SiTime SiT58xx Epoch High-Precision MEMS OCXOs

SiTime’s Epoch timing devices are a high-precision, high-stability alternative to legacy quartz-based oscillator technology and are suitable for use in 5G network applications – which must be synchronised to within hundreds of nanoseconds, 10x more stringent than for 4G networks – with a time to stable operation of just 60 seconds.

Like other SiTime timing devices, a basis in MEMS (Micro-Electromechanical Systems) technology provides designers with system clocks that radically out-perform legacy quartz in environments that are prone to mechanical shock and vibration and/or changes in temperature. 8 hours of holdover (12 hours with aging compensation), 9x decrease in footprint (9 x 7 x 3.73 mm for 25x decrease in volume), and 3x lower power consumption (420 mW) make SiTime’s MEMS-based, oven-controlled oscillators (OCXOs) a forward-thinking solution for applications that include telecommunications and network infrastructure, datacentres, aerospace and defence, and industrial control.

The Epoch devices are programmable for output at 10-220 MHz at up to 6-decimal-place precision, operating on 2.5, 2.8, or 3.3 V and controlled using I2C and SPI interfaces. The widest operating temperature range offered is -40°C to +95°C, with down to ±1 ppb frequency stability over temperature and 3x better Allen variation under air cooling. Illustrating the robustness of MEMS technology over quartz, SiTime’s Epoch devices are stated as aging ±0.08 ppb/day.

SiTime’s Epoch MEMS OCXOs will be available for general sampling in October 2023, and volume production is expected in early 2024. Fill out the form below to become an early adopter of this technology for your next commercial project and discover more about the ways to evaluate it.

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