polyfet rf devices
General Description
Silicon VDMOS and LDMOS
transistors designed specifically
for broadband RF applications.
Suitable for Military Radios,
Cellular and Paging Amplifier Base
Stations, Broadcast FM/AM, MRI,
Laser Driver and others.
"Polyfet" process features
gold metal for greatly extended
lifetime. Low output capacitance
and high F
t
enhance broadband
performance
TM
F1108
PATENTED GOLD METALIZED
SILICON GATE ENHANCEMENT MODE
RF POWER VDMOS TRANSISTOR
80 Watts Gemini
Package Style AK
HIGH EFFICIENCY, LINEAR,
HIGH GAIN, LOW NOISE
ABSOLUTE MAXIMUM RATINGS (TC = 25 C)
Total
Device
Dissipation
170 Watts
Junction to
Case Thermal
Resistance
0.95
o
C/W
Maximum
Junction
Temperature
200
o
C
Storage
Temperature
DC Drain
Current
Drain to
Gate
Voltage
70 V
Drain to
Source
Voltage
70 V
Gate to
Source
Voltage
30V
o
-65
o
C to 150
o
C
8 A
RF CHARACTERISTICS (
SYMBOL
Gps
PARAMETER
Common Source Pow er Gain
Drain Efficiency
Load Mismatch Tolerance
MIN
11
55
TYP
80WATTS OUTPUT )
MAX
UNITS
dB
%
20:1
Relative
TEST CONDITIONS
Idq = 0.8 A, Vds = 28.0 V, F = 400 MHz
Idq = 0.8 A, Vds = 28.0 V, F = 400 MHz
Idq = 0.8 A, Vds = 28.0 V, F = 400 MHz
畏
VSWR
ELECTRICAL CHARACTERISTICS (EACH SIDE)
SYMBOL
Bvdss
Idss
Igss
Vgs
gM
Rdson
Idsat
Ciss
Crss
Coss
PARAMETER
Drain Breakdow n Voltage
Zero Bias Drain Current
Gate Leakage Current
Gate Bias for Drain Current
Forw ard Transconductance
Saturation Resistance
Saturation Current
Common Source Input Capacitance
Common Source Feedback Capacitance
Common Source Output Capacitance
1
2
0.7
12
80
10
60
MIN
65
2
1
7
TYP
MAX
UNITS
V
mA
uA
V
Mho
Ohm
Amp
pF
pF
pF
TEST CONDITIONS
Ids =
0.1 A,
Vgs = 0V
Vgs = 0V
Vgs = 30V
Vgs = Vds
Vds = 28.0 V,
Vds = 0 V,
Ids = 0.2 A,
Vds = 10V, Vgs = 5V
Vgs = 20V, Ids = 8 A
Vgs = 20V, Vds = 10V
Vds = 28.0 V, Vgs = 0V, F = 1 MHz
Vds = 28.0 V, Vgs = 0V, F = 1 MHz
Vds = 28.0 V, Vgs = 0V, F = 1 MHz
POLYFET RF DEVICES
REVISION
8/1/97
1110 Avenida Acaso, Camarillo, CA 93012 TEL:(805) 484-4210 FAX:(805) 484-3393 EMAIL:Sales@polyfet.com URL:w w w .polyfet.com
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