H
Varactor-Tuned Oscillators
Technical Data
VTO-8000 Series
Features
• 600 MHz to 10.5 GHz
Coverage
• Fast Tuning
• +7 to +13 dBm Output
Power
• ±1.5 dB Output Flatness
• Hermetic Thin-film
Construction
Description
HP VTO-8000 Series oscillators
use a silicon transistor chip as a
negative resistance oscillator. The
oscillation frequency is determined by a silicon abrupt 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. Fast settling is
another feature of the HP
VTO-8000 Series oscillators.
Typical settling times for the
VTO-8090 are <200 kHz within one
microsecond while the VTO-8950
settles to <2 MHz within two
microseconds referenced to ten
milliseconds. The VTO-8850
combines a bipolar transistor
oscillator with a GaAs FET buffer
stage. This GaAs FET buffer
isolates the oscillator from
variations in load impedance for
low frequency pulling, allows the
oscillator to run lighty-loaded for
low phase noise content and
provides +10 dBm of minimum
output power over the full tuning
range. The VTO-8000 Series
varactor-tuned oscillators 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
Frequency agile systems, such as
digitally controlled receivers and
active jamming transmitters often
use externally linearized
varactor-tuned oscillators. HP
oscillators are monotonic making
external linearization easy using
analog (opamp) or digital
(EPROM) linearizing techniques.
The HP VTO Series has been
designed with a tuning input
bypass capacitance which is
sufficient to provide the necessary RF filtering action yet as low
Pin Configuration
TO-8V
GROUND
+V
3
TUNE
2
RFOUT
4
1
+DC
VOLTAGE
CASE GROUND
as possible to maximize ∆V/∆T
characteristics for excellent
tuning speeds. Used in a phase
locked loop PLL circuit, a VTO
provides a receiver LO with
stability equivalent to the reference oscillator (usually crystal
controlled), yet variable in
discrete steps or continuously
depending on the PLL
configuration.
Another important aspect of VTOs
used in an LO application is their
power vs. frequency flatness
(±1.5 dB). This assures that once a
receiver mixer is biased for best
dynamic range the local oscillator
drive will remain constant
throughout the tuning range
without complex leveling
circuitry.
2
Electrical and Performance Specifications
Guaranteed Specifications @ 25°C Case Temperature (0° to +65°C Operating Temperature)
Part Number
Frequency Range, Min.
Power Output into 50–ohm Load,Min.
Power Output Variation @ 25°C, Max.
Operating Case Temperature Range
Frequency Drift Over Operating
Temperature, Typ.
Pulling Figure (12 dB Return Loss), Typ.
Pushing Figure, +15 VDC Supply, Typ.
Harmonics, Below Carrier, Typ.
Spurious Output Below Carrier, Min.
Tuning Voltage
Low Frequency
High Frequency
Maximum Tuning Voltage
Tuning Port Capacitance, Nom.
Phase Noise, Singie Sideband,
1 Hz Bandwidth, Typ.
50 kHz From Carrier
100 kHz From Carrier
Input Power ±1% Regulation
Voltage, Nom.
Current, Max.
Case Style
Part Number
Frequency Range, Min.
Power Output Into 50–ohm Load, Min.
Power Output Variation @25°C., Max.
Operating Case Temperature Range
Frequency Drift Over Operating
Temperature, Typ.
Pulling Figure (12 dB Return Loss), Typ.
Pushing Figure, +15 VDC Supply, Typ.
Harmonics, Below Carrier, Typ.
Spurious Output Below Carrier, Min.
Tuning Voltage
Low Frequency
High Frequency
Maximum Tuning Voltage
Tuning Port Capacitance, Nom.
Phase Noise, Single Sideband,
1 Hz Bandwidth, Typ.
50 kHz From Carrier
100 kHz From Carrier
Input Power ±1% Regulation
Voltage, Nom.
Current, Max.
Case Style
VTO–8060
VTO–8080
600–1000 MHz
800–1400 MHz
20 mW/+13 dBm 20 mW/+13 dBm
±1.5 dB
±1.5 dB
0° to +65°C
0° to +65°C
8 MHz
10 MHz
VTO–8090
VTO–8150
900–1600 MHz
20 mW/+13 dBm
±1.5 dB
0° to +65°C
10 MHz
VTO–8200
1500–2500 MHz 2000–3000 MHz
10 mW/+10 dBm 10 mW/+10 dBm
±1.5 dB
±1.5 dB
0° to +65°C
0° to +65°C
18 MHz
30 MHz
25 MHz
5 MHz/V
–15 dB
–60 dB
25 MHz
6 MHz/V
–15 dB
–60 dB
25 MHz
6 MHz/V
–15 dB
–60 dB
35 MHz
6 MHz/V
–15 dB
–60 dB
35 MHz
6 MHz/V
–18 dB
–60 dB
3±1 VDC
40±8 VDC
+60 VDC
180 pF
2±1.5 VDC
35±10 VDC
+60 VDC
180 pF
2±1 VDC
48+8/–10 VDC
+60 VDC
180 pF
2.5±1 VDC
47±8 VDC
+60 VDC
90 pF
2+2/–1 VDC
20±4 VDC
+45 VDC
45 pF
–110 dBc/Hz
–117 dBc/Hz
–100 dBc/Hz
–107 dBc/Hz
–100 dBc/Hz
–107 dBc/Hz
–95 dBc/Hz
–102 dBc/Hz
–95 dBc/Hz
–102 dBc/Hz
+15 VDC
50 mA
TO–8V
+15 VDC
50 mA
TO–8V
+15 VDC
50 mA
TO–8V
+15 VDC
50 mA
TO–8V
+15 VDC
50 mA
TO–8V
VTO–8240
VTO-8360
VTO–8430
VTO–8580
2400–3700 MHz
10 mW/+10 dBm
±1.5 dB
0° to +65°C
30 MHz
3600–4300 MHz
10 mW/+10 dBm
±1.5 dB
0° to +65°C
35 MHz
4300–5800 MHz
10 mW/+10 dBm
±1.5 dB
0° to +65°C
60 MHz
5800–6600 MHz
5 mW/+7 dBm
±1.5 dB
0° to +65°C
70 MHz
35 MHz
6 MHz/V
–18 dB
–60 dB
40 MHz
6 MHz/V
–25 dB
–60 dB
50 MHZ
6 MHz/V
–25 dB
–60 dB
70 MHz
8 MHz/V
–25 dB
–60 dB
2+2/–1 VDC
30±8 VDC
+45 VDC
45 pF
8±2 VDC
24±4 VDC
+30 VDC
45 pF
1.0 VDC Min
20.0 VDC Max.
+30 VDC
45 pF
5±2.5 VDC
24+3/–5 VDC
+30 VDC
45 pF
–95 dBc/Hz
–102 dBc/Hz
–100 dBc/Hz
–108 dBc/Hz
–90 dBc/Hz
–97 dBc/Hz
–85 dBc/Hz
–92 dBc/Hz
+15 VDC
50 mA
TO–8V
+15 VDC
50 mA
TO–8V
+15 VDC
50 mA
TO–8V
+15 VDC
50 mA
TO–8V
3
Electrical and Performance Specifications
Guaranteed Specifications @ 25°C Case Temperature (0° to +65°C Operating Temperature)
Part Number
Frequency Range, Min.
Power Output Into 50–ohm load, Min.
Power Output Variation @ 25°C., Max.
Operating Case Temperature Range
Frequency Drift Over Operating
Temperature, Typ.
Pulling Figure (12 dB Return Loss), Typ.
Pushing Figure, +15 VDC Supply, Typ.
Harmonics, Below Carrier, Typ.
Spurious Output Below Carrier, Min.
Tuning Voltage
Low Frequency
High Frequency
Maximum Tuning Voltage
Tuning Port Capacitance, Nom.
Phase Noise, Single Sideband,
1 Hz Bandwldth, Typ.
50 kHz From Carrier
100 kHz From Carrier
Input Power ±1% Regulation
Voltage, Nom.
Current, Max.
Case Style
VTO–8650
VTO–8810
VTO–8850
VTO–8950
6500-8600 MHz
10 mW/+10 dBm
±1.5 dB
0° to +65°C
100 MHz
8100–9100 MHz
10 mW/+10 dBm
±1.5 dB
0° to +65°C
110 MHz
8500–9600 MHz
10 mW/+10 dBm
±1.5 dB
0° to +65°C
110 MHz
9500–10500 MHz
10 mW/+10 dBm
±1.5 dB
0° to +65°C
160 MHz
15 MHz
10 MHz/V
–20 dB
–60 dB
8 MHz
12 MHz/V
–15 dB
–60 dB
10 MHz
15 MHz/V
–25 dB
–60 dB
20 MHz
10 MHz/V
–20 dB
–60 dB
2±1 VDC
20±5 VDC
30 VDC
26 pF
2 VDC Min.
16 VDC Max.
+30 VDC
26 pF
5±2 VDC
13±5 VDC
+30 VDC
26 pF
4±1 VDC
10 VDC Max.
+15 VDC
26 pF
–80 dBc/Hz
–88 dBc/Hz
–80 dBc/Hz
–88 dBc/Hz
–82 dBc/Hz
–90 dBc/Hz
–73 dBc/Hz
–80 dBc/Hz
+15 VDC
50 mA
TO–8V
+15 VDC
100 mA
TO–8V
+15 VDC
100 mA
TO–8V
+15 VDC
100 mA
TO–8V
Schematic
+15 V
Output Matching
Series Feedback
Varactor
V Tune
Tuning
Port
Capacitor
Resonator
RF Output
4
5
10 15 20 25 30 35 40
TUNING VOLTAGE, VDC
0
5
10
15 20
25 30
35 40
8
16
24
32
40
TUNING VOLTAGE, VDC
POWER
OUTPUT, dBm
15
14
13
180
160
TUNING CURVE 140
120
100
80
60
MODULATION
40
SENSITIVITY
20
2.5
2.0
1.5
0
45 50
5
10 15 20
POWER
OUTPUT, dBm
250
TUNING CURVE
2500
MODULATION
SENSITIVITY
1500
0
8
16
24
32
45 50
Figure 4. VTO–8150 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
40
50
48
TUNING VOLTAGE, VDC
Figure 5. VTO–8200 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
FREQUENCY,
GHz
3500
MODULATION
SENSITIVITY, MHz/V
POWER
OUTPUT, dBm
FREQUENCY,
MHz
POWER OUTPUT
2000
25 30 35 40
TUNING VOLTAGE, VDC
Figure 3. VTO–8090 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
3000
48
POWER OUTPUT
TUNING VOLTAGE, VDC
14
13
12
11
10
25
Figure 2. VTO–8080 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
FREQUENCY,
GHz
MODULATION
SENSITIVITY
MODULATION
SENSITIVITY, MHz/V
POWER
OUTPUT, dBm
FREQUENCY,
GHz
100
90
80
70
60
50
40
30
20
10
TUNING CURVE
0
MODULATION
SENSITIVITY
500
MODULATION
SENSITIVITY, MHz/V
POWER
OUTPUT, dBm
TUNING CURVE
1000
45 50
POWER OUTPUT
1.6
1.5
1.4
1.3
1.2
1.1
1.0
.9
.8
125
1500
Figure 1. VTO–8060 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
15
14
13
POWER OUTPUT
14
13
12
11
POWER OUTPUT
TUNING CURVE
4.0
3.5
160
120
3.0
80
MODULATION
SENSITIVITY
2.5
0
5
10
15 20
25 30
35 40
40
45 50
MODULATION
SENSITIVITY, MHz/V
0
15
14
13
12
11
MODULATION
SENSITIVITY, MHz/V
160
140
120
TUNING CURVE 100
80
60
MODULATION
40
SENSITIVITY
20
FREQUENCY,
MHz
1.1
1.0
.9
.8
.7
.6
.5
POWER OUTPUT
MODULATION
SENSITIVITY, MHz/V
POWER
OUTPUT, dBm
17
16
15
14
FREQUENCY,
GHz
Typical Performance @ 25ºC Case Temperature
TUNING VOLTAGE, VDC
Figure 6. VTO–8240 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
5
20
10
15
20
25
1000
6500
TUNING CURVE
5500
4500
MODULATION
SENSITIVITY
3500
0
30
8
TUNING VOLTAGE, VDC
5.5
0
POWER
OUTPUT, dBm
140
TUNING CURVE 120
100
80
MODULATION
60
SENSITIVITY
40
20
0
5
10
15
20
25
TUNING VOLTAGE, VDC
600
MODULATION
SENSITIVITY
5
0
4
8
12
16
TUNING VOLTAGE, VDC
200
0
20
1000
TUNING CURVE
800
600
7
6
400
MODULATION
SENSITIVITY
5
4
POWER
OUTPUT, dBm
POWER
OUTPUT, dBm
FREQUENCY,
GHz
TUNING CURVE
MODULATION
SENSITIVITY, MHz/V
1000
10
7
6
48
2
4
200
0
6 8 10 12 14 16 18 20 22
TUNING VOLTAGE, VDC
Figure 10. VTO–8650 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
POWER OUTPUT
9
8
40
POWER OUTPUT
0
Figure 9. VTO–8580 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
15
14
13
14
13
12
11
10
8
FREQUENCY,
GHz
6.0
32
Figure 8. VTO–8430 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
Figure 11. VTO–8810 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
FREQUENCY,
GHz
FREQUENCY,
GHz
7.0
MODULATION
SENSITIVITY, MHz/V
POWER
OUTPUT, dBm
POWER OUTPUT
6.5
24
TUNING VOLTAGE, VDC
Figure 7. VTO–8360 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
13
12
11
10
16
200
MODULATION
SENSITIVITY, MHz/V
10
POWER OUTPUT
15
14
13
POWER OUTPUT
TUNING CURVE
10
400
9
MODULATION
SENSITIVITY
8
0
5
10
15 20
25 30
35 40
300
200
100
0
45 50
MODULATION
SENSITIVITY, MHz/V
5
13
12
11
10
9
MODULATION
SENSITIVITY, MHz/V
90
TUNING CURVE 80
70
60
MODULATION 50
40
SENSITIVITY
30
POWER
OUTPUT, dBm
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6
3.5
MODULATION
SENSITIVITY, MHz/V
POWER OUTPUT
FREQUENCY,
MHz
11.5
11.0
10.5
FREQUENCY,
GHz
POWER
OUTPUT, dBm
Typical Performance (Continued)
TUNING VOLTAGE, VDC
Figure 12. VTO–8850 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
6
POWER OUTPUT
800
12
FREQUENCY,
GHz
LOG £(f), dBc/Hz
–20
13
12
11
10
11
TUNING CURVE
10
600
400
MODULATION
SENSITIVITY
9
200
8
0
2
4
6
8
10 12
TUNING VOLTAGE, VDC
14
0
16
MODULATION
SENSITIVITY, MHz/V
POWER
OUTPUT, dBm
Typical Performance (Continued)
8650
8240
–40
–60
–80
–100
–120
–140
–160
8950
10k
100k
1M
1k
FOURIER FREQUENCY, Hz
Figure 14. Noise Comparison Single Sideband
Phase Noise.
Figure 13. VTO–8950 Power Output, Frequency
and Modulation Sensitivity vs. Tuning Voltage.
TO-8V Case Drawing
.300
TYP
.18
.150
TYP
.017 +.002
–.001
GROUND
RF OUT
3
.50
DIA
2
.300
TYP
.45
DIA
4
.150
TYP
GLASS RING
.060 DIA TYP
(3X)
1
CASE
GROUND
.22
MIN
10M
V TUNE
V+
APPROXIMATE WEIGHT 1.7 GRAMS
NOTES (UNLESS OTHERWISE SPECIFIED):
1. DIMENSIONS ARE SPECIFIED IN INCHES
2. TOLERANCES:
xx ± .02
xxx ± .010
7
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
clamp is placed over the device
under test and secured by machine screws prior to testing.
Orientation of pins can be verified
by comparison with part (c) of
Figure 15. 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.
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 15, and
pushed fully down onto the
fixture. The steel mounting ring
TUNING VOLTAGE
CONNECTOR
.53
It should be noted that some
output power variation may be
seen, from unit data, at frequencies above 8 GHz. This is
due to small differences in lengths
of test fixture RF output
connector pins.
TUNING VOLTAGE
.35
POWER INPUT
CONNECTOR
VTO IN
PLACE
For different connector options
check the table in Figure 15 to
identify the correct part numbers.
+ TUNING
VOLTAGE
PIN
.83
DCPIN
VDC
.35
.45
GROUND
.20
.55
.65
(a)
GROUND
.35
RFOUT
.15
RFOUT
.70
(b)
(c)
+ TUNING
VOLTAGE
CONNECTOR OPTIONS
.150
TYP
.300
TYP
GROUND
3
SERIES
TUNING
VOLTAGE
RF
OUTPUT
TF-801
SMA
SMA
TF-802
SMA
TYPE N
Figure 15. TO-8 Test Fixture.
GROUND
TAB ON PACKAGE
2
.45
CASE
GROUND
4
1
RFOUT
.150
TYP
+DC VOLTAGE
(Bottom View)
H
For technical assistance or the location of
your nearest Hewlett-Packard sales office,
distributor or representative call:
Americas/Canada: 1-800-235-0312 or
408-654-8675
Far East/Australasia: (65) 290-6305
Japan: (81 3) 3331-6111
Europe: Call your local HP sales office
listed in your telephone directory. Ask for
a Components representative.
Data subject to change.
Copyright © 1996 Hewlett-Packard Co.
Obsoletes 5963-3264E
Printed in U.S.A.
5964-9815E (3/96)