FLL120MK
L-Band Medium & High Power GaAs FET
FEATURES
• High Output Power: P
= 40.0dBm (Typ.)
1dB
• High Gain: G
= 10.0dB (Typ.)
1dB
= 40% (Typ.)
• High PAE: η
add
• Proven Reliability
• Hermetically Sealed Package
DESCRIPTION
The FLL120MK is a Power GaAs FET that is specifically designed to
provide high power at L-Band frequencies with gain, linearity and
efficiency superior to that of silicon devices. The performance in
multitone environments for Class AB operation make them ideally
suited for base station applications.
Fujitsu’s stringent Quality Assurance Program assures the highest
reliability and consistent performance.
ABSOLUTE MAXIMUM RATING (Ambient Temperature Ta=25°C)
Item
Symbol
Condition
Unit
Rating
Drain-Source Voltage
Gate-Source Voltage
V
V
15
-5
V
V
DS
GS
T = 25°C
c
Total Power Dissipation
Storage Temperature
Channel Temperature
P
37.5
-65 to +175
175
W
°C
°C
T
T
stg
T
ch
Fujitsu recommends the following conditions for the reliable operation of GaAs FETs:
1. The drain-source operating voltage (V ) should not exceed 10 volts.
DS
2. The forward and reverse gate currents should not exceed 26.8 and -5.8 mA respectively with
gate resistance of 50Ω.
3. The operating channel temperature (T ) should not exceed 145°C.
ch
ELECTRICAL CHARACTERISTICS (Ambient Temperature Ta=25°C)
Limit
Typ.
Item
Symbol
Test Conditions
Unit
Min.
Max.
V
V
V
I
= 5V, V
= 0V
GS
Saturated Drain Current
Transconductance
I
-
4000 6000
mA
DS
DS
DS
DSS
g
-
= 5V, I
= 2400mA
=240mA
2000
m
-
mS
V
DS
Pinch-off Voltage
V
= 5V, I
DS
-1.0
-2.0 -3.5
p
Gate Source Breakdown Voltage
V
-
-
= -240µA
-5
V
GSO
GS
Output Power at 1dB G.C.P.
P
1dB
39.5 40.0
-
dBm
V
= 10V
= 0.55 I
DS
I
DS
DSS (Typ.),
-
Power Gain at 1dB G.C.P.
Power-added Efficiency
G
9.0
10.0
dB
1dB
f = 2.3GHz
η
add
-
-
-
40
%
R
4.0
Thermal Resistance
Channel to Case
3.3
°C/W
th
G.C.P.: Gain Compression Point
CASE STYLE: MK
Edition 1.1
July 1999
1