Temex of France, a specialist in the field of high-performance time and frequency components and sub-systems, has launched a small-size Oven Controlled Crystal Oscillator (OCXO) in a 25mm x 25mm flat-pack package for space applications. This new low-consumption OCXO is designed specifically for applications such as deep-space up/down link transceivers where a wide operating temperature range and low energy consumption are critical.“

Designed to meet the ESA SCC3501 specification and in accordance with the MIL-PRF-55310 standard, the new low-consumption OCXO offers key advantages such as a frequency range of 30 to 120 MHz; a small size of just 25mm x 25mm x 17mm; a stability of ±0.1ppm nominal over a temperature range of -25°C to +70°C (vacuum condition); ageing of just ±2ppm after 15 years; consumption of only 0.3W at 25°C in steady state (vacuum condition); a supply voltage of 9 volts; and a phase noise floor at -155dBc/Hz at 100KHz from the carrier.

The frequency stability of this new OCXO has a positive impact on satellite transceiver performances. The transmission range is secured by the higher stability of the frequency and the low energy consumption is a mandatory requirement for space-borne equipment. A breadboard model or an engineering model of this new OCXO are available for system validation.

This breakthrough product results from Temex’s long-standing experience in the design and manufacture of highly stable and precise frequency sources for demanding scientific missions. Such deep space missions, like Mars Express, require state-of-the-art technology to secure a continuous transmission with high frequency stability. The International Space Station (ISS), Automated Transfer Vehicle (ATV) and Galileo programmes are also supported by Temex high-tech solutions.

The Temex Flatpack XO, VCXO and TCXO product ranges are already used all over the world. This new surface-mounted Flatpack OCXO frequency source provides the flexibility expected by our customers. It is the only OCXO worldwide providing such high performances at the same time – low consumption, low phase noise and reduced volume,” says Mr Jean Forget, Managing Director of Temex Defence and Space Business Group.