POLYFET RF DEVICES F1280 Datasheet
80
General Description
η
12.5
V, Vgs = 0V,
V, Vgs = 0V,
V, Vgs = 0V,
F1280
polyfet rf devices
8/1/97
Silicon VDMOS and LDMOS
transistors designed specifically
for broadband RF applications.
Suitable for Military Radios,
PATENTED GOLD METALIZED
SILICON GATE ENHANCEMENT MODE
RF POWER
VDMOSTRANSISTOR
Cellular and Paging Amplifier Base
Stations, Broadcast FM/AM, MRI,
80Watts Single Ended
Laser Driver and others.
"Polyfet" process features
TM
Package Style AT
gold metal for greatly extended
lifetime. Low output capacitance
and high F enhance broadband
t
HIGH EFFICIENCY, LINEAR,
HIGH GAIN, LOW NOISE
performance
ABSOLUTE MAXIMUM RATINGS (TC = 25 C)
Total
Device
Dissipation Resistance Temperature Voltage Voltage Voltage
190Watts 0.9
Junction to
Case Thermal
o
C/W
Maximum
Junction
o
C
200 -65 to 150
Storage
Temperature
o
C
DC Drain
Current
o
C
12 A
o
Drain to
Gate
Drain to
Source
VV50 50
Gate to
Source
RF CHARACTERISTICS ( WATTS OUTPUT )
SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS
Gps
Common Source Power Gai
10
dB
Idq =
2.4
A,
12.5Vds = V,
F = 175MHz
30V
VSWR
Drain Efficiency
Load Mismatch Toleranc
60
20:1
%
Relative
Idq =
Idq =
2.4
2.4
A,
A,
ELECTRICAL CHARACTERISTICS (EACH SIDE)
SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS
Bvdss
Idss
Igss
Vgs
gM
Rdson
Idsat
Ciss
Crss
Coss
Drain Breakdown Voltag
Zero Bias Drain Curren
Gate Leakage Curren
Gate Bias for Drain Curren
Forward Transconductanc
Saturation Resistanc
Saturation Curren
Common Source Input Capacitanc
Common Source Feedback Capacitanc
Common Source Output Capacitanc
40
6
1
71
4.8
0.15
45
240
36
180
V
mA
uA
V
Mho
Ohm
Amp
pF
pF
pF
POLYFET RF DEVICES
0.3Ids = A,
Vds = V, Vgs = 0V
Vds = 0 V, Vgs = 30V
0.6Ids = A, Vgs = Vds
Vds = 10V, Vgs = 5V
Vgs = 20V, Ids =48
Vgs = 20V, Vds = 10V
12.5Vds =
12.5Vds =
12.5Vds =
REVISION
12.5Vds = V,
12.5Vds = V,
Vgs = 0V
A
F = 175MHz
F = 175MHz
F = 1 MHz
F = 1 MHz
F = 1 MHz
1110 Avenida Acaso, Camarillo, CA 93012 TEL:(805) 484-4210 FAX:(805) 484-3393 EMAIL:Sales@polyfet.com URL:www.polyfet.com
F1280 POUT VS PIN F=175 MHZ; IDQ=2.4A;
F1280
8/1/97
POUT VS PIN GRAPH
VDS=12.5V
90
80
70
60
50
40
30
20
10
0
0 2 4 6 8 10 12
Efficiency = 65%
PIN IN WATTS
POUT GAIN
IV CURVE ID AND GM VS VGS
F1C 6 DIE IV CURVE
60
50
40
30
20
10
0
0 2 4 6 8 10 12 14 16 18 20
Vg = 2V Vg = 4V Vg = 6V Vg = 8V Vg = 10V Vg = 12V
Vds in Volts
17.00
16.00
15.00
14.00
13.00
12.00
11.00
10.00
9.00
8.00
CAPACITANCE VS VOLTAGE
F1C 6DIE CAPACITANCE
1000
Coss
100
Crss
10
0 5 10 15 20 25 30
100
10
1
0.1
0 2 4 6 8 10 12 14 16 18 20
VDS IN VOLTS
F1C 6 DICE ID & GM VS VG
Vgs in Volts
GM ID
Ciss
Id
Gm
S11 AND S22 SMITH CHART PACKAGE DIMENSIONS IN INCHES
POLYFET RF DEVICES
1110 Avenida Acaso, Camarillo, CA 93012 TEL:(805) 484-4210 FAX:(805) 484-3393 EMAIL:Sales@polyfet.com URL:www.polyfet.com
REVISION
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