9-30
Hyperabrupt Varactor-Tuned
Oscillators
Technical Data
VTO-9000 Series
Pin Configuration
TO-8V
Features
• 25 MHz to 2.3 GHz Coverage
• Fast Tuning
• Fast Setting Time
• +20 VDC Max Tuning
Voltage
• 10 mW Output Power
•±2.0 dB Output Flatness
• Hermetic Thin-film
Construction
GROUND
CASE GROUND
+DC
VOLTAGE
RF OUT
+V 3
1
24
TUNE
Description
HP VTO-9000 Hyperabrupt Series
oscillators use a silicon transistor
chip as a negative resistance
oscillator. The oscillation fre-
quency is determined by a silicon
hyperabrupt varactor diode acting
as a voltage-variable capacitor in a
thin-film microstripline resonator.
This provides extremely fast
tuning speed limited primarily by
the internal impedance of the
user-supplied voltage driver.
This family of oscillators is
similar to the standard commer-
cial VTO-8000 Series except for
the incorporation of a silicon
hyperabrupt varactor tuning
diode. This enables the oscillator
to be tuned over the specified
range in less than 20 volts rather
than 40 to 50␣ volts in conven-
tional oscillators.
The VTO-9000 Series VTOs are
packaged in TO-8 transistor cans
for simple installation in a
conventional 50-ohm
microstripline PC board. They
are ideal for most compact
lightweight commercial and
military equipment designs.
Test fixturing is also available for
lab bench test applications. See
the “Test Fixtures for TO-8
Packages” section for additional
information and outlines.
Applications
The VTO-9000 Series oscillators
may be used in the same applica-
tions as VTO-8000 Series oscilla-
tors. The VTO-9000 Series is the
desired choice for superior
linearity and modulation sensitiv-
ity requirements.
Schematic
RF OutputOutput Matching
+15 V
Resonator
Series Feedback
Tuning
Port
Capacitor
V Tune Varactor
5964-9814E
9-31
Electrical and Performance Specifications
Guaranteed Specifications @ 25°C Case Temperature (0° to +65°C Operating Temperature)
Model No. VTO–9032 VTO–9050 VTO–9068 VTO–9090
Frequency Range, Min. 320–640 MHz 500–1000 MHz 680–1360 MHz, 900–1600 MHz
Power Output Into 50–ohm Load, Min . 10 mW/+10 dBm 10 mW/+ 10 dBm 10 mW/+10 d Bm 10 mW/+10 dBm
Power Output Variation @ 25°C, Max. ±2 dB ±2 dB ±2 dB ±2 dB
Operating Carrier Temperature Range 0° to +65°C0° to +65°C0° to +65°C0° to +65°C
Frequency Drift Over Operating Temperature, Typ. 12 MHz 20 MHz 20 MHz 20 MHz
Pulling Figure (12 dB Return Loss), Typ. 20 MHz 20 MHz 25 MHz 25 MHz
Pushing Figure, +15 VDC Supply, Typ. 5 MHz/V 5 MHz/V 6 MHz/V 6 MHz/V
Harmonics, Below Carrier, Typ. –14 dB –10 dB –14 dB –14 dB
Spurious Output Below Carrier, Min. –60 dB –60 dB –60 dB –60 dB
Tuning Voltage
Low Frequency, Min. 0 VDC 0 VDC 0 VDC 2 VDC
High Frequency, Max 20 VDC 20 VDC 20 VDC 18 VDC
Maximum Tuning Voltage +20 VDC +20 VDC +20 VDC +20 VDC
Tuning Port Capacitance, Nom. 200 pF 200 pF 190 pF 190 pF
Phase Noise, Single Sideband,
1 Hz Bandwidth, Typ.
50 kHz From Carrier –95 dBc/Hz –100 dBc/Hz –95 dBc/Hz –100 dBc/Hz
100 kHz From Carrier –103 dBc/Hz –108 dBc/Hz –103 dBc/Hz –108 dBc/Hz
Input Power, ±1% Regulaltion
Voltage, Nom. +15 VDC +15 VDC +15 VDC +15 VDC
Current, Max. 50 mA 50 mA 50 mA 50 mA
Case Style TO–8V TO–8V TO–8V TO–8V
Electrical and Performance Specifications
Guaranteed Specifications @ 25°C Case Temperature (0° to +65°C Operating Temperature)
Model No. VTO–9120 VTO–9130
Frequency Range, Min. 1200–2000 MHz 1300–2300 MHz
Power Output Into 50–ohm load, Min. 10 mW/+10 dBm 10 mW/+10 dBm
Power Output Variation @ 25°C, Max. ±2 dB ±1.5 dB
Operating Case Temperature Range 0° to +65°C0° to +65°C
Frequency Drift Over Operating Temperature, Typ. 25 MHz 25 MHz
Pulling Figure (12 dB Return Loss), Typ. 25 MHz 50 MHz
Pushing Figure, +15 VDC Supply, Typ. 10 MHz/V 10 MHz/V
Harmonics, Below Carrier, Typ. –14 dB –15 dB
Spurious Output Below Carrier, Min. –60 dB –60 dB
Tuning Voltage
Low Frequency 3±1 VDC 2 VDC Min.
High Frequency 12±2 VDC 20 VDC Max.
Maximum Tuning Voltage +20 VDC + 20 VDC
Tuning Port Capacitance, Nom. 100 pF 100 pF
Phase Noise, Single Sideband,
1 Hz, Bandwidth, Typ.
50 kHz From Carrier –97 dBc/Hz –97 dBc/Hz
100 kHz From Carrier –105 dBc/Hz –105 dBc/Hz
Input Power, ±1% Regulation
Voltage,Nom. +15VDC +15VDC
Current, Max. 50 mA 50 mA
Case Style TO–8V TO–8V
9-32
Typical Performance @ 25ºC Case Temperature
LOG £(f), dBc/Hz
–40
1K 10K 100K 1M 10M
FOURIER FREQUENCY, Hz
FOURIER FREQUENCY, Hz
FOURIER FREQUENCY, Hz
Figure 2. VTO-9032 Normalized Phase Noise
@ 640 MHz S.S.B. Power Spectral Density.
–60
–80
–100
–120
–140
–160
LOG £(f), dBc/Hz
–40
1K 10K 100K 1M 10M
Figure 4. VTO-9050 Normalized Phase Noise
@ 1000 MHz S.S.B. Power Spectral Density.
–60
–80
–100
–120
–140
–160
LOG £(f), dBc/Hz
–40
1K 10K 100K 1M 10M
Figure 6. VTO-9068 Normalized Phase Noise
@ 1360 MHz S.S.B. Power Spectral Density.
–60
–80
–100
–120
–140
–160
17
0
Figure 1. VTO-9032 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage
15
11
500
0
1000
13
5 10152025
0
100
16
0
Figure 3. VTO-9050 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
14
10
500
0
1500
12
2468 20
0
100
1000
10 12 14 16 18
11
0
Figure 5. VTO-9068 Power Output, Frequency and
Modulation Sensitivity vs. Tuning Voltage.
10
8
962
786
1374
9
2468 20
20
40
1178
10 12 14 16 18
7
590
22
60
80
100
FREQUENCY,
MHz
TUNING VOLTAGE, VDC
POWER
OUTPUT, dBm
MODULATION
SENSITIVITY, MHz/V
POWER OUTPUT
TUNING CURVE
MODULATION
SENSITIVITY
FREQUENCY,
MHz
TUNING VOLTAGE, VDC
POWER
OUTPUT, dBm
MODULATION
SENSITIVITY, MHz/V
POWER OUTPUT
TUNING CURVE
MODULATION
SENSITIVITY
FREQUENCY,
MHz
TUNING VOLTAGE, VDC
POWER
OUTPUT, dBm
MODULATION
SENSITIVITY, MHz/V
POWER OUTPUT
TUNING CURVE
MODULATION
SENSITIVITY
9-33
Typical Performance @ 25ºC Case Temperature (continued)
LOG £(f), dBc/Hz
–20
1K 10K 100K 1M 10M
Figure 8. VTO-9090 Noise @ 1000 MHz
Single Sideband Phase Noise.
–40
–60
–80
–100
–120
–140
LOG £(f), dBc/Hz
–40
1K 10K 100K 1M 10M
Figure 10. VTO-9120 Normalized Phase Noise
@ 2000 MHz S.S.B. Power Spectral Density.
–60
–80
–100
–120
–140
–160
LOG £(f), dBc/Hz
–40
1K 10K 100K 1M 10M
Figure 12. VTO-9130 Normalized Phase Noise
@ 2300 MHz S.S.B. Power Spectral Density.
–60
–80
–100
–120
–140
–160
17
0
Figure 7. VTO-9090 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
16
14
1435
0
1670
15
2468 22
0
250
16
0
Figure 9. VTO-9120 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
14
10
1500
1000
2500
12
520
0
100
2000
10 15
16
Figure 11. VTO-9130 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
14
12
2000
1500
3000
0
2500
10
1000
100
200
13
12
11
1206
974
742
10 12 14 16 18 20
200
150
100
50
–160
05 2010 15
FOURIER FREQUENCY, Hz
FOURIER FREQUENCY, Hz
FOURIER FREQUENCY, Hz
FREQUENCY,
MHz
TUNING VOLTAGE, VDC
POWER
OUTPUT, dBm
MODULATION
SENSITIVITY, MHz/V
POWER OUTPUT
TUNING CURVE
MODULATION
SENSITIVITY
FREQUENCY,
MHz
TUNING VOLTAGE, VDC
POWER
OUTPUT, dBm
MODULATION
SENSITIVITY, MHz/V
POWER OUTPUT
TUNING CURVE
MODULATION
SENSITIVITY
FREQUENCY,
MHz
TUNING VOLTAGE, VDC
POWER
OUTPUT, dBm
MODULATION
SENSITIVITY, MHz/V
POWER OUTPUT
TUNING CURVE
MODULATION
SENSITIVITY
9-34
TO-8V Case Drawing
.50
DIA .45
DIA
.20
0.22
MIN
.150
TYP
.300
TYP GROUND
CASE
GROUND
V
.150
TYP
RF OUT
3
4
2
1
APPROXIMATE WEIGHT 1.7 GRAMS
+
.300
TYP
VTUNE
.017 +.002
–.001
GLASS RING
.060 DIA TYP
(3X)
NOTES (UNLESS OTHERWISE SPECIFIED):
1. DIMENSIONS ARE SPECIFIED IN INCHES
2. TOLERANCES: xx ± .02
xxx ± .010
Test Fixtures for
TO-8␣ Packages
(TF 801/802)
Oscillators (VTO)
Features
• DC to 11 GHz Frequency
Range
• Connectorized Tuning Port
and RF Output
• Easy to Test Package
• Repeatable Performance
Applications
• Engineering
Characterization
• Incoming Inspection
• System Prototype
• Demonstration of Device
Performance
Description
To facilitate testing and
prototyping of products in the
TO-8V package, a series of test
fixtures is available. Designated
the HP TF Series test fixtures,
they feature rugged construction
for precise, repeatable
measurements.
The TF Series test fixtures come
supplied with mounting hardware
to ensure excellent ground
contact between the oscillator
package and test fixture. This
assures excellent contact between
package pins and test fixture
connector pins for reliable testing.
The device under test is aligned
according to Figure 13, and
pushed fully down onto the
fixture. The steel mounting ring
clamp is placed over the device
under test and secured by ma-
chine screws prior to testing.
Orientation of pins can be verified
by comparison with part (c) of
Figure 13. It is recommended that
both machine screws be used to
fasten the ring clamp. Screws
should be tightened down snugly
with a jewelers type screwdriver.
For different connector options
check the table in Figure 13 to
identify the correct part numbers.
It should be noted that some
output power variation may be
seen, from unit data, at frequen-
cies above 8 GHz. This is
due to small differences in lengths
of test fixture RF output
connector pins.
9-35
Figure 13. TO-8 Test Fixture.
GROUND
TUNING VOLTAGE
.150
TYP
.300
TYP
CASE
GROUND
.150
TYP
RF
OUT
34
21
.45
+ TUNING
VOLTAGE
+DC VOLTAGE
(Bottom View)
GROUND
RF
OUT
(c)
+ TUNING
VOLTAGE
PIN
GROUND TAB ON PACKAGE
V
DC
DC
PIN
TUNING VOLTAGE
CONNECTOR
POWER INPUT
CONNECTOR
.35
.35
.35
.70
(b)(a)
.15
.45
.83
.55
VTO IN
PLACE
RF
OUT
GROUND
.53
.65
.20
CONNECTOR OPTIONS
SERIES
TF-801
TF-802
TUNING
VOLTAGE
SMA
SMA
RF
OUTPUT
SMA
TYPE N
