HP VTO-8580, VTO-8430, VTO-8360, VTO-8240, VTO-8150 Datasheet

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Varactor-Tuned Oscillators
GROUND
CASE GROUND
+DC VOLTAGE
RF
+V
3
1
24
OUT
TUNE
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
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

Pin Configuration

TO-8V
conventional 50-ohm micro-

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
stripline 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
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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.
5964-9815E

Electrical and Performance Specifications

Guaranteed Specifications @ 25°C Case Temperature (0° to +65° C Operating Temperature)
Part Number VTO–8060 VTO–8080 VTO–8090 VTO–8150 VTO–8200
Frequency Range, Min. 600–1000 MHz 800–1400 MHz 900–1600 MHz 1500–2500 MHz 2000–3000 MHz Power Output into 50–ohm Load,Min. 20 mW/+13 dBm 20 mW/+13 dBm 20 mW/+13 dBm 10 mW/+10 dBm 10 mW/+10 dBm
Power Output Variation @ 25°C, Max. ± 1.5 dB ± 1.5 dB ± 1.5 dB ± 1.5 dB ± 1.5 dB Operating Case Temperature Range 0° to +65° C0° to +65°C0° to +65°C0° to +65°C0° to +65°C
Frequency Drift Over Operating 8 MHz 10 MHz 10 MHz 18 MHz 30 MHz
Temperature, Typ. Pulling Figure (12 dB Return Loss), Typ. 25 MHz 25 MHz 25 MHz 35 MHz 35 MHz Pushing Figure, +15 VDC Supply, Typ. 5 MHz/V 6 MHz/V 6 MHz/V 6 MHz/V 6 MHz/V Harmonics, Below Carrier, Typ. –15 dB –15 dB –15 dB –15 dB –18 dB Spurious Output Below Carrier, Min. –60 dB –60 dB –60 dB –60 dB –60 dB Tuning Voltage
Low Frequency 3±1 VDC 2±1.5 VDC 2± 1 VDC 2.5± 1 VDC 2+2/–1 VDC
High Frequency 40±8 VDC 35± 10 VDC 48+8/–10 VDC 47± 8 VDC 20± 4 VDC
Maximum Tuning Voltage +60 VDC +60 VDC +60 VDC +60 VDC +45 VDC Tuning Port Capacitance, Nom. 180 pF 180 pF 180 pF 90 pF 45 pF Phase Noise, Singie Sideband,
1 Hz Bandwidth, Typ.
50 kHz From Carrier –110 dBc/Hz –100 dBc/Hz –100 dBc/Hz –95 dBc/Hz –95 dBc/Hz 100 kHz From Carrier –117 dBc/Hz –107 dBc/Hz –107 dBc/Hz –102 dBc/Hz –102 dBc/Hz
Input Power ± 1% Regulation
Voltage, Nom. +15 VDC +15 VDC +15 VDC +15 VDC +15 VDC Current, Max. 50 mA 50 mA 50 mA 50 mA 50 mA
Case Style TO–8V TO–8V TO–8V TO–8V TO–8V
Part Number VTO–8240 VTO-8360 VTO–8430 VTO–8580
Frequency Range, Min. 2400–3700 MHz 3600–4300 MHz 4300–5800 MHz 5800–6600 MHz Power Output Into 50–ohm Load, Min. 10 mW/+10 dBm 10 mW/+10 dBm 10 mW/+10 dBm 5 mW/+7 dBm
Power Output Variation @25°C., Max. ± 1.5 dB ± 1.5 dB ± 1.5 dB ± 1.5 dB Operating Case Temperature Range 0° to +65° C0° to +65°C0° to +65°C0° to +65°C
Frequency Drift Over Operating 30 MHz 35 MHz 60 MHz 70 MHz
Temperature, Typ. Pulling Figure (12 dB Return Loss), Typ. 35 MHz 40 MHz 50 MHZ 70 MHz Pushing Figure, +15 VDC Supply, Typ. 6 MHz/V 6 MHz/V 6 MHz/V 8 MHz/V Harmonics, Below Carrier, Typ. –18 dB –25 dB –25 dB –25 dB Spurious Output Below Carrier, Min. –60 dB –60 dB –60 dB –60 dB Tuning Voltage
Low Frequency 2+2/–1 VDC 8± 2 VDC 1.0 VDC Min 5± 2.5 VDC
High Frequency 30±8 VDC 24± 4 VDC 20.0 VDC Max. 24+3/–5 VDC
Maximum Tuning Voltage +45 VDC +30 VDC +30 VDC +30 VDC Tuning Port Capacitance, Nom. 45 pF 45 pF 45 pF 45 pF Phase Noise, Single Sideband,
1 Hz Bandwidth, Typ.
50 kHz From Carrier –95 dBc/Hz –100 dBc/Hz –90 dBc/Hz –85 dBc/Hz 100 kHz From Carrier –102 dBc/Hz –108 dBc/Hz –97 dBc/Hz –92 dBc/Hz
Input Power ± 1% Regulation
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
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Electrical and Performance Specifications

Guaranteed Specifications @ 25°C Case Temperature (0° to +65° C Operating Temperature)
Part Number VTO–8650 VTO–8810 VTO–8850 VTO–8950
Frequency Range, Min. 6500-8600 MHz 8100–9100 MHz 8500–9600 MHz 9500–10500 MHz Power Output Into 50–ohm load, Min. 10 mW/+10 dBm 10 mW/+10 dBm 10 mW/+10 dBm 10 mW/+10 dBm
Power Output Variation @ 25°C., Max. ± 1.5 dB ± 1.5 dB ± 1.5 dB ± 1.5 dB Operating Case Temperature Range 0° to +65°C0° to +65° C0° to +65°C0° to +65°C
Frequency Drift Over Operating 100 MHz 110 MHz 110 MHz 160 MHz
Temperature, Typ. Pulling Figure (12 dB Return Loss), Typ. 15 MHz 8 MHz 10 MHz 20 MHz Pushing Figure, +15 VDC Supply, Typ. 10 MHz/V 12 MHz/V 15 MHz/V 10 MHz/V Harmonics, Below Carrier, Typ. –20 dB –15 dB –25 dB –20 dB Spurious Output Below Carrier, Min. –60 dB –60 dB –60 dB –60 dB Tuning Voltage
Low Frequency 2± 1 VDC 2 VDC Min. 5±2 VDC 4± 1 VDC
High Frequency 20±5 VDC 16 VDC Max. 13±5 VDC 10 VDC Max.
Maximum Tuning Voltage 30 VDC +30 VDC +30 VDC +15 VDC Tuning Port Capacitance, Nom. 26 pF 26 pF 26 pF 26 pF Phase Noise, Single Sideband,
1 Hz Bandwldth, Typ.
50 kHz From Carrier –80 dBc/Hz –80 dBc/Hz –82 dBc/Hz –73 dBc/Hz
100 kHz From Carrier –88 dBc/Hz –88 dBc/Hz –90 dBc/Hz –80 dBc/Hz
Input Power ± 1% Regulation
Voltage, Nom. +15 VDC +15 VDC +15 VDC +15 VDC
Current, Max. 50 mA 100 mA 100 mA 100 mA Case Style TO–8V TO–8V TO–8V TO–8V

Schematic

Series Feedback
V Tune
Tuning
Port
Capacitor
+15 V
RF OutputOutput Matching
Varactor
Resonator
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