ETC VTV075

VTV075
7.5 Watts, 25 Volts, Class A
VHF Television - Band III
GENERAL DESCRIPTION
CASE OUTLINE
55HV, STYLE 2
The VTV 075 is a COMMON EMITTER transistor capable of providing 7.5
Watts Peak Sync, Class A, RF Output Power over the band 175 - 225 MHz. It
is designed for high efficiency, high linereity, Class A operation. Gold
Metalization and Diffused Ballasting are used to provide high reliability and
supreme ruggedness.
ABSOLUTE MAXIMUM RATINGS
Maximum Power Dissipation @ 25oC
53 Watts
Maximum Voltage and Current
BVces
Collector to Emitter Voltage
BVceo Collector to Emitter Voltage
BVebo Emitter to Base Voltage
Ic
Collector Current
45 Volts
25 Volts
4.0 Volts
4.0 Amps
Maximum Temperatures
Storage Temperature
Operating Junction Temperature
- 65 to + 150oC
+ 200oC
ELECTRICAL CHARACTERISTICS @ 25 OC
SYMBOL
CHARACTERISTICS
TEST CONDITIONS
Pout
Pin
Pg
η
IMD
VSWR
Power Out - Pk Sync1
Power Input
Power Gain
Efficiency
Intermodulation Distortion
Load Mismatch Tolerance
F = 175-225 MHz
Vcc = 25 Volts
Ic = 1.2Amps
BVceo
BVces
BVebo
hFE
Cob
θjc
Collector to Emitter Breakdown
Collector to Base Breakdown
Emitter to Base Breakdown
Current Gain
Output Capacitance
Thermal Resistance
Pref = 7.5 Watts
F = 225 MHz
Ic = 25mA
Ic = 50 mA
Ie = 10 mA
Vce = 5 V, 500 mA
Vcb = 25 V, F = 1MHz
Tc = 25oC, IR Scan
MIN
TYP
7.5
10
10
11.2
33
- 52
MAX
UNITS
Watts
Watts
dB
%
dB
5:1
28
45
4.0
10
Volts
Volts
Volts
35
3.0
3.3
pF
C/W
o
Note 1: European three tone test method: Vision carrier -8dB, sound carrier -7dB, sideband signal -16 dB, 0 dB
corresponds to peak sync level.
Issue October 1997
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
VTV 075
August 1996
VTV-075
VTV-075 RF Test Circuit (Tunable 175-225 MHz)
Recommended Bias: VCE=25 V, IC=1.2 A (DC Bias not shown)
R2
R1
Vcc
vbb
L6
L3
C10
C11
C12
C14
C13
.83"
L1
C1
C2
.94"
.30"
C3
C1, C9, C13, C14 ........ 470pF ceramic chip
C2, C3, C8 ................... 5-70pF compressed mica
C4 ................................. 75pF ceramic chip
C5 ................................. 82pF ceramic chip
C6 ................................. 2-20pF air tuned
C7 ................................ 25-240pF compressed mica
C10, C17 ..................... 50 mF electrolytic
C11, C16 ..................... 1mF electolytic
C12, C15 .................... 1000pF ceramic chip
August 1996
C16
C17
L5
L4
.56"
C15
.51"
.34"
Q1
C4
C5
C6
C7
L2
.32"
C8
L1 ................... Cu strap, 1.20" X .12" X .03"
L2 ................... Cu strap, 1.05" X .12" X .04"
L3, L6 .............. 10 turns #22 wire on F627-8Q1
L4 ................... 4.7 m H
L5 ................... 7 turns #22 wire (.15" outer diameter)
R1, R2 ..............15 Ohm 1/2 Watt Carbon
BOARD MATERIAL is 1/16" Teflon glass,
2 oz. Cu microstriplines are 50W nominal.
C9