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Synergy Microwave has released a new 1 GHz, ultra-low noise, phase-locked oven controlled crystal oscillator (PLOCXO) that is ideal for low jitter analog-to-digital and digital-to-analog converter or local oscillators applications. The PLOCXO features a user-programmable input reference of 1, 5, 10, 20 or 50 MHz, with other frequencies available if requested. This programmability enables the source to be tailored to the requirements of various applications in radar, instrumentation and test equipment.

The PLOCXO provides a sine wave output of +13 dBm into 50 Ω, typical, and very low phase noise of −110 dBc/Hz at 100 Hz offset, −153 dBc/Hz at 10 kHz offset and −165 dBc/Hz at 10 MHz offset. Harmonics are −30 dBc maximum, with sub-harmonics suppressed to −40 dBc maximum.  Phase-locked loop spurious products are down at least 60 dBc, and all other spurious are down at least 80 dBc. Free running, long-term aging is within ±200 ppb after 30 days of operation.

Two SMA connectors are used for the reference input and RF output, with a 9-pin D-connector for DC bias. A “lock detect” signal is provided on the 9-pin connector to show status, with 2.3 to 3.3 V indicating “locked” and 0 to 1 V if the oscillator is “unlocked.”  The unit is powered with +15 V, drawing a warm-up current of 600 mA maximum and a steady-state operating current of 300 mA maximum at 25°C. The oscillator measures 2.4" x 2.4" x 1.2" and weighs 7 oz.

With an operating temperature range from −10°C to +60°C and meeting the shock and vibration requirements of MIL-STD-810F and MIL-PRF-55310D, as well as IEC60068 and IEC60679-1, this commercial off-the-shelf source is excellent for both military and commercial applications.

Synergy Microwave Corp.
Paterson, N.J.