Page 1
=z =s
.--
*
an AMP company
-z-= -
- = a-=
---
--a
=- = =
RF MOSFET Power Transistor, IOW, 28V
500 - 1000 MHz
Features
N-Channel Enhancement Mode Device
DMOS Structure
Lower Capacitances for Broadband Operation
Common Source Configuration
Lower Noise Floor
Applications
Broadband Linear Operation
500‘tiHz to 1200 MHz
Absolute Maximum Ratings at 25°C
LF281 OA
Electrical Characteristics at 25°C
Output Capacitance
Reverse Capacitance
Power Gain
Drain Efficiency
Load Mismatch Tolerance
C
ass
C
RSS
GP
q0
VSWR-T -
F
G
H
J
K
L
10 pF
4.8 pF
10 - dB
50 -
2O:l - V,,=28.0 V, I,,=1 00 mA, P,,=lO.O W, F=l .O GHz
V,,=28.0 V, F=l .O MHz
V,,=26.0 V, F=l .O MHz
V,,=28.0 V, I,,=1 00 mA, P,,=lO.O W, F=l .O GHz
V,,=28.0 V, I,,,=1 00 mA, P,,=lO.O W, F=l .O GHz
%
6.22 6048 ,245
Ll4 1.40 ,045
2.92 310 .I15
L40 1.65 ,055
1.96 2.46 -077
3.61 4.37 642
z?ss
.055
x5
,065
,097
572
Specifica!ions Subject to Change Without Notice.
Page 2
RF MOSFET Power Transistor, IOW, 28V LF281 OA
v2.w
Typical Broadband Performance Curves
20
CAPACITANCES vs VOLTAGE
F=l .O MHz
GAIN vs FREQUENCY
V,,=28 V I,,=100 mA Po,,=lO W
5.5
POWER OUTPUT vs VOLTAGE
F=l.OGHz P,,=l.O W l,o=lOO mA
5
10
15
20
v,, (V)
25
30
36
EFFICIENCY vs FREQUENCY
V,,,=28 V l,o=lOO mA Po,,=l 0 W
1
iii
500
700 1000
FREQUENCY (MHz)
12w
500 750 1000 1250 1400
POWER OUTPUT vs POWER OUTPUT
V,,=28 V I,,=200 mA
0
0.5
1
POWER INPUT(W)
1.5
2
2.5
FREQUENCY (MHz)
3
Page 3
RF MOSFET Power Transistor, lOW, 28V
Typical Device Impedance
LF281 OA
V2.00
Frequency (MHz)
500
( 1000 1 1.4+j 1.0
) 1200
&, (OHMS)
0.60 - j 9.5
1 1.5+ j 3.5
( G,,, (OHMS)
10.0 + j 17.0
1 4.85 + j 7.9
1 5.7 + j 5.7
V,,=28 V, I,,=1 00. mA, PO,,.=1 0 Watts
Z,, is the series equivalent input impedance of the device from gate to source.
LOAD is the optimum series equivalent load impedance as measured from drain to ground.
z
. .
RF Test Fixture
,015 uf (3 PL>
POWER SUPPL .Y
CONNECTOR (2 PL)
r ,130’
JACK (3 PL>
7
\
TURNS OF 18 PlWG (2 PL)
SUBSTRATE ,031: Er = 2.54
-L
50 uf @ 50 VOLTS
~ r560 pf ATC (2 PL>
I
,I
-j .725’ rt-l-970’-
*1.040’
t-t-
+-- 2.240’-
1
1,360’-
J
Loading...