MOTOROLA MRF338

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by MRF338/D
SEMICONDUCTOR TECHNICAL DATA
The RF Line
Designed primarily for wideband large–signal output and driver amplifier
stages in the 400 to 512 MHz frequency range.
• Specified 28 Volt, 470 MHz Characteristics
Output Power = 80 Watts
Minimum Gain = 7.3 dB
Efficiency = 50% (Min)
80 W, 400 to 512 MHz
CONTROLLED “Q”
BROADBAND RF POWER
TRANSISTOR
NPN SILICON
• Built–In Matching Network for Broadband Operation
• 100% Tested for Load Mismatch at all Phase Angles with 30:1 VSWR
• Gold Metallization System for High Reliability Applications
CASE 333–04, STYLE 1
MAXIMUM RATINGS
Symbol
Value
Unit
Collector–Emitter Voltage
Rating
VCEO
30
Vdc
Collector–Base Voltage
VCBO
60
Vdc
Emitter–Base Voltage
VEBO
4
Vdc
Collector Current — Continuous
Collector Current — Peak
IC
9
12
Adc
Total Device Dissipation @ TC = 25°C (1)
Derate above 25°C
PD
250
1.43
Watts
W/°C
Storage Temperature Range
Tstg
– 65 to +150
°C
Symbol
Max
Unit
RθJC
0.7
°C/W
THERMAL CHARACTERISTICS
Characteristic
Thermal Resistance, Junction to Case (2)
ELECTRICAL CHARACTERISTICS (TC = 25°C unless otherwise noted)
Symbol
Min
Typ
Max
Unit
Collector–Emitter Breakdown Voltage
(IC = 80 mAdc, IB = 0)
V(BR)CEO
30
—
—
Vdc
Collector–Emitter Breakdown Voltage
(IC = 80 mAdc, VBE = 0)
V(BR)CES
60
—
—
Vdc
Emitter–Base Breakdown Voltage
(IE = 8 mAdc, IC = 0)
V(BR)EBO
4
—
—
Vdc
Characteristic
OFF CHARACTERISTICS
(1) This device is designed for RF operation. The total device dissipation rating applies only when the device is operated as an RF amplifier.
(2) Thermal Resistance is determined under specified RF operating conditions by infrared measurement techniques.
REV 2
RF DEVICE DATA
MOTOROLA
Motorola, Inc. 1997
MRF338
1
ELECTRICAL CHARACTERISTICS — continued (TC = 25°C unless otherwise noted)
Characteristic
Symbol
Min
Typ
Max
Unit
V(BR)CBO
60
—
—
Vdc
ICBO
—
—
5
mAdc
hFE
20
—
80
—
Cob
—
95
125
pF
Common–Emitter Amplifier Power Gain
(VCC = 28 Vdc, Pout = 80 W, f = 470 MHz)
GPE
7.3
8.8
—
dB
Collector Efficiency
(VCC = 28 Vdc, Pout = 80 W, f = 470 MHz)
η
50
60
—
%
Load Mismatch
(VCC = 28 Vdc, Pout = 80 W, f = 470 MHz,
VSWR = 30:1, All Phase Angles at Frequency of Test)
ψ
OFF CHARACTERISTICS
Collector–Base Breakdown Voltage
(IC = 80 mAdc, IE = 0)
Collector Cutoff Current
(VCB = 30 Vdc, IE = 0)
ON CHARACTERISTICS
DC Current Gain
(IC = 4 Adc, VCE = 5 Vdc)
DYNAMIC CHARACTERISTICS
Output Capacitance
(VCB = 28 Vdc, IE = 0, f = 1 MHz)
FUNCTIONAL TESTS (Figure 1)
No Degradation in Output Power
RFC1
L4
+
C14
C12
R2
L3
C13
28 V
+
C15
–
L2
C11
C10
R1
Z2
Z3
Z4
DUT
RF
INPUT
RF
OUTPUT
Z1
C6
L1
C1
BEAD
Bead
C1, C2, C8, C9
C3, C4, C6, C7
C5, C10
C11, C13
C12, C14
C15
L1
L2
VCC
C2
C3
C7
C8
C9
C4
C5
Ferroxcube #56–590–65/3B
0.8 – 20 pF, Johanson (JMC 5501)
25 pF, 100 V, Underwood
100 pF, 100 V, Underwood
0.1 µF, Erie Redcap
680 pF, Feedthru
1.0 µF, Tantalum
0.15 µH, Molded Choke
5 Turns #20 AWG, 0.185″ ID, Close Wound
L3
L4
RFC1
R1, R2
Z1
Z2
Z3
Z4
3 Turns #18 AWG, 0.185″ ID, Close Wound
4 Turns #18 AWG, 0.185″ ID, Close Wound
Ferroxcube VK200 19/4B
10 Ω, 2.0 Watt Carbon
0.190″ W x 2.5″ L, Microstrip Lin
0.190″ W x 0.289″ L, Microstrip Line
0.190″ W x 0.55″ L, Microstrip Line
0.190″ W x 0.325″ L, Microstrip Line
Board
Glass Teflon, t = 0.062″, εr = 2.56
Figure 1. 470 MHz Test Circuit
MRF338
2
MOTOROLA RF DEVICE DATA
TYPICAL CHARACTERISTICS
100
100
Pin = 14 W
Pout , OUTPUT POWER (WATTS)
Pout , OUTPUT POWER (WATTS)
f = 470 MHz
512 MHz
80
60
400 MHz
40
20
VCC = 28 Vdc
0
0
4
8
12
16
10 W
40
20
f = 470 MHz
14
16
18
20
22
24
26
Pin, INPUT POWER (WATTS)
VCC, SUPPLY VOLTAGE (V)
Figure 2. Output Power versus Input Power
Figure 3. Output Power versus Supply Voltage
28
100
Pout , OUTPUT POWER (WATTS)
G PE, POWER GAIN (dB)
12 W
60
0
12
20
10
9
8
7
6
5
400
80
VCC = 28 Vdc
Pout = 80 W
425
450
475
500
Pin = 16 W
80
12 W
60
8.0 W
40
20
VCC = 28 Vdc
525
0
400
425
450
475
500
525
f, FREQUENCY (MHz)
f, FREQUENCY (MHz)
Figure 4. Power Gain versus Frequency
Figure 5. Output Power versus Frequency
MOTOROLA RF DEVICE DATA
MRF338
3
512
470
450
512
500
500
ZOL*
f = 400 MHz
Zin
470
450
f = 400 MHz
Zo = ?? Ω
f
MHz
512
500
470
450
400
VCC = 28 V, Pout = 80 W
Zin
ZOL*
Ohms
Ohms
0.91 + j2.61
1.47 + j2.71
1.53 + j2.98
1.27 + j3.09
0.86 + j3.01
1.19 + j1.34
1.33 + j0.96
1.60 + j0.45
1.70 + j0.25
2.58 – j0.79
ZOL* = Conjugate of the optimum load impedance into
which the device output operates at a given output
power, voltage and frequency.
Figure 6. Series Equivalent Input/Output Impedance
MRF338
4
MOTOROLA RF DEVICE DATA
PACKAGE DIMENSIONS
–A–
Q
N
0.13 (0.005)
D
M
T A
3
–B–
P
K
4
F
G
J
N
H
M
B
M
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
DIM
A
B
C
D
E
F
G
H
J
K
L
N
P
Q
K
2
1
2 PL
INCHES
MIN
MAX
0.965
0.985
0.390
0.410
0.250
0.290
0.190
0.210
0.095
0.115
0.215
0.235
0.725 BSC
0.155
0.175
0.004
0.006
0.195
0.205
0.740
0.770
0.415
0.425
0.390
0.400
0.120
0.135
STYLE 1:
PIN 1.
2.
3.
4.
N
C
–T–
MILLIMETERS
MIN
MAX
24.51
25.02
9.91
10.41
6.73
7.36
4.83
5.33
2.42
2.92
5.47
5.96
18.42 BSC
3.94
4.44
0.10
0.15
4.95
5.21
18.80
19.55
10.54
10.80
9.91
10.16
3.05
3.42
EMITTER
COLLECTOR
EMITTER
BASE
SEATING
PLANE
CASE 333–04
ISSUE E
MOTOROLA RF DEVICE DATA
MRF338
5
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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 which may be provided in Motorola
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MRF338
6
◊
MRF338/D
MOTOROLA RF DEVICE
DATA