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.
GHz Technology Inc. 3000 Oakmead Village Drive, Santa Clara, CA 95051-0808 Tel. 408 / 986-8031 Fax 408 / 986-8120
VAM 40
40 Watts, 27 Volts, Class AB
Defcom 100 - 150
MHz
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.
CASE OUTLINE
55HT, Style 2
ABSOLUTE MAXIMUM RATINGS
Maximum Power Dissipation @ 25 C 50 Watts
o
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
Maximum Temperatures
Storage Temperature - 65 to +150 C
o
Operating Junction Temperature +200 C
o
ELECTRICAL CHARACTERISTICS @ 25 C
O
SYMBOL
CHARACTERISTICS
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Pout
Pin
Pg
Pout
Pin
Pg
c
VSWR
Power Output
Power Input
Power Gain
Power Output
Power Input
Power Gain
Efficiency
Load Mismatch Tolerance
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
40
10
10
3.2
11
8.0
65
4.0
2.0
30:1
Watts
Watts
dB
Watts
Watts
dB
%
BVebo
BVces
BVceo
Ices
Cob
h
FE
jc
Emitter to Base Breakdown
Collector to Emitter Breakdown
Collector to Emitter Breakdown
Collector Leakage Current
Output Capacitance
DC - Current Gain
Thermal Resistance
Ie = 5 mA
Ic = 20 mA
Ie = 50 mA
Vce = 5 Volts
Vcb = 28 V, F = 1 MHz
Vce =5 V, Ic = 500 MA
4.0
60
32
10
30
25
100
3.5
Volts
Volts
Volts
mA
pF
C/W
o
Issue August 1996
VAM40
150 MHz TEST AMPLIFIER
C1
C2
L1
L2
C5
L4
C6
C7
L3
C3
C4
Vcc = +28 Volts
C1, C2 .......... 4-40 pf Elmenco type 403
C3, C4 .......... 2-25 pf Elmenco type 402
C5 .............. .001
m
f
C6 .............. .1
m
f
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.
August 1996
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