Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
See the recommended documentation of this function
NMOS
Simple NMOS Transistor
Block Screenshot
Description
The NMos model is a simple model of a n-channel metal-oxide semiconductor FET. It differs slightly from the device used in the SPICE simulator. For more details please care for H. Spiro.
The model does not consider capacitances. A small fixed drain-source resistance is included (to avoid numerical difficulties).
| W [m] | L [m] | Beta [1/V²] | Vt [V] | K2 | K5 | DW [m] | DL[m] | |
| 12.e-6 | 4.e-6 | .062 | -4.5 | .24 | .61 | -1.2e-6 | -.9e-6 | depletion |
| 60.e-6 | 3.e-6 | .048 | .1 | .08 | .68 | -1.2e-6 | -.9e-6 | enhancement |
| 12.e-6 | 4.e-6 | .0625 | -.8 | .21 | .78 | -1.2e-6 | -.9e-6 | zero |
| 50.e-6 | 8.e-6 | .0299 | .24 | 1.144 | .7311 | -5.4e-6 | -4.e-6 | |
| 20.e-6 | 6.e-6 | .041 | .8 | 1.144 | .7311 | -2.5e-6 | -1.5e-6 | |
| 30.e-6 | 9.e-6 | .025 | -4. | .861 | .878 | -3.4e-6 | -1.74e-6 | |
| 30.e-6 | 5.e-6 | .031 | .6 | 1.5 | .72 | 0 | -3.9e-6 | |
| 50.e-6 | 6.e-6 | .0414 | -3.8 | .34 | .8 | -1.6e-6 | -2.e-6 | depletion |
| 50.e-6 | 5.e-6 | .03 | .37 | .23 | .86 | -1.6e-6 | -2.e-6 | enhancement |
| 50.e-6 | 6.e-6 | .038 | -.9 | .23 | .707 | -1.6e-6 | -2.e-6 | zero |
| 20.e-6 | 4.e-6 | .06776 | .5409 | .065 | .71 | -.8e-6 | -.2e-6 | |
| 20.e-6 | 4.e-6 | .06505 | .6209 | .065 | .71 | -.8e-6 | -.2e-6 | |
| 20.e-6 | 4.e-6 | .05365 | .6909 | .03 | .8 | -.3e-6 | -.2e-6 | |
| 20.e-6 | 4.e-6 | .05365 | .4909 | .03 | .8 | -.3e-6 | -.2e-6 | |
| 12.e-6 | 4.e-6 | .023 | -4.5 | .29 | .6 | 0 | 0 | depletion |
| 60.e-6 | 3.e-6 | .022 | .1 | .11 | .65 | 0 | 0 | enhancement |
| 12.e-6 | 4.e-6 | .038 | -.8 | .33 | .6 | 0 | 0 | zero |
| 20.e-6 | 6.e-6 | .022 | .8 | 1 | .66 | 0 | 0 |
Parameters
Width [m]
W
Properties : Type 'vec' of size 1.
Length [m]
L
Properties : Type 'vec' of size 1.
Transconductance parameter [A/(V*V)]
Beta
Properties : Type 'vec' of size 1.
Zero bias threshold voltage [V]
Vt
Properties : Type 'vec' of size 1.
Bulk threshold parameter
K2
Properties : Type 'vec' of size 1.
Reduction of pinch-off region
K5
Properties : Type 'vec' of size 1.
Narrowing of channel [m]
dW
Properties : Type 'vec' of size 1.
Shortening of channel [m]
dL
Properties : Type 'vec' of size 1.
Drain-Source-Resistance [Ohm]
RDS
Properties : Type 'vec' of size 1.
Default properties
Inputs :
Modelica variable name : 'G'
Implicit variable.
Outputs :
Modelica variable name : 'D'
Implicit variable.
Modelica variable name : 'B'
Implicit variable.
Modelica variable name : 'S'
Implicit variable.
Parameters :
Modelica parameter name : 'W'
Default value : 0.00002
Is a state variable : no.
Modelica parameter name : 'L'
Default value : 0.000006
Is a state variable : no.
Modelica parameter name : 'Beta'
Default value : 0.000041
Is a state variable : no.
Modelica parameter name : 'Vt'
Default value : 0.8
Is a state variable : no.
Modelica parameter name : 'K2'
Default value : 1.144
Is a state variable : no.
Modelica parameter name : 'K5'
Default value : 0.7311
Is a state variable : no.
Modelica parameter name : 'dW'
Default value : -0.0000025
Is a state variable : no.
Modelica parameter name : 'dL'
Default value : -0.0000015
Is a state variable : no.
Modelica parameter name : 'RDS'
Default value : 10000000
Is a state variable : no.
File name of the model : NMOS
Interfacing function
SCI/modules/scicos_blocks/macros/Electrical/NMOS.sci
Modelica model
SCI/modules/scicos_blocks/macros/Electrical/NMOS.mo
See also
- PMOS — Simple PMOS Transistor
| Report an issue | ||
| << Inductor | Electrical_pal | NPN >> |