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< High-power GaAs FET (small signal gain stage) >
MGF0904A
L & S BAND / 0.6W
non - matched
DESCRIPTION
The MGF0904A, GaAs FET with an N-channel schottky
gate, is designed for use in UHF band amplifiers.
FEATURES
High output power
Po=28.0dBm(TYP.) @f=1.65GHz,Pin=15dBm
High power gain
Gp=13.0dB(TYP.) @f=1.65GHz,Pin=15dBm
High power added efficiency
P.A.E =40%(TYP.) @f=1.65GHz,Pin=15dBm
APPLICATION
For UHF Band power amplifiers
QUALITY
GG
RECOMMENDED BIAS CONDITIONS
Vds=8V Ids=200mA Rg=500 Refer to Bias Procedure
Absolute maximum ratings (Ta=25C)
Symbol Parameter Ratings Unit
VGDO Gate to drain voltage -17 V
VGSO
Gate to source
ID Drain current 800 mA
IGR Reverse gate current -2.5 mA
IGF Forward gate current 5.4 mA
PT*1 Total power dissipation 3.75 W
Tch Cannel temperature 175 C
Tstg Storage temperature -65 to +175 C
*1:Tc=25C
Electrical characteristics
Symbol Parameter Test conditions Limits Unit
IDSS
gm
VGS(off)
Po Output power
P.A.E. Power added efficiency
Rth(ch-c) *2
Rth(ch-a) *3
*2 :Channel-case
*3 :Channel-ambient
Saturated drain current VDS=3V,VGS=0V 400 550
Transconductance VDS=3V,ID=300mA 120 200
Gate to source cut-off voltage VDS=3V,ID=2.5mA -1 -3 -5 V
Thermal resistance
Thermal resistance
voltage
(Ta=25C)
-17 V
VDS=8V,ID(RF off)=200mA
f=1.65GHz,Pin=15dBm
Vf method - - 40
Δ
Vf method - - 100
Δ
OUTLINE DRAWING
②
φ2.2 0.6±0.2
1
.
0
5
6
.
1
GF-7
Unit : millimeters
①
③
5.0
9.0±0.2
14.0
(1) GATE
(2) SOURC E (F LAN GE)
(3) DRAI N
Min. Typ. Max.
800 mA
- mS
26 28 - dBm
- 40 - %
C/W
C/W
N
I
M
2
3
.
0
/
0
+
4
.
4
②
N
I
M
2
5
4
6
.
.
0
0
±
9
.
1
Publication Date : Apr., 2011
1
Page 2
< High-power GaAs FET (small signal gain stage) >
MGF0904A
L & S BAND / 0.6W
non - matched
MGF0904A TYPICAL CHARACTERISTICS( Ta=25deg.C )
ID vs. VGS ID vs. VDS
Po, PAE vs. Pin Po, PAE vs. VDS
Publication Date : Apr., 2011
2
Page 3
< High-power GaAs FET (small signal gain stage) >
MGF0904A
L & S BAND / 0.6W
non - matched
MGF0904A S-parameters( Ta=25deg.C , VDS=8(V),IDS=200(mA) )
S11,S22 vs. f S21,S12 vs. f
f
(GHz)
0.5 0.851 -99.0 6.855 116.0 0.055 31.0 0.338 -149.0 0.277 21.0
1.0 0.801 -138.0 4.265 89.0 0.064 22.5 0.368 -162.0 0.521 18.2
1.5 0.788 -161.5 3.192 71.0 0.072 13.0 0.390 -173.3 0.655 16.5
2.0 0.740 -177.0 2.544 52.0 0.079 4.0 0.409 -178.0 0.847 15.1
2.5 0.713 176.5 2.180 30.0 0.085 -7.0 0.411 177.0 0.940 14.1
3.0 0.670 171.5 2.040 9.0 0.091 -18.0 0.402 172.0 1.070 11.9
S11 S21 S12 S22 K MSG/MAG
Magn. Angle(deg.) Magn. Angle(deg.) Magn. Angle(deg.) Magn. Angle(deg.) - dB
S Parameters(Typ.)
Publication Date : Apr., 2011
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< High-power GaAs FET (small signal gain stage) >
MGF0904A
L & S BAND / 0.6W
non - matched
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Publication Date : Apr., 2011
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