Oven Controlled Crystal Oscillator

The new small smd oven controlled crystal oscillator ocxo by raltron covers a wide frequency range at a steady voltage supply and has offers phase noise can be used reliably for applications such as 5g wireless infrastructure transmission precision instrumentation broadcasting and utility metering infrastructure.

Oven controlled crystal oscillator. A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a precise frequency. 05 24 13 abracon is certified iso9001 2008. 1 control voltage 2 vref 3 supply voltage 4 rf output 5 ground. Using an thermostatically controlled oven to keep its temperature above the surrounding and hence at a constant temperature the ocxo a very stable signal source.

Unfortunately the thermal quality offered by a regular oven controlled crystal oscillator is not good enough to handle increasing frequency loads. An ocxo is a temperature controlled device that maintains a quartz crystal s constant operating temperature. 5 10 12 8 20 mhz holdover reference test equipment synthesizers military communication equipment. High performance crystal oscillators employ temperature control circuitry to hold the crystal and critical circuitry at a precise constant temperature.

An ocxo or oven controlled crystal oscillator is near the top of the food chain when it comes to quartz based frequency control devices superseded only by the mighty docxo or double oven. Oven controlled crystal oscillator reflow process compatible sc cut resonator temperature stability to 0 4 ppb aging rate options to 0 06 ppb day frequency range 5 to 20 mhz standard frequencies. The thermal quality of the oven controlled crystal oscillator is defined as. The relationship between the fluctuations of the ambient temperature and the component temperature.

A crystal oven is a temperature controlled chamber used to maintain the quartz crystal in electronic crystal oscillators at a constant temperature in order to prevent changes in the frequency due to variations in ambient temperature. The oven controlled crystal oscillator is able to provide exceedingly high levels of temperature stability. The best controllers are proportional providing a steady heating current which changes with the ambient temperature to hold the oven at a precise set point usually about 10 degrees above the. 14 6 x 9 7 x 6 5 smd type 50.