Freescale Semiconductor
Technical Data
Document Number: MRF9045
Rev. 11, 9/2008
N--Channel Enhancement--Mode Lateral MOSFETs
Designed for broadband commercial and industrial applications with
frequencies up to 1000 MHz. The high gain and broadband performance of
these devices make them ideal for large--signal, common--source amplifier
applications in 28 volt base station equipment.
•
Typical Two--Tone Performance at 945 MHz, 28 Volts
Output Power — 45 Watts PEP
Power Gain — 18.8 dB
Efficiency — 42%
IMD — --32 dBc
•
Capable of Handling 10:1 VSWR, @ 28 Vdc, 945 MHz, 45 Watts CW
Output Power
Features
•
Integrated ESD Protection
•
Designed for Maximum Gain and Insertion Phase Flatness
•
Excellent Thermal Stability
•
Characterized with Series Equivalent Large--Signal Impedance Parameters
•
Low Gold Plating Thickness on Leads. L Suffix Indicates 40μ″ Nominal.
•
RoHS Compliant
•
In Tape and Reel. R1 Suffix = 500 Units per 32 mm, 13 inch Reel.
MRF9045LR1
MRF9045LSR1
945 MHz, 45 W, 28 V
LATERAL N-
-CHANNEL
BROADBAND
RF POWER MOSFETs
CASE 360B-
-05, STYLE 1
NI-
-360
MRF9045LR1
CASE 360C-
-05, STYLE 1
NI-
-360S
MRF9045LSR1
Table 1. Maximum Ratings
Rating
Symbol
V
DSS
V
GS
MRF9045LR1
MRF9045LSR1
Storage Temperature Range
Case Operating Temperature
Operating Junction Temperature
T
stg
T
C
T
J
P
D
Value
-- 0.5, +65
-- 0.5, + 15
125
0.71
175
1
-- 65 to +150
150
200
Unit
Vdc
Vdc
W
W/°C
Drain--Source Voltage
Gate--Source Voltage
Total Device Dissipation @ T
C
= 25°C
Derate above 25°C
°C
°C
°C
Table 2. Thermal Characteristics
Characteristic
Thermal Resistance, Junction to Case
MRF9045LR1
MRF9045LSR1
Symbol
R
θJC
Value
1.4
1.0
Unit
°C/W
Table 3. ESD Protection Characteristics
Test Conditions
Human Body Model
Machine Model
Class
1 (Minimum)
M1 (Minimum)
©
Freescale Semiconductor, Inc., 2008. All rights reserved.
MRF9045LR1 MRF9045LSR1
1
RF Device Data
Freescale Semiconductor
LAST ORDER 1 JUL 11 LAST SHIP 30 JUN 12
RF Power Field Effect Transistors
LIFETIME BUY
Table 4. Electrical Characteristics
(T
C
= 25°C unless otherwise noted)
Characteristic
Off Characteristics
Zero Gate Voltage Drain Leakage Current
(V
DS
= 65 Vdc, V
GS
= 0 Vdc)
Zero Gate Voltage Drain Leakage Current
(V
DS
= 28 Vdc, V
GS
= 0 Vdc)
Gate--Source Leakage Current
(V
GS
= 5 Vdc, V
DS
= 0 Vdc)
On Characteristics
Gate Threshold Voltage
(V
DS
= 10 Vdc, I
D
= 150
μAdc)
Gate Quiescent Voltage
(V
DS
= 28 Vdc, I
D
= 350 mAdc)
Drain--Source On--Voltage
(V
GS
= 10 Vdc, I
D
= 1 Adc)
Forward Transconductance
(V
DS
= 10 Vdc, I
D
= 3 Adc)
V
GS(th)
V
GS(Q)
V
DS(on)
g
fs
2
—
—
—
3
3.7
0.19
4
4
—
0.4
—
Vdc
Vdc
Vdc
S
I
DSS
I
DSS
I
GSS
—
—
—
—
—
—
10
1
1
μAdc
μAdc
μAdc
Symbol
Min
Typ
Max
Unit
Dynamic Characteristics
Input Capacitance
(V
DS
= 28 Vdc
±
30 mV(rms)ac @ 1 MHz, V
GS
= 0 Vdc)
Output Capacitance
(V
DS
= 28 Vdc
±
30 mV(rms)ac @ 1 MHz, V
GS
= 0 Vdc)
Reverse Transfer Capacitance
(V
DS
= 28 Vdc
±
30 mV(rms)ac @ 1 MHz, V
GS
= 0 Vdc)
C
iss
C
oss
C
rss
—
—
—
69
37
1.5
—
—
—
pF
pF
pF
(continued)
MRF9045LR1 MRF9045LSR1
2
RF Device Data
Freescale Semiconductor
LAST ORDER 1 JUL 11 LAST SHIP 30 JUN 12
LIFETIME BUY
Table 4. Electrical Characteristics
(T
C
= 25°C unless otherwise noted)
(continued)
Characteristic
Functional Tests
(In Freescale Test Fixture, 50 ohm system)
Two--Tone Common--Source Amplifier Power Gain
(V
DD
= 28 Vdc, P
out
= 45 W PEP, I
DQ
= 350 mA,
f1 = 945.0 MHz, f2 = 945.1 MHz)
Two--Tone Drain Efficiency
(V
DD
= 28 Vdc, P
out
= 45 W PEP, I
DQ
= 350 mA,
f1 = 945.0 MHz, f2 = 945.1 MHz)
3rd Order Intermodulation Distortion
(V
DD
= 28 Vdc, P
out
= 45 W PEP, I
DQ
= 350 mA,
f1 = 945.0 MHz, f2 = 945.1 MHz)
Input Return Loss
(V
DD
= 28 Vdc, P
out
= 45 W PEP, I
DQ
= 350 mA,
f1 = 945.0 MHz, f2 = 945.1 MHz)
Two--Tone Common--Source Amplifier Power Gain
(V
DD
= 28 Vdc, P
out
= 45 W PEP, I
DQ
= 350 mA,
f1 = 930.0 MHz, f2 = 930.1 MHz and f1 = 960.0 MHz,
f2 = 960.1 MHz)
Two--Tone Drain Efficiency
(V
DD
= 28 Vdc, P
out
= 45 W PEP, I
DQ
= 350 mA,
f1 = 930.0 MHz, f2 = 930.1 MHz and f1 = 960.0 MHz,
f2 = 960.1 MHz)
3rd Order Intermodulation Distortion
(V
DD
= 28 Vdc, P
out
= 45 W PEP, I
DQ
= 350 mA,
f1 = 930.0 MHz, f2 = 930.1 MHz and f1 = 960.0 MHz,
f2 = 960.1 MHz)
Input Return Loss
(V
DD
= 28 Vdc, P
out
= 45 W PEP, I
DQ
= 350 mA,
f1 = 930.0 MHz, f2 = 930.1 MHz and f1 = 960.0 MHz,
f2 = 960.1 MHz)
Power Output, 1 dB Compression Point
(V
DD
= 28 Vdc, P
out
= 45 W CW, I
DQ
= 350 mA,
f1 = 945.0 MHz)
Common--Source Amplifier Power Gain
(V
DD
= 28 Vdc, P
out
= 45 W CW, I
DQ
= 350 mA,
f1 = 945.0 MHz)
Drain Efficiency
(V
DD
= 28 Vdc, P
out
= 45 W CW, I
DQ
= 350 mA,
f1 = 945.0 MHz)
G
ps
17
18.8
—
dB
Symbol
Min
Typ
Max
Unit
η
38
42
—
%
IMD
—
--32
--28
dBc
IRL
—
--14
--9
dB
G
ps
—
18.5
—
dB
η
—
41
—
%
IMD
—
--33
—
dBc
IRL
—
13
—
dB
P
1dB
—
55
—
W
G
ps
—
18
—
dB
η
—
60
—
%
MRF9045LR1 MRF9045LSR1
RF Device Data
Freescale Semiconductor
3
LAST ORDER 1 JUL 11 LAST SHIP 30 JUN 12
LIFETIME BUY
B2
C14
L2
V
GG
B1
+
C6
C7
L1
Z8
C9
Z9
C8
RF
INPUT Z1
C4
C1 Z2
Z3
Z4
Z5
Z6
Z7
C5
C2
C3
+
C15
+
C16
+
C17
V
DD
Z10
Z11
Z12
C10
Z13
RF
OUTPUT
Z14 C13 Z15
C12
C11
B1
B2
C1, C7, C13, C14
C2, C3, C11
C4, C5, C8, C9
C6, C15, C16
C10
C12
C17
L1, L2
Z1
Z2
Z3
Short Ferrite Bead Surface Mount
Long Ferrite Bead Surface Mount
47 pF Chip Capacitors
0.8--8.0 pF Gigatrim Variable Trim Capacitors
10 pF Chip Capacitors
10
μF,
35 V Tantalum Surface Mount Chip Capacitors
2.2 pF Chip Capacitor
0.7 pF Chip Capacitor -- MRF9045LS
1.3 pF Chip Capacitor -- MRF9045
220
μF,
50 V Electrolytic Capacitor
12.5 nH Surface Mount Inductors, Coilcraft
0.260″ x 0.080″ Microstrip
0.610″ x 0.120″ Microstrip
0.260″ x 0.320″ Microstrip
Z4
Z5
Z6
Z7
Z8
Z9
Z10
Z11
Z12
Z13
Z14
Z15
PCB
0.360″ x 0.320″ Microstrip
0.240″ x 0.320″ x 0.620″, Taper
0.140″ x 0.620″ Microstrip
0.510″ x 0.620″ Microstrip
0.330″ x 0.320″ Microstrip
0.140″ x 0.320″ Microstrip
0.070″ x 0.080″ Microstrip
0.240″ x 0.080″ Microstrip
0.140″ x 0.080″ Microstrip
0.930″ x 0.080″ Microstrip
0.180″ x 0.080″ Microstrip
0.350″ x 0.080″ Microstrip
Arlon GX--0300--55--22, 0.03″,
ε
r
= 2.55
Figure 1. 930 - 960 MHz Broadband Test Circuit Schematic
-
C6
V
DD
B2
C7
C14
WB1
C1
WB2
L1
C2
C3
C5
C9
C8
L2
C15 C16
C17
V
GG
B1
C13
C10
C11
C12
CUT OUT AREA
C4
MRF9045
900 MHz
Rev--01
Freescale has begun the transition of marking Printed Circuit Boards (PCBs) with the Freescale Semiconductor signature/-
logo. PCBs may have either Motorola or Freescale markings during the transition period. These changes will have no impact
on form, fit or function of the current product.
Figure 2. 930 - 960 MHz Broadband Test Circuit Component Layout
-
MRF9045LR1 MRF9045LSR1
4
RF Device Data
Freescale Semiconductor
LAST ORDER 1 JUL 11 LAST SHIP 30 JUN 12
LIFETIME BUY
TYPICAL CHARACTERISTICS
η
, DRAIN
EFFICIENCY (%)
20
19
G ps , POWER GAIN (dB)
18
17
16
15
14
13
12
930
IMD
IRL
G
ps
η
V
DD
= 28 Vdc
P
out
= 45 W (PEP)
I
DQ
= 350 mA
Two--Tone Measurement,
100 kHz Tone Spacing
55
50
45
40
--30
--32
--34
--36
940
945
950
f, FREQUENCY (MHz)
955
--38
960
IMD, INTERMODULATION
DISTORTION (dBc)
--12
IRL, INPUT RETURN
LOSS (dB)
--14
935
--16
LIFETIME BUY
Figure 3. Class AB Broadband Circuit Performance
IMD, INTERMODULATION DISTORTION (dBc)
20.0
19.5
19.0
18.5
18.0
17.5
17.0
16.5
0.5
1
V
DD
= 28 Vdc
f1 = 945 MHz
10
P
out
, OUTPUT POWER (WATTS) PEP
100
I
DQ
= 525 mA
400 mA
350 mA
300 mA
--10
--20
--30
--40
--50
--60
--70
V
DD
= 28 Vdc
f1 = 945 MHz
f2 = 945.1 MHz
I
DQ
= 300 mA
525 mA
350 mA
400 mA
0.5
1
10
100
P
out
, OUTPUT POWER (WATTS) PEP
Figure 4. Power Gain versus Output Power
Figure 5. Intermodulation Distortion versus
Output Power
IMD, INTERMODULATION DISTORTION (dBc)
--10
--20
--30
--40
--50
--60
--70
--80
--90
0.5
18
17
16
15
14
13
0.1
1
10
η
V
DD
= 28 Vdc
I
DQ
= 350 mA
f1 = 945 MHz
100
50
40
30
20
10
0
3rd Order
5th Order
7th Order
1
10
100
P
out
, OUTPUT POWER (WATTS) PEP
P
out
, OUTPUT POWER (WATTS) PEP
Figure 6. Intermodulation Distortion Products
versus Output Power
Figure 7. Power Gain, Efficiency versus
Output Power
MRF9045LR1 MRF9045LSR1
RF Device Data
Freescale Semiconductor
η
, DRAIN EFFICIENCY (%)
Gps, POWER GAIN (dB)
V
DD
= 28 Vdc
I
DQ
= 350 mA
f1 = 945 MHz
f2 = 945.1 MHz
20
19
G
ps
70
60
5
LAST ORDER 1 JUL 11 LAST SHIP 30 JUN 12
G ps , POWER GAIN (dB)
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