MOTOROLA MRF898

Order this document
by MRF898/D
SEMICONDUCTOR TECHNICAL DATA
The RF Line
. . . designed for 24 Volt UHF large–signal, common base amplifier applications
in industrial and commercial FM equipment operating in the range of
850 – 960 MHz.
• Motorola Advanced Amplifier Concept Package
60 W, 850 – 960 MHz
RF POWER
TRANSISTOR
NPN SILICON
• Specified 24 Volt, 900 MHz Characteristics
Output Power = 60 Watts
Power Gain = 7.0 dB Min
Efficiency = 60% Min
• Double Input/Output Matched for Wideband Performance and Simplified
External Matching
• Series Equivalent Large–Signal Characterization
• Gold Metallized, Emitter Ballasted for Long Life and Resistance to Metal
Migration
• Silicon Nitride Passivated
• Circuit board photomaster available upon request by contacting
RF Tactical Marketing in Phoenix, AZ.
CASE 333A–02, STYLE 1
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Collector–Emitter Voltage
VCEO
30
Vdc
Collector–Base Voltage
VCBO
55
Vdc
Emitter–Base Voltage
VEBO
4.0
Vdc
Collector Current — Continuous
IC
10
Adc
Total Device Dissipation @ TC = 25°C
Derate above 25°C
PD
175
1.0
Watts
W/°C
Storage Temperature Range
Tstg
– 65 to +150
°C
Symbol
Max
Unit
RθJC
1.0
°C/W
THERMAL CHARACTERISTICS
Characteristic
Thermal Resistance, Junction to Case
ELECTRICAL CHARACTERISTICS (TC = 25°C unless otherwise noted.)
Symbol
Min
Typ
Max
Unit
Collector–Emitter Breakdown Voltage
(IC = 50 mAdc, IB = 0)
V(BR)CEO
30
—
—
Vdc
Collector–Emitter Breakdown Voltage
(IC = 50 mAdc, VBE = 0)
V(BR)CES
55
—
—
Vdc
Emitter–Base Breakdown Voltage
(IE = 5.0 mAdc, IC = 0)
V(BR)EBO
4.0
—
—
Vdc
ICES
—
—
10
mAdc
Characteristic
OFF CHARACTERISTICS
Collector Cutoff Current
(VCE = 30 Vdc, VBE = 0, TC = 25°C)
(continued)
REV 6
RF DEVICE DATA
MOTOROLA
Motorola, Inc. 1994
MRF898
39
ELECTRICAL CHARACTERISTICS — continued (TC = 25°C unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
hFE
20
50
150
—
Cob
—
60
—
pF
Common–Base Amplifier Power Gain
(VCC = 24 Vdc, Pout = 60 W, f = 900 MHz)
Gpb
7.0
7.9
—
dB
Collector Efficiency
(VCC = 24 Vdc, Pout = 60 W, f = 900 MHz)
η
60
65
—
%
Output Mismatch Stress
(VCC = 24 Vdc, Pout = 60 W, f = 900 MHz,
VSWR = 5:1, all phase angles)
ψ
ON CHARACTERISTICS
DC Current Gain
(IC = 2.0 Adc, VCE = 5.0 Vdc)
DYNAMIC CHARACTERISTICS
Output Capacitance (1)
(VCB = 24 Vdc, IE = 0, f = 1.0 MHz)
FUNCTIONAL TESTS
No Degradation in Output Power
NOTE:
1. Value of “Cob” is that of die only. It is not measurable in MRF898 because of internal matching network.
L2
L3
B3
VRE
SHORTING
PLUG
B1
+ VCC
C9
B2
C10
C11
+
C4
+
C5 C6
C7
C8
C3
GND
GND
L1
L4
DUT
50
OHMS
C2
C1
TL1
TL2
TL3
TL4
TL5
TL6
50
OHMS
TL7
C12
B1, B2, B3 — Bead, Ferroxcube 56–390–65/3B
C1, C2, C12 — 39 pF, 100 Mil Chip Capacitor
C3, C11 — 91 pF, Mini Underwood or Equivalent
C4, C7, C9 — 10 µF, 35 V Electrolytic
C5 — 4000 pF, 1.0 kV Ceramic
C6, C10 — 1000 pF, 350 V Unelco or Equivalent
C8 — 47 pF, 100 Mil Chip Capacitor
L1, L4 — 4 Turns #18 AWG Choke
L2 — 11 Turns #20 AWG Choke on 10 Ohm, 1.0 Watt Resistor
L3 — 3 Turns #18 AWG Choke on 10 Ohm, 1.0 Watt Resistor
TL1, TL6 — 50 Ohm Microstrip
TL2 — 400 x 950 Mils
TL3, TL4 — 140 x 200 Mils
TL5 — 320 x 690 Mils
TL7 — 260 x 230 Mils
Board — 3M Epsilam–10, 50 Mil
Bias Boards — 1/32″ G10 or Equivalent
Figure 1. 850 – 960 MHz Broadband Test Circuit
MRF898
40
MOTOROLA RF DEVICE DATA
100
100
80
900 MHz
960 MHz
60
40
VCC = 24 V
20
Pin = 14 W
Pin = 16 W
Po, OUTPUT POWER (WATTS)
Po, OUTPUT POWER (WATTS)
850 MHz
80
12 W
60
10 W
8W
40
20
VCC = 24 V
8
10
12
14
16
Pin, INPUT POWER (WATTS)
0
18
850
Figure 2. Output Power versus Input Power
10
100
90
12 W
GPA
8
G PA , POWER GAIN (dB)
Po, OUTPUT POWER (WATTS)
Pin = 14 W
60
10 W
40
8W
70
6
40
VSWR
0
28
60
50
Pin = 12 W
VCC = 24 V
4
f = 900 MHz
22
24
26
VCC, SUPPLY VOLTAGE (VOLTS)
80
ηc
2
20
0
20
950
Figure 3. Output Power versus Frequency
100
80
900
f, FREQUENCY (MHz)
Figure 4. Output Power versus Supply Voltage
850
900
f, FREQUENCY (MHz)
1.3
30
1.2
20
1.1:1
10
η c , COLLECTOR EFFICIENCY (%)
6
INPUT
VSWR
0
0
960
Figure 5. Typical Broadband Circuit Performance
Po = 60 W, VCC = 24 V
F
MHz
Zin
Ohms
ZOL*
Ohms
850
11.2 + j2.3
4.0 + j3.9
900
8.2 – j1.0
4.4 + j1.8
960
4.7 – j2.0
5.3 + j3.7
ZOL* = Conjugate of the optimum load impedance
ZOL* = into which the device operates at a given
ZOL* = output power, voltage and frequency.
f = 850 MHz
960
ZOL*
900
f = 850 MHz
Zin
900
960
Figure 6. Input/Output Impedance versus Frequency
MOTOROLA RF DEVICE DATA
MRF898
41
PACKAGE DIMENSIONS
L
N
IDENTIFICATION
NOTCH
4
5
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
6
–B–
1
K
2
3
Q
2 PL
D
4 PL
F
2 PL
0.13 (0.005)
M
T A
2 PL
J
C
H
E
–T–
M
B
M
DIM
A
B
C
D
E
F
H
J
K
L
N
Q
STYLE 1:
PIN 1.
2.
3.
4.
5.
6.
INCHES
MIN
MAX
0.965
0.985
0.390
0.410
0.250
0.290
0.075
0.090
0.095
0.115
0.110
0.130
0.155
0.175
0.004
0.006
0.090
0.116
0.725 BSC
0.415
0.435
0.120
0.135
MILLIMETERS
MIN
MAX
24.52
25.01
9.91
10.41
6.35
7.36
1.91
2.28
2.42
2.92
2.80
3.30
3.94
4.44
0.11
0.15
2.29
2.94
18.41 BSC
10.55
11.04
3.05
3.42
BASE
EMITTER
BASE
BASE
COLLECTOR
BASE
–A–
SEATING
PLANE
CASE 333A–02
ISSUE C
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit,
and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different
applications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does
not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in
systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of
the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such
unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless
against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.
Motorola and
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.
Literature Distribution Centers:
USA: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036.
EUROPE: Motorola Ltd.; European Literature Centre; 88 Tanners Drive, Blakelands, Milton Keynes, MK14 5BP, England.
JAPAN: Nippon Motorola Ltd.; 4-32-1, Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan.
ASIA PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Center, No. 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong.
MRF898
42
◊
*MRF898/D*
MRF898/D
MOTOROLA RF DEVICE
DATA