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VAM 40
40 Watts, 27 Volts, Class AB
Defcom 100 - 150
GENERAL DESCRIPTION
The VAM 40 is a COMMON EMITTER, specifically designed for collector
modulated operation in the VHF AM applications in the 100-150 MHz range.
ABSOLUTE MAXIMUM RATINGS
Maximum Power Dissipation @ 25 C 50 Watts
Maximum Voltage and Current
BVces Collector to Emiter Voltage 60 Volts
BVebo Emitter to Base Voltage 4.0 Volts
Ic Collector Current 5.0 A
Ma ximum Temperat ure s
Storage Temperature - 65 to +150 C
Operating Junction Temperature +200 C
ELECTRICAL CHARACTERISTICS @ 25 C
SYMBOL CHARACTERISTICS TEST CONDITIONS MIN TYP MAX UNITS
o
o
o
O
CASE OUTLINE
55HT, Style 2
MHz
Pout
Pin
Pg
Pout
Pin
Pg
η
c
VSWR
BVebo
BVces
BVceo
Ices
Cob
h
FE
θ
jc
Issue August 1996
GHz TECHNOLOGY INC. RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE. GHz RECOMMENDS THAT
BEFORE THE PRODUCT(S) DESCRIBED HEREIN ARE WRITTEN INTO SPECIFICATIONS, OR USED IN CRITICAL APPLICATIONS,
THAT THE PERFORMANCE CHARACTERISTICS BE VERIFIED BY CONTACTING THE FACTORY.
Power Output
Power Input
Power Gain
Power Output
Power Input
Power Gain
Efficiency
Load Mismatch Tolerance
Emitter to Base Breakdown
Collector to Emitter Breakdown
Collector to Emitter Breakdown
Collector Leakage Current
Output Capacitance
DC - Current Gain
Thermal Resistance
F = 150 MHz
Vcc =27V, 1 KHz, 50%
F = 150 MHz
Vcc = 13.5 Volts
F = 150 MHz, Po=10 W
Vcc = 13.5 Volts
Ie = 5 mA
Ic = 20 mA
Ie = 50 mA
Vce = 5 Volts
Vcb = 28 V, F = 1 MHz
Vce =5 V, Ic = 500 MA
40
3.2
10
10
4.0
60
32
10
11
8.0
65
4.0
2.0
30:1
30
25
100
3.5
Watts
Watts
dB
Watts
Watts
dB
%
Volts
Volts
Volts
mA
pF
o
C/W
GHz Technology Inc. 3000 Oakmead Village Drive, Santa Clara, CA 95051-0808 Tel. 408 / 986-8031 Fax 408 / 986-8120
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VAM40
August 1996
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150 MHz TEST AMPLIFIER
VAM40
C1
C2
L1
L2
C5
L3
L4
C6
Vcc = +28 Volts
C4
C3
C7
August 1996
C1, C2 .......... 4-40 pf Elmenco type 403
C3, C4 .......... 2-25 pf Elmenco type 402
C5 .............. .001 m f
C6 .............. .1mf
C7 ................ 10 m f
L1 ................ 1/2 turn #16, 3/8" I.D.
L2 ................ 1/Ouf RFC
L3 ................ 3 turns #16, 3/8" I.D.
L4 ................ 6 turns #16, 3/8" I.D.
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