
1
Edition 1.7
December 1999
FLL1200IU-2
L-Band Medium & High Power GaAs FET
DESCRIPTION
The FLL1200IU-2 is a 120 Watt GaAs FET that employs a push-pull design that
offers ease of matching, greater consistency and a broader bandwidth for high
power L-band amplifiers. This product is targeted to reduce the size and
complexity of highly linear, high power base station transmitting amplifiers.
This new product is uniquely suited for use in PCS/PCN base station amplifiers
as it offers high gain, long term reliability and ease of use.
Fujitsu’s stringent Quality Assurance Program assures the highest
reliability and consistent performance.
FEATURES
Push-Pull Configuration
High Power Output: 120W (Typ.)
High PAE: 44%.
Broad Frequency Range: 1800 to 2000 MHz.
Suitable for class AB operation.
Parameter
Drain-Source Voltage
Gate-Source Voltage
Total Power Dissipation
Storage Temperature
Channel Temperature
Symbol
V
DS
V
GS
P
T
T
stg
Tc = 25
°
C
V
V
W
°
C
°
C
T
ch
Condition
187.5
-65 to +175
+175
-5
15
Rating
Unit
ABSOLUTE MAXIMUM RATINGS (Ambient Temperature Ta=25
°
C)
Fujitsu recommends the following conditions for the reliable operation of GaAs FETs:
1. The drain-source operating voltage (VDS) should not exceed 12 volts.
2. The forward and reverse gate currents should not exceed 156.0 and -57.6 mA respectively with
gate resistance of 10
.
3. The operating channel temperature (Tch) should not exceed 145
°
C.
Item
Drain Current
Transconductance
Pinch-Off Voltage
Gate-Source Breakdown Voltage
Output Power
Linear Gain
Power-Added Efficiency
Thermal Resistance
CASE STYLE: IU
Symbol
I
DSS
V
GSO
-
24
-
-
48
72
-1.0
-2.0
-3.5
-5
-
-
49.8
50.8
-
10.0
11.0
-
-
44
-
-
0.6
0.8
V
DS
= 5V, V
GS
= 0V
V
DS
= 5V, I
DS
= 28.8A
V
DS
= 5V, I
DS
= 2.88A
I
GS
= -2.88mA
Channel to Case
V
DS
= 12V
f=1.96 GHz
I
DS
= 5.0A
Pin = 41.0dBm
A
S
V
dB
dBm
V
°
C/W
%
gm
V
p
P
out
GL
η
add
Drain Current
-
20
30
A
I
DSR
R
th
Conditions
Unit
Limits
Typ.
Max.
Min.
ELECTRICAL CHARACTERISTICS (Ambient Temperature Ta=25
°
C)