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Mobile Infrastructure
CATV / DBS
W-LAN / ISM
RFID
Defense / Homeland Security
Fixed Wireless
Function
Gate /
RF Input
Drain /
RF Output
Ground
Pin No.
3
19
All other pins &
backside copper
Specifications
DC Parameter
Saturated Drain Current, I
dss
Transconductance, G
m
Pinch Off Voltage, V
p (1)
Typical Performance
(4)
Units Min
mA
mS
V
Typ
1170
590
-2.0
Max
Parameter
Frequency
Gain
S11
S22
Output P1dB
Output IP3
(3)
Noise Figure
IS-95 Channel Power
@ -45 dBc ACPR
Units
MHz
dB
dB
dB
dBm
dBm
dB
dBm
dBm
V
mA
915
18
-20
-12
+34
+46
3.5
Typical
1960 2140 2450
13.5
13
12
-20
-18
-18
-11
-24
-15
+33.8 +33.2 +33.5
+46.8 +46.6 +46.8
4.5
4.6
4.6
RF Parameter
(2)
Operational Bandwidth
Test Frequency
Small Signal Gain
Maximum Stable Gain
Output P1dB
Output IP3
(3)
Noise Figure
Units Min
MHz
MHz
dB
dB
dBm
dBm
dB
50
Typ
800
18
24
+34
+46
3.5
Max
4000
+27.8 +27.3
+25
+9
450
W-CDMA Ch. Power
@ -45 dBc ACLR
Drain Voltage
(5)
Drain Current
(5)
1. Pinch-off voltage is measured when I
ds
= 4.8 mA.
2. Test conditions unless otherwise noted: T = 25潞C, V
DS
= 9 V, I
DQ
= 450 mA, in a tuned application
circuit with Z
L
= Z
LOPT
, Z
S
= Z
SOPT
(optimized for output power).
3. 3OIP measured with two tones at an output power of +18 dBm/tone separated by 1 MHz. The
suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule.
4. Typical parameters represent performance in an application circuit.
5. Empirical measurements showed optimal power performance at a drain voltage = 9 volts at 450 mA.
Because the FP31QF is a discrete device, users can choose their own bias configuration. Performance
may vary from the data shown depending on the biasing conditions. To achieve a minimum 1 million
hours MTTF rating, the biasing condition should maintain a junction temperature below 160擄 C over all
operating temperatures. This can be approximated by (drain voltage) x (drain current) x 17.5擄 C/W +
(maximum operating temperature).
Absolute Maximum Rating
Parameter
Operating Case Temperature
Storage Temperature
DC Power
RF Input Power (continuous)
Drain to Gate Voltage, V
dg
Junction Temperature
-40 to +85
擄C
-55 to +125
擄C
7.5 W
6 dB above Input P1dB
+14 V
+220擄 C
Ordering Information
Part No.
FP31QF
FP31QF-F
FP31QF-PCB900
FP31QF-PCB1900
FP31QF-PCB2140
Rating
Description
2-Watt HFET
(Leaded QFN Pkg)
2-Watt HFET
(lead-free/RoHS-compliant QFN Pkg)
870 鈥?960 MHz Application Circuit
1930 鈥?1990 MHz Application Circuit
2110 鈥?2170 MHz Application Circuit
Operation of this device above any of these parameters may cause permanent damage.
Specifications and information are subject to change without notice
WJ Communications, Inc
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Phone 1-800-WJ1-4401
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FAX: 408-577-6621
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e-mail: sales@wj.com
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Web site: www.wj.com
November 2004
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