Multisim Education Edition Help 372062L-01

Edition Date: April 2015

Part Number: 372062L-01

»View Product Info
Download Help (Windows Only)

MESFET

MESFET instance declaration syntax:

Zxxx nodeDrain nodeGate nodeSource Model <area> <OFF> <ICVDS=icvds> <ICVGS=icvgs>

MESFET instance declaration parameters:

Parameter Name
Parameter Description
area
Area factor.
OFF
[FLAG] Device is initially off.
ICVDS
Initial drain-to-source voltage.
ICVGS
Initial gate-to-source voltage.
TEMP
Instance temperature.

N-channel MESFET model definition syntax:

.MODEL mymodelname NMF ( <Other_Model_Parameters…> )

P-channel MESFET model definition syntax:

.MODEL mymodelname PMF ( <Other_Model_Parameters…> )

MESFET model definition parameters:

Parameter Name
Parameter Description
Units
Default
AF
Flicker noise exponent.
1.0
ALPHA
Saturation voltage parameter.
1/V
2.0
B
Doping tail parameter.
0.3
BETA
Transconductance parameter.
A/(V2)
2.5x10-3
BETATCE
BETA exponential temperature coefficient.
%/ºC
0.0
CDS
Drain-to-source junction capacitance.
F
0.0
CGD
Gate-to-drain junction capacitance.
F
0.0
CGS
Gate-to-source junction capacitance.
F
0.0
EG
Bandgap voltage.
eV
1.11
FC
Forward bias depletion capacitance coefficient.
0.5
IS
Junction saturation current.
A
1x10-14
KF
Flicker noise coefficient.
0.0
LAMBDA
Channel length modulation parameter.
1/V
0.0
M
Gate junction grading coefficient.
0.5
N
Gate junction emission coefficient.
1.0
PB or VBI
Gate junction potential.
V
1.0
RD
Drain ohmic resistance.
W
0.0
RG
Gate ohmic resistance.
W
0.0
RS
Source ohmic resistance.
W
0.0
TAU
Conduction current delay time.
sec
0.0
TNOM
Temperature at which model parameters were measured.
ºC
TRD1
RD linear temperature coefficient.
1/ºC
0.0
TRG1
RG linear temperature coefficient.
1/ºC
0.0
TRS1
RS linear temperature coefficient.
1/ºC
0.0
T_ABS
Absolute temperature.
ºC
T_MEASURED
Temperature at which model parameters were measured.
ºC
T_REL_GLOBAL
Temperature delta relative to global temperature.
ºC
T_REL_LOCAL
Temperature delta relative to AKO model temperature.
ºC
VDELTA
Capacitance transition voltage.
V
0.2
VMAX
Capacitance limiting voltage.
V
0.5
VTO or VT0
Pinch-off voltage.
V
-2.0
VTOTC
VTO temperature coefficient.
V/ºC
0.0
XTI
IS temperature coefficient.
0.0

Example

Z1 d g s myGaSFET
.model myGaSFET NMF(vto=1.3)

WAS THIS ARTICLE HELPFUL?

Not Helpful