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SiTime delivers timing boost to cold temperature applications

SiTime, a leader in MEMS timing, is making available a significant new feature of the SiTime Endura SiT5146 Super-TCXO.

While previously these devices operated down to -40°C, they are now able to support -55°C. With this new capability, the SiT5146 is now able to deliver best-in-class stability over -55ºC to +105ºC, benefiting airborne applications such as low earth-orbiting (LEO) satellites, commercial aircraft, satellite communication systems, and rocket delivery systems as well as terrestrial systems residing in extremely cold environments.

“Aerospace and defence applications depend on precise and stable timing in the presence of extreme temperatures,” said Piyush Sevalia, executive vice president of marketing at SiTime. “While the challenge is significant, through our rapid-release derivatives program, we have been able to extend the operating temperature range of the SiT5146 to -55°C while maintaining ±1 to ±2.5 ppm stability and excellent performance in the presence of shock and vibration. With these features, the Endura SiT5146 is suitable for airborne and terrestrial applications that operate in extremely cold environments.”

The SiTime Endura SiT5146 is a ruggedized ±1 to ±2.5 ppm MEMS Super-TCXO that is available in two 'flavours' of acceleration sensitivities: 0.009 ppb/g and 0.1 ppb/g. It is able to withstand high levels of shock and vibration. Frequencies are programmable with 6 decimals of accuracy from 1 MHz to 60 MHz.

Offered in a 5.0 mm x 3.2 mm package, the SiT5146 can be factory programmed for any combination of frequency, stability, voltage, and pull range, enabling shorter lead times.

The device is available now in production quantities.

Neil Tyler

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