Requires: Utmost IV, SmartSpice, SmartView

Minimum Versions: Utmost IV 1.10.6.R, SmartSpice 4.10.2.R, SmartView 2.28.2.R

This example shows how to use direct model parameter extraction and parameter
optimization together to extract a mosfet SPICE model.

The project file
opt_ex02.prj
and the data file
opt_ex02.uds
for this example should both be loaded into your database. When opened, the
project will look as shown in
opt_ex02_01.png
.

Direct extraction of model parameters can be used to provide better initial
values for the subsequent parameter optimization. In this example, the
threshold voltage will be extracted and the BSIM3 model parameter VTH0 will
be set to this value as an ititial starting value for the optimization.

The extraction is given a name and is defined in the extractions dialog as
shown in
opt_ex02_02.png
. An extraction setup is then created in which the extraction to be used is
defined and also where to write the result. In this case, the result will be
written directly to the model library of the project as shown in
opt_ex02_03.png
.

Once the extraction setup has been defined, this can be added into the
optimization sequence as the child of the data subset. When the optimization
sequence is run, the extraction is performed on the dataset specified in the
data subset and the result written into the model library. Note that the
data subset must contain only one dataset in order to be used with an
extraction.

The second step in the optimization sequence is an optimization setup which
will further optimize the VTH0 parameter plus a number of other parameters
as shown in
opt_ex02_04.png
.

When the optimization sequence is run, first the extraction is performed and
the result written into the model library. Then the optimization is performed
as shown in
opt_ex02_05.png
. By performing the extraction first, the number of simulations required to
perform the optimization is reduced by a factor of three in this case.

Graphics

Files

opt_ex02.uds

Utmost IV CSV Data Logfile
Format Version 1
Copyright (c) 1984-2016 Silvaco, Inc. All rights reserved


DataSetStart

DataSetName, idvg
MeasurementType, DC

BatchName, opt_ex02
WaferName, wafer1
DieName, x0y0
DeviceName, n10x10
Temperature, 27

FabDate, 18 Jan 2013
UserDate, 18 Jan 2013

WaferDiameter, 0.2
DieLayout, FOUR_CROSSING
DieSize, 0.02, 0.02

Attribute, L, 1e-05
Attribute, W, 1e-05

NodeNames, d g s b

Sweep, 1, V, G, LIN, 0, 5, 0.1, CALCULATED, 0.1, 0

Sweep, 2, V, B, LIN, 0, -3, -0.6, CALCULATED, 0.1, 0

Constant, V, D, 0.1, 0.1, 0
Constant, V, S, 0, 0.1, 0

Target, I, D

Plot, idvg, XY (LIN LIN), VG, ID

DataArray, ID
3.23473e-15    4.08074e-14    5.13954e-13    6.4346e-12     7.89344e-11    
9.08944e-10    9.03532e-09    7.2565e-08     3.8348e-07     1.03755e-06    
1.81487e-06    2.59298e-06    3.34429e-06    4.0654e-06     4.75713e-06    
5.42082e-06    6.05777e-06    6.66926e-06    7.25653e-06    7.82077e-06    
8.36313e-06    8.88467e-06    9.38645e-06    9.86941e-06    1.03345e-05    
1.07825e-05    1.12143e-05    1.16306e-05    1.20322e-05    1.24197e-05    
1.27937e-05    1.31549e-05    1.35038e-05    1.3841e-05     1.41669e-05    
1.44821e-05    1.47869e-05    1.50819e-05    1.53673e-05    1.56436e-05    
1.59112e-05    1.61704e-05    1.64215e-05    1.66648e-05    1.69007e-05    
1.71293e-05    1.73511e-05    1.75661e-05    1.77748e-05    1.79772e-05    
1.81737e-05    1.31599e-16    2.0663e-15     3.26007e-14    5.13449e-13    
8.02039e-12    1.21436e-10    1.65832e-09    1.7986e-08     1.40105e-07    
5.87548e-07    1.29074e-06    2.04743e-06    2.79071e-06    3.50764e-06    
4.19673e-06    4.85862e-06    5.49431e-06    6.10494e-06    6.69166e-06    
7.25561e-06    7.7979e-06     8.31958e-06    8.82165e-06    9.30507e-06    
9.77073e-06    1.02195e-05    1.06521e-05    1.10694e-05    1.1472e-05     
1.18606e-05    1.22358e-05    1.25983e-05    1.29485e-05    1.32871e-05    
1.36145e-05    1.39311e-05    1.42375e-05    1.4534e-05     1.4821e-05     
1.5099e-05     1.53682e-05    1.56291e-05    1.58819e-05    1.61269e-05    
1.63646e-05    1.6595e-05     1.68185e-05    1.70354e-05    1.72458e-05    
1.745e-05      1.76483e-05    1.48656e-17    2.4411e-16     4.37516e-15    
7.87456e-14    1.41213e-12    2.49143e-11    4.12658e-10    5.6486e-09     
5.56083e-08    3.30926e-07    9.38352e-07    1.66792e-06    2.40236e-06    
3.11484e-06    3.8009e-06     4.46041e-06    5.09416e-06    5.70315e-06    
6.28848e-06    6.85125e-06    7.39252e-06    7.91335e-06    8.41471e-06    
8.89754e-06    9.36273e-06    9.81112e-06    1.02435e-05    1.06606e-05    
1.10631e-05    1.14517e-05    1.1827e-05     1.21896e-05    1.254e-05      
1.28788e-05    1.32065e-05    1.35235e-05    1.38302e-05    1.41272e-05    
1.44147e-05    1.46932e-05    1.4963e-05     1.52244e-05    1.54779e-05    
1.57236e-05    1.59619e-05    1.6193e-05     1.64172e-05    1.66348e-05    
1.6846e-05     1.70511e-05    1.72501e-05    0              4.80061e-17    
9.10037e-16    1.79156e-14    3.52646e-13    6.87739e-12    1.28932e-10    
2.0971e-09     2.4787e-08     1.88054e-07    6.88998e-07    1.38452e-06    
2.10878e-06    2.81653e-06    3.49932e-06    4.15619e-06    4.78764e-06    
5.3946e-06     5.97809e-06    6.53919e-06    7.07895e-06    7.59839e-06    
8.09849e-06    8.58017e-06    9.04431e-06    9.49174e-06    9.92324e-06    
1.03395e-05    1.07414e-05    1.11293e-05    1.15041e-05    1.18661e-05    
1.22161e-05    1.25546e-05    1.28819e-05    1.31986e-05    1.35051e-05    
1.38019e-05    1.40893e-05    1.43677e-05    1.46374e-05    1.48988e-05    
1.51523e-05    1.5398e-05     1.56364e-05    1.58676e-05    1.6092e-05     
1.63098e-05    1.65212e-05    1.67264e-05    1.69257e-05    0              
1.45868e-17    2.55802e-16    5.34961e-15    1.12774e-13    2.36459e-12    
4.83093e-11    8.89558e-10    1.22815e-08    1.10546e-07    5.10019e-07    
1.16537e-06    1.87808e-06    2.58084e-06    3.26025e-06    3.91431e-06    
4.54328e-06    5.14796e-06    5.72935e-06    6.2885e-06     6.82643e-06    
7.34416e-06    7.84266e-06    8.32283e-06    8.78556e-06    9.23167e-06    
9.66192e-06    1.00771e-05    1.04778e-05    1.08647e-05    1.12385e-05    
1.15997e-05    1.19488e-05    1.22865e-05    1.26131e-05    1.29291e-05    
1.3235e-05     1.35312e-05    1.38181e-05    1.4096e-05     1.43652e-05    
1.46263e-05    1.48793e-05    1.51247e-05    1.53628e-05    1.55938e-05    
1.58179e-05    1.60354e-05    1.62466e-05    1.64517e-05    1.66509e-05    
0              0              9.08738e-17    1.95629e-15    4.34758e-14    
9.63869e-13    2.09892e-11    4.23098e-10    6.64902e-09    6.8293e-08     
3.8165e-07     9.92743e-07    1.69264e-06    2.39023e-06    3.06621e-06    
3.71738e-06    4.34374e-06    4.946e-06      5.52513e-06    6.08214e-06    
6.61804e-06    7.13385e-06    7.63051e-06    8.10894e-06    8.57001e-06    
9.01454e-06    9.4433e-06     9.85701e-06    1.02564e-05    1.0642e-05     
1.10146e-05    1.13746e-05    1.17226e-05    1.20592e-05    1.23848e-05    
1.26999e-05    1.30049e-05    1.33002e-05    1.35863e-05    1.38634e-05    
1.4132e-05     1.43923e-05    1.46447e-05    1.48895e-05    1.5127e-05     
1.53574e-05    1.5581e-05     1.57981e-05    1.60089e-05    1.62135e-05    
1.64123e-05    

DataSetFinish