LX803 Datasheet, PDF (1/2 Pages) Polyfet RF Devices – SILICON GATE ENHANCEMENT MODE RF POWER LDMOS TRANSISTOR

polyfet rf devices
LX803
General Description
Silicon VDMOS and LDMOS
transistors designed specifically
SILICON GATE ENHANCEMENT MODE
for broadband RF applications.
Suitable for Military Radios,
RF POWER LDMOS TRANSISTOR
Cellular and Paging Amplifier Base
Stations, Broadcast FM/AM, MRI,
45 Watts Single Ended
Laser Driver and others.
"Polyfet"^TM process features low
Package Style LX2
feedback and output capacitances
resulting in high F_t transistors with
high input impedance and high
HIGH EFFICIENCY, LINEAR,
HIGH GAIN, LOW NOISE
efficiency.
o
ABSOLUTE MAXIMUM RATINGS (TC = 25 C)
Total
Device
Dissipation
Junction to
Case Thermal
Resistance
Maximum
Junction
Temperature
Storage
Temperature
DC Drain
Current
Drain to
Gate
Voltage
Drain to
Source
Voltage
Gate to
Source
Voltage
120 Watts
1.25 ^oC/W
200 ^oC
-65 ^oC to 150^oC
6A
70 V
70 V
20 V
RF CHARACTERISTICS ( 45WATTS OUTPUT )
SYMBOL PARAMETER
MIN
TYP MAX UNITS TEST CONDITIONS
Gps
Common Source Power Gain
11
dB Idq = 1.2 A, Vds = 28.0 V, F = 1000 MHz
η
VSWR
Drain Efficiency
Load Mismatch Tolerance
55
% Idq = 1.2 A, Vds = 28.0 V, F = 1000 MHz
20:1 Relative Idq = 1.2 A, Vds = 28.0 V, F = 1000 MHz
ELECTRICAL CHARACTERISTICS (EACH SIDE)
SYMBOL PARAMETER
MIN
TYP MAX UNITS TEST CONDITIONS
Bvdss Drain Breakdown Voltage
65
V
Ids = 0.2 A, Vgs = 0V
Idss
Zero Bias Drain Current
3
mA
Vds = 28.0V, Vgs = 0V
Igss
Gate Leakage Current
1
uA
Vds = 0 V, Vgs = 30V
Vgs
Gate Bias for Drain Current
1
7
V
Ids = 0.3 A, Vgs = Vds
gM
Forward Transconductance
2.4
Mho
Vds = 10V, Vgs = 5V
Rdson Saturation Resistance
0.35
Ohm
Vgs = 20V, Ids = 7.5 A
Idsat
Saturation Current
16.5
Amp
Vgs = 20V, Vds = 10V
Ciss
Common Source Input Capacitance
90
pF
Vds = 28.0 V, Vgs = 0V, F = 1 MHz
Crss
Common Source Feedback Capacitance
3
pF
Vds = 28.0 V, Vgs = 0V, F = 1 MHz
Coss
Common Source Output Capacitance
45
pF
Vds = 28.0 V, Vgs = 0V, F = 1 MHz
POLYFET RF DEVICES
REVISION 8/31/99
1110 Avenida Acaso, Camarillo, CA 93012 TEL:[phone] FAX:[phone] EMAIL:[e-mail] URL:www.polyfet.com