0.11
+KT1L = 0 KT2 = 0.022 UA1 = 4.31E-9
+UB1 = -7.61E-18 UC1 = -5.6E-11 AT = 3.3E4
+WL = 0 WLN = 1 WW = 0
+WWN = 1 WWL = 0 LL = 0
+LLN = 1 LW = 0 LWN = 1
+LWL = 0 CAPMOD = 2 XPART = 0.5
+CGDO = 5.73E-10 CGSO = 5.73E-10 CGBO = 1E-12
+CJ = 1.749243E-3 PB = 0.99 MJ = 0.458011
+CJSW = 4.166444E-10 PBSW = 0.99 MJSW = 0.3424721
+CJSWG = 3.29E-10 PBSWG = 0.99 MJSWG = 0.3424721
+CF = 0 PVTH0 = -0.01 PRDSW = -10
+PK2 = 1.238425E-3 WKETA = 9.917607E-3 LKETA = -7.394384E-3 )
 

wesspower said:
I am trying to calculate the Id value by the equation
"Id = 1/2 * u0 * cox * (Vgs -Vt)^2 * (1 + lambda * Vds) and the Bsim Model
please guide me throught the calculation , thanks

just for understanding purpose , let's assume Vgs = 1 , Vds = 1.


.MODEL CMOSN NMOS ( LEVEL = 49
+VERSION = 3.1 TNOM = 27 TOX = 5.6E-9
+XJ = 1E-7 NCH = 2.3549E17 VTH0 = 0.381362
+K1 = 0.448342 K2 = 5.929784E-3 K3 = 1E-3
+K3B = 3.2767535 W0 = 1E-7 NLX = 2.478383E-7
+DVT0W = 0 DVT1W = 0 DVT2W = 0
+DVT0 = 0.3601764 DVT1 = 0.4798196 DVT2 = -0.5
+U0 = 306.2105043 UA = -1.12881E-9 UB = 2.351349E-18
+UC = 3.70815E-11 VSAT = 1.635085E5 A0 = 1.8686781
+AGS = 0.3393546 B0 = -4.375283E-8 B1 = 4.903443E-7
+KETA = -3.966351E-3 A1 = 4.018353E-4 A2 = 0.378476
+RDSW = 179.831734 PRWG = 0.5 PRWB = -0.2
+WR = 1 WINT = 0 LINT = 0
+XL = 3E-8 XW = -4E-8 DWG = -2.586891E-8
+DWB = 3.240913E-9 VOFF = -0.0974614 NFACTOR = 1.8219843
+CIT = 0 CDSC = 2.4E-4 CDSCD = 0
+CDSCB = 0 ETA0 = 4.875988E-3 ETAB = 3.92741E-4
+DSUB = 0.0287979 PCLM = 1.8525545 PDIBLC1 = 0.9990679
+PDIBLC2 = 2.898908E-3 PDIBLCB = -0.050769 DROUT = 0.8924914
+PSCBE1 = 7.990153E10 PSCBE2 = 5.163298E-10 PVAG = 0.0099982
+DELTA = 0.01 RSH = 4.4 MOBMOD = 1
+PRT = 0 UTE = -1.5 KT1 = -0.11
+KT1L = 0 KT2 = 0.022 UA1 = 4.31E-9
+UB1 = -7.61E-18 UC1 = -5.6E-11 AT = 3.3E4
+WL = 0 WLN = 1 WW = 0
+WWN = 1 WWL = 0 LL = 0
+LLN = 1 LW = 0 LWN = 1
+LWL = 0 CAPMOD = 2 XPART = 0.5
+CGDO = 5.73E-10 CGSO = 5.73E-10 CGBO = 1E-12
+CJ = 1.749243E-3 PB = 0.99 MJ = 0.458011
+CJSW = 4.166444E-10 PBSW = 0.99 MJSW = 0.3424721
+CJSWG = 3.29E-10 PBSWG = 0.99 MJSWG = 0.3424721
+CF = 0 PVTH0 = -0.01 PRDSW = -10
+PK2 = 1.238425E-3 WKETA = 9.917607E-3 LKETA = -7.394384E-3 )
Click to expand...

please understand that the square law equation ill give u incorrect result!
 

Thanks for replying !! I understand 2nd order equation is wrong in submicro . Do you know anyway I can know Id by hand calculation ?
 

go to the berkeley website. there are a lot of model equations of bsim3v3 and bsim4
 

there is no λ in the bsim3 model, there are many experiential parameters in the model, you should read the manual of bsim3 first.
 

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