Varactor-Tuned Oscillators Technical Data VTO-8000 Series Features * 600 MHz to 10.85 GHz Coverage * Fast Tuning * +7 to +13 dBm Output Power * 1.5 dB Output Flatness * Hermetic Thin-film Construction Description Agilent Technologies's 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 Agilent 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. Agilent oscillators are monotonic making external linearization easy using analog (opamp) or digital (EPROM) linearizing techniques. The Agilent VTO Series has been designed with a tuning input bypass capacitance which is sufficient to provide the Pin Configuration TO-8V GROUND +V 3 TUNE RF OUT 2 4 1 +DC VOLTAGE CASE GROUND necessary RF filtering action yet as low 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 @ 25C Case Temperature (0 to +65C Operating Temperature) Part Number Frequency Range, Min. Power Output into 50-ohm Load,Min. Power Output Variation @ 25C, 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 @25C., 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 * +5 VDC supply 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 +65C 0 to +65C 8 MHz 10 MHz VTO-8090 900-1600 MHz 20 mW/+13 dBm 1.5 dB 0 to +65C 10 MHz VTO-8150 VTO-8200 1500-2500 MHz 2000-3000 MHz 10 mW/+10 dBm 10 mW/+10 dBm 1.5 dB 1.5 dB 0 to +65C 0 to +65C 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 31 VDC 408 VDC +60 VDC 180 pF 21.5 VDC 3510 VDC +60 VDC 180 pF 21 VDC 48+8/-10 VDC +60 VDC 180 pF 2.51 VDC 478 VDC +60 VDC 90 pF 2+2/-1 VDC 204 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-8248 VTO-8360 VTO-8430 VTO-8580 2400-3700 MHz 10 mW/+10 dBm 1.5 dB 0 to +65C 30 MHz 2488 MHz +8 dBm N/A 0 to +65C 10 MHz 3600-4300 MHz 10 mW/+10 dBm 1.5 dB 0 to +65C 35 MHz 4300-5800 MHz 10 mW/+10 dBm 1.5 dB 0 to +65C 60 MHz 5800-6600 MHz 5 mW/+7 dBm 1.5 dB 0 to +65C 70 MHz 35 MHz 6 MHz/V -18 dB -60 dB 2 MHz * 6 MHz/V -20 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 308 VDC +45 VDC 45 pF 4 VDC 8 VDC +10 VDC 23 pF 82 VDC 244 VDC +30 VDC 45 pF 1.0 VDC Min 20.0 VDC Max. +30 VDC 45 pF 52.5 VDC 24+3/-5 VDC +30 VDC 45 pF -95 dBc/Hz -102 dBc/Hz -105 dBc/Hz -115 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 +5 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 @ 25C Case Temperature (0 to +65C Operating Temperature) Part Number VTO-8650 Frequency Range, Min. 6500-8600 MHz Power Output Into 50-ohm load, Min. 10 mW/+10 dBm Power Output Variation @ 25C., Max. 1.5 dB Operating Case Temperature Range 0 to +65C Frequency Drift Over Operating 100 MHz Temperature, Typ. Pulling Figure (12 dB Return Loss), Typ. 15 MHz Pushing Figure, +15 VDC Supply, Typ. 10 MHz/V Harmonics, Below Carrier, Typ. -20 dB Spurious Output Below Carrier, Min. -60 dB Tuning Voltage Low Frequency 21 VDC High Frequency 205 VDC Maximum Tuning Voltage 30 VDC Tuning Port Capacitance, Nom. 26 pF Phase Noise, Single Sideband, 1 Hz Bandwldth, Typ. 50 kHz From Carrier -80 dBc/Hz 100 kHz From Carrier -88 dBc/Hz Input Power 1% Regulation Voltage, Nom. +15 VDC Current, Max. 50 mA Case Style TO-8V VTO-8810 VTO-8850 8100-9100 MHz 10 mW/+10 dBm 1.5 dB 0 to +65C 110 MHz 8500-9600 MHz 10 mW/+10 dBm 1.5 dB 0 to +65C 110 MHz 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 10 MHz 5 MHz/V -20 dB -60 dB 2 VDC Min. 16 VDC Max. +30 VDC 26 pF 52 VDC 135 VDC +30 VDC 26 pF 41 VDC 10 VDC Max. +15 VDC 26 pF 4 VDC Min. 6 VDC Max. +15 VDC 26 pF -80 dBc/Hz -88 dBc/Hz -82 dBc/Hz -90 dBc/Hz -73 dBc/Hz -80 dBc/Hz -77 dBc/Hz -85 dBc/Hz +15 VDC 100 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 VTO-8950 VTO-810750 9500-10500 MHz 10650-10850 MHz 10 mW/+10 dBm 10 mW/+10 dBm 1.5 dB 1.5 dB 0 to +65C 0 to +65C 160 MHz 130 MHz 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 @ 25C Case Temperature TUNING VOLTAGE, VDC Figure 6. VTO-8240 Power Output, Frequency and Modulation Sensitivity vs. Tuning Voltage. 5 2 4 6 8 TUNING VOLTAGE, VDC 10 5 POWER OUTPUT, dBm TUNING CURVE 5500 4500 MODULATION SENSITIVITY 3500 0 8 16 24 32 40 250 13 12 11 10 6.5 6.0 5.5 0 600 6 MODULATION SENSITIVITY 5 4 0 2 400 200 0 4 6 8 10 12 14 16 18 20 22 TUNING VOLTAGE, VDC 140 TUNING CURVE 120 100 80 MODULATION 60 SENSITIVITY 40 20 0 5 10 15 20 25 TUNING VOLTAGE, VDC Figure 11. VTO-8650 Power Output, Frequency and Modulation Sensitivity vs. Tuning Voltage. POWER OUTPUT, dBm 15 14 13 FREQUENCY, GHz FREQUENCY, GHz 800 MODULATION SENSITIVITY, MHz/V POWER OUTPUT, dBm 1000 7 30 Figure 10. VTO-8580 Power Output, Frequency and Modulation Sensitivity vs. Tuning Voltage. POWER OUTPUT TUNING CURVE 25 7.0 48 Figure 9. VTO-8430 Power Output, Frequency and Modulation Sensitivity vs. Tuning Voltage. 8 20 POWER OUTPUT TUNING VOLTAGE, VDC 14 13 12 11 10 15 Figure 8. VTO-8360 Power Output, Frequency and Modulation Sensitivity vs. Tuning Voltage. FREQUENCY, GHz 1000 MODULATION SENSITIVITY, MHz/V POWER OUTPUT, dBm FREQUENCY, MHz POWER OUTPUT 6500 10 TUNING VOLTAGE, VDC Figure 7. VTO-8248 Power Output, Frequency and Modulation Sensitivity vs. Tuning Voltage. 13 12 11 10 9 90 TUNING CURVE 80 70 60 MODULATION 50 40 SENSITIVITY 30 20 10 MODULATION SENSITIVITY, MHz/V 4.3 4.2 4.1 4.0 3.9 3.8 3.7 3.6 3.5 MODULATION SENSITIVITY, MHz/V 0 POWER OUTPUT POWER OUTPUT 10 9 8 1200 TUNING CURVE 600 7 6 MODULATION SENSITIVITY 5 0 4 8 12 16 TUNING VOLTAGE, VDC 0 20 MODULATION SENSITIVITY, MHz/V TUNING CURVE POWER OUTPUT, dBm 9 8 7 6 5 4 3 2 1 MODULATION SENSITIVITY 11.5 11.0 10.5 FREQUENCY, GHz 2530 2520 2510 2500 2490 2480 2470 POWER OUTPUT MODULATION SENSITIVITY, MHz/V POWER OUTPUT, dBm 10 9 8 FREQUENCY, MHz Typical Performance (Continued) Figure 12. VTO-8810 Power Output, Frequency and Modulation Sensitivity vs. Tuning Voltage. 6 TUNING CURVE 10 400 9 MODULATION SENSITIVITY 8 0 5 10 15 20 25 30 35 40 300 200 100 0 45 50 POWER OUTPUT 12 800 11 TUNING CURVE 10 400 MODULATION SENSITIVITY 9 0 2 4 6 8 10 12 TUNING VOLTAGE, VDC TUNING VOLTAGE, VDC 200 10 9.5 MODULATION SENSITIVITY 9 2 4 6 8 TUNING VOLTAGE, VDC 100 LOG (f), dBc/Hz TUNING CURVE MODULATION SENSITIVITY, MHz/V POWER OUTPUT, dBm FREQUENCY, GHz POWER OUTPUT 300 8650 8240 -40 -60 -80 -100 -120 -140 -160 8248 8950 TO-8V Case Drawing .300 TYP .18 .150 TYP GROUND RF OUT 3 2 .300 TYP .45 DIA 4 .150 TYP GLASS RING .060 DIA TYP (3X) 1 CASE GROUND .22 MIN 10M Figure 16. Noise Comparison Single Sideband Phase Noise. Figure 15. VTO-810750 Power Output, Frequency and Modulation Sensitivity vs. Tuning Voltage. .50 DIA 0 16 810750 1k 10k 100k 1M FOURIER FREQUENCY, Hz 10 .017 +.002 -.001 14 Figure 14. VTO-8950 Power Output, Frequency and Modulation Sensitivity vs. Tuning Voltage. -20 11.5 11 10.5 200 8 Figure 13. VTO-8850 Power Output, Frequency and Modulation Sensitivity vs. Tuning Voltage. 13 12 11 600 MODULATION SENSITIVITY, MHz/V POWER OUTPUT, dBm POWER OUTPUT 13 12 11 10 FREQUENCY, GHz 15 14 13 MODULATION SENSITIVITY, MHz/V FREQUENCY, GHz POWER OUTPUT, dBm Typical Performance (Continued) 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 Description Test Fixtures for TO-8 Packages (TF 801/802) Oscillators (VTO) 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 TF Series test fixtures, they feature rugged construction for precise, repeatable measurements. Features * DC to 11 GHz Frequency Range * Connectorized Tuning Port and RF Output 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. * Easy to Test Package * Repeatable Performance Applications * Engineering Characterization * Incoming Inspection For different connector options check the table in Figure 15 to identify the correct part numbers. 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. The device under test is aligned according to Figure 15, and pushed fully down onto the fixture. The steel mounting ring * System Prototype * Demonstration of Device Performance TUNING VOLTAGE CONNECTOR .53 VTO IN PLACE TUNING VOLTAGE .35 POWER INPUT CONNECTOR + TUNING VOLTAGE PIN .83 DCPIN VDC .35 .45 GROUND .20 .55 .65 (a) GROUND .35 RFOUT .15 RFOUT .70 (b) (c) + TUNING VOLTAGE .300 TYP GROUND 2 .45 SERIES TUNING VOLTAGE RF OUTPUT TF-801 SMA SMA Figure 15. TO-8 Test Fixture. .150 TYP 3 CONNECTOR OPTIONS GROUND TAB ON PACKAGE CASE GROUND 4 1 RFOUT .150 TYP +DC VOLTAGE (Bottom View) www.semiconductor.agilent.com Data subject to change. Copyright (c) 2000 Agilent Technologies, Inc. Obsoletes 5964-9815E 5980-1278E (6/00)