MA-COM DU2805S

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an AMP company
RF MOSFET
2 - 175 MHz
Power
Transistor,
5W, 28V
DU2805S
v2.00
Features
l
l
l
l
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N-Channel Enhancement Mode Device
DMOS Structure
Lower Capacitances for Broadband Operation
High Saturated Output Power
Lower Koise Figure Than Bipolar Devices
Absolute Maximum Ratings at 25°C
Parameter
Symbol
Rating
Units
V
Drain-SourceVoltage
VOS
65
Gate-Source Voltage
V0s
20
I
v
1.4
I
*
Drain-Source Current
I
‘05
I
Power Dissipation
PO
15.8
W
JunctionTemperature
T,
200
“C
( Storage Temperature
Thermal Resistance
I
TSTG
0JC
Electrical Characteristics
Specifications
1 -55to+150
11.1
I
“C
I
I
“C/w
at 25°C
Subject to Change Without Notlce.
M/A-COM,
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
m Asia/Pacific:
Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
l
Europe:
Inc.
Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
RF MOSFET Power Transistor,
DU2805S
5W, 28V
v2.00
Typical Broadband Performance
CAPACITANCES
Curves
vs VOLTAGE
GAIN vs FREQUENCY
F=l .O MHz
V,,=28
25
V I,,=50
mA P,,&O
W
10
60
100
v,, w
POWER OUTPUT
V,,=28
vs POWER INPUT
V I,,=50
POWER OUTPUT
mA
V,,=28
V IDo=
5
10
200
150
FREQUENCY
(MHz)
vs VOLTAGE
mA F=175 MHz P,,=315 mW
6
5
z
t4
2
$3
1
/
0
0.01
0.02
0.04
0.1
0.2
POWER INPUT(W)
0.3
0.4
2.5
0.45
M/A-COM,
20
25
30
35
v,, (V)
- Continued
Specifications
15
Subject to Change Wiiout
next page -
Notice.
Inc.
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
=
Asia/Pacific:
Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
n
Europe:
Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
RF MOSFET Power Transistor,
DU2805S
5W, 28V
v2.00
Typical Device Impedance
Frequency
(MHz)
Z,, (OHMS)
1
Z,,,,
15.0 - j 121.0
(
57.0 + j 23.0
I
39.0 - j 77.0
1
55.0 + i 23.0
1
41 .O - j 38.0
1
56.0+ j 19.0
100
200
34.0 - j 14.0
V,,=28
Z,, is the series equivalent
input impedance
is the optimum series equivalent
Z LOAD
(OHMS)
1
56.0 + j 20.0
V, I,,=50
mA, POUT=5Watts
of the device from gate to gate.
load impedance
as measured
from drain to ground.
RF Test Fixture
VDS
-IL
J4
L
0
T
PARTS LIST
Cl
TRIMMER CAPACITOR 5-8OpF
c2
TRIMMER CAPACITOR 7-1OOpF
c3
CAPACITOR 15pF
wc5
TRIMMER CAPACfTOR 918OpF
C6,CB
CAPACITOR 1OOOpF
c7
CAPACITOR 5OOpF
c9
FEEDTHROUGH CAPACITOR 1OOOpF
Cl0
ELECTROLYTIC
Ll
2 TURNS OF NO. 12 AWG ON ‘0.25
CAPACITOR 25uF 50 VOLTS
I2
8 TURNS OF NO. 12 AWG ON ‘0.25
1 TURN OF NO. 12 AWG W/ SIEMENS DOUBLE
L3
APERTURE CORE B62152-AOOOl-X001
Ql
DU2805S
BOARD
FR4 0.062”
Specifications Subject to Change Without Notice.
M/A-COM,
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
n
Asia/Pacific:
Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
Europe:
Inc.
Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020