0.4
0.016
This pad print provides allow-
ance for package placement by
automated assembly equipment
without adding excessive
parasitics that could impair the
high frequency performance of
the ATF-541M4. The layout is
shown with a footprint of the
ATF-541M4 superimposed on the
PCB pads for reference.
For Further Information
The information presented here is
an introduction to the use of the
ATF-541M4 enhancement mode
PHEMT. More detailed application
circuit information is available
from Agilent Technologies. Consult
the web page or your local Agilent
Technologies sales representative.
0.3
0.012
0.5
0.020
1.1
0.043
0.3
0.012
0.4
0.016
0.5
0.020
Figure 3. PCB Pad Print for Minipak 1412.
Package (mm [inches ]).
ATF-541M4 Die Model
Advanced_Curtice2_Model
MESFETM1
NFET=yes
PFET=no
Vto=0.3
Beta=0.888
Lambda=72e-3
Alpha=13
Tau=
Rf=
Crf=0.1 F
Gsfwd=
Gsrev=
Gdfwd=
Gdrev=
R1=
R2=
Vbi=0.95
Vbr=
Vjr=
Is=
Ir=
Imax=
Xti=
N=
Fnc=1 MHz
R=0.08
P=0.2
C=0.1
Taumdl=no
wVgfwd=
wBvgs=
wBvgd=
wBvds=
wldsmax=
wPmax=
AllParams=
Gscap=2
Cgs=1.732 pF
Cgd=0.255 pF
Gdcap=2
Fc=0.65
Rgd=0.25 Ohm
Rd=1.0125 Ohm
Rg=1.7 Ohm
Rs=0.3375 Ohm
Ld=
Lg=0.188 nH
Ls=
Cds=0.273 pF
Rc=195 Ohm
Tnom=16.85
Idstc=
Ucrit=-0.72
Vgexp=1.91
Gamds=1e-4
Vtotc=
Betatce=
Rgs=0.25 Ohm
Eg=
ATF-541M4 Minipak Model
INSIDE Package
VAR
VAR1
K=5
Var
Egn
TLINP
TL1
TLINP
TL2
Z2=85
Z1=30
Z=Z2/2 Ohm
L=22 mil
K=K
A=0.000
F=1 GHz
TanD=0.001
Z=Z2/2 Ohm
L=20 0 mil
K=K
C
A=0.000
C1
F=1 GHz
TanD=0.001
GATE
SOURCE
C=0.28 pF
L
L
Port
G
Num=1
TLINP
TLINP
Port
L6
L1
TL7
TL3
S2
L=0.147 nH
R=0.001
L=0.234 nH
R=0.001
Z=Z2/2 Ohm
L=5.2 mil
K=K
A=0.000
F=1 GHz
TanD=0.001
Z=Z2 Ohm
L=23.6 mil
K=K
A=0.000
F=1 GHz
TanD=0.001
Num=4
C
C2
GaAsFET
FET1
C=0.046 pF
Mode1=MESFETM1
Mode=Nonlinear
DRAIN
SOURCE
L
TLINP
Port
D
Num=3
L7
TL5
L=0.234 nH
R=0.001
L
Port
TLINP
Z=Z2 Ohm
L=27.5 mil
K=K
A=0.000
F=1 GHz
TanD=0.001
L4
MSub
S1
TL9
L=0.281 nH
R=0.001
Num=2
Z=Z2 Ohm
L=11 mil
K=K
A=0.000
F=1 GHz
TanD=0.001
MSUB
MSub2
H=25.0 mil
Er=9.6
Mur=1
Cond=1.0E+50
Hu=3.9e+034 mil
T=0.15 mil
TanD=0
Rough=0 mil
This model can be used as a design tool. It has been tested on ADS for various specifications. However, for
more precise and accurate design, please refer to the measured data in this data sheet. For future
improvements, Agilent reserves the right to change these models without prior notice.
14
HP [ HEWLETT-PACKARD ]
