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polyfet rf devices
F1401
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" TMprocess features
gold metal for greatly extended
lifetime. Low output capacitance
and high Ft enhance broadband
performance
PATENTED GOLD METALIZED
SILICON GATE ENHANCEMENT MODE
RF POWER VDMOS TRANSISTOR
35 Watts Single Ended
Package Style AP
HIGH EFFICIENCY, LINEAR,
HIGH GAIN, LOW NOISE
ABSOLUTE MAXIMUM RATINGS (TC = 25 Co )
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
50 Watts
3.5 oC/W
200 oC
-65 oC to 150oC
2A
150 V
150 V
30V
RF CHARACTERISTICS ( 35WATTS OUTPUT )
SYMBOL PARAMETER
MIN TYP MAX UNITS TEST CONDITIONS
Gps Common Source Power Gai
10
dB Idq = 0.1 A, Vds = 50.0 V, F = 400 MHz
η Drain Efficiency
75 % Idq = 0.1 A, Vds = 50.0 V, F = 400 MHz
VSWR Load Mismatch Toleranc
20:1 Relative Idq = 0.1 A, Vds = 50.0 V, F = 400 MHz
ELECTRICAL CHARACTERISTICS (EACH SIDE)
SYMBOL PARAMETER
MIN TYP MAX UNITS TEST CONDITIONS
Bvdss Drain Breakdown Voltag
125
V Ids = 0.05 A, Vgs = 0V
Idss Zero Bias Drain Curren
2 mA Vds = 50.0 V, Vgs = 0V
Igss Gate Leakage Curren
1 uA Vds = 0 V, Vgs = 30V
Vgs Gate Bias for Drain Curren
1 7 V Ids = 0.1 A, Vgs = Vds
gM Forward Transconductanc
0.8
Mho
Vds = 10V, Vgs = 5V
Rdson Saturation Resistanc
1
Ohm
Vgs = 20V, Ids = 2A
Idsat
Saturation Curren
4.8
Amp
Vgs = 20V, Vds = 10V
Ciss
Common Source Input Capacitanc
45 pF Vds = 50.0 V, Vgs = 0V, F = 1 MHz
Crss
Common Source Feedback Capacitanc
2.2
pF Vds = 50.0 V, Vgs = 0V, F = 1 MHz
Coss
Common Source Output Capacitanc
20 pF Vds = 50.0 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:www.polyfet.com

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F1401
POUT VS PIN GRAPH
40
35
30
25
20
15
10
5
0
0
F-1401 PIN VS POUT F=400 MHZ; IDQ=0.2A; VDS=50.0V
Efficiency = 75%
0.5 1 1.5 2 2.5 3 3.5
PIN IN WATTS
POUT
GAIN
16
15
14
13
12
11
10
9
8
4
CAPACITANCE VS VOLTAGE
F1E 1 DIE CAPACITANCE
100
Ciss
10
Crss
Coss
1
0 5 10 15 20 25 30 35 40 45 50
VDS IN VOLTS
IV CURVE
F1E 1 DIE IV
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0 2 4 6 8 10 12 14 16 18 20
VDSINVOLTS
vg=2v Vg=4v Vg=6v vg=8v 0 vg=12v
ID AND GM VS VGS
F1E1DIE ID&GMVsVG
10.00
Id
1.00
gM
0.10
0.01
0 2 4 6 8 10 12 14 16 18
Vgs inVolts
S11 AND S22 SMITH CHART
PACKAGE DIMENSIONS IN INCHES
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:www.polyfet.com