MA-COM DU2880U

RF MOSFET Power Transistor, 8OW, 28V
2 - 175 MHz
DU2880U
Features
N-Channel Enhancement Mode Device
DMOS Structure
Lower Capacitances for Broadband Operation
High Saturated Output Power
Lower Noise Figure Than Competitive Devices
Absolute Maximum Ratings at 25°C
1U
Speciftcations Subject to Change Without Notice.
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
n
Asia/Pacific:
Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
w
Europe:
Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
RF MOSFET Power Transistor,
DU2880U
8OW, 28V
v2.00
Typical Broadband Performance
EFFICIENCY
Curves
GAIN vs FREQUENCY
vs FREQUENCY
V I,,=400 mA P,,,=80 W
I’,,=28
25
.”
50
25
150
100
FREQUENCY
175
25
50
V,,=28 V lDQ=400mA
)
5
2
80
k
z
80
40
5
20
VOLTAGE
mA F-175 MHz P,,=3.0 W
I
30
loo
I,,=400
175
150
(MHz)
POWER OUTPUT vs SUPPLY
POWER OUTPUT vs POWER INPUT
120
100
FREQUENCY
(MHz)
120 .
MHz
F
loo
175
MHz
f
100 MHz
0:
0.1
0.2
0.3
-
80.
01
1
2
4
3
5
13
75
20
25
30
33
SUPPLY VOLTAGE(V)
POWER INPUT(W)
Typical Device Impedance
z,, (OHMS)
2 LOAD
(OHMS)
30
5.4 - i 4.4
5.7 + j 4.7
1 50
1 2.5 - j 4.4
1 3.4 + j 3.5
I
1
1 2.4 + j 2.4
I
Frequency
I 100
(MHz)
~~
1.6-j3.4
1.7+jO.8
0.7 - j 1.2
175
V,,=28 V, I,,=400 mA, P,,,=80 Watts
Z,, is the series equivalent input impedance of the device from gate to source.
ZLOAD
is the optimum series equivalent load impedance as measured from drain to ground.
Specifications
Subject to Change Without Notice.
MIA-COM,
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
s
Asia/Pacific:
Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
=
Europe:
Inc.
Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
RF MOSFET Power Transistor,
DU2880U
8OW, 28V
v2.00
RF Test Fixture
VGS
VDS
J3
J4
VDS = 28 VOLTS
IDQ = 400mA
L3
RF IN
Jl
RF OUT
I2
Ql
C8
I
A
..
Cl
I
J2
c9
c7
-l--L
-
-/-
-J
-
PARTS LIST
Cl $3
TRIMMER
C2,C9,ClO
CAPACITOR
CAPACITOR
5OpF
C4,Cll
CAPACITOR
1 OOOpF
CS
MONOLITHIC
C6,CB
TRIMMER
4-4OpF
CIRCUIT CAPACITOR
CAPACITOR
c7
CAPACITOR
Cl2
ELECTROLYTIC
O.OluF
9-18OpF
15pF
CAPACITOR
5OuF 50 VOLT
Ll
NO. 12 AWG COPPER WIRE X 1 .18” (LOOP 0.5”)
L2
NO. 12 AWG COPPER WIRE X 1” (LOOP 0.4”)
L3,L4
8 TURNS OF NO. 18 AWG ENAMEL
WIRE ON
‘0.25”, CLOSE WOUND
Rl
RESISTOR 300 OHMS 0.5 WAlT
Fl2
RESISTOR 2.7K OHMS 0.25 WA-IT
01
DU2880U
BOARD
FR4 0.062
Specifications Subject to Change Without Notice.
M/A-COM,
Inc.
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
n
Asia/Pacific:
Tel. +81 (03) 3226-1671
Fax +8l (03) 3226-1451
n
Europe:
Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020