VTO-8150 Datasheet | Agilent(Hewlett-Packard)

Varactor-Tuned Oscillators Technical Data VTO-8000 Series Features - 600 MHz to 10.5 GHz Coverage - Fast Tuning - +7 to +13 d Bm Output Power - ± 1.5 d B 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␣ k Hz within one microsecond while the VTO-8950 settles to <2␣ MHz within two microseconds referenced to ten milliseconds. The VTO-8850 bines a bipolar transistor oscillator with a Ga As FET buffer stage. This Ga As 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 d Bm 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 pact, lightweight mercial 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. Pin Configuration TO-8V GROUND +V TUNE 2 1 3 4 RFOUT +DC VOLTAGE CASE GROUND 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...