SiTime sampling Elite X Super-TCXO


“Twenty-two million autonomous vehicles on the road by 2025, the rapid adoption of 5G, and the continued growth of data centers will require a large buildout in outdoor, decentralized edge networks,” says SiTime evp Piyush Sevalia, “these new edge devices and their precision timing heartbeat must perform reliably in the presence of extreme temperatures, thermal shock, and vibration. Here, our Elite X Super-TCXO shines by delivering 2x better stability and 30x higher reliability than quartz. Consequently, we believe that Elite X will now be the precision timing device of choice in edge equipment.”

To enable new time-sensitive services such as ADAS, virtual reality, and smart manufacturing, edge devices will need to deliver faster speeds with lower latency.

Precision timing plays a crucial role in their success. Legacy timing devices such as quartz TCXOs and mini-OCXOs have well-known weaknesses such as sensitivity to thermal shock and vibration, stability degradation at high temperatures, and shorter operating life.

By using silicon MEMS technology that is inherently more robust and reliable, Elite X overcomes these problems and enables the next generation of time-sensitive services everywhere.

In edge networks, additional specifications such as aging, warm-up time, and power consumption are important for overall performance.

Here, SiTime Elite X outperforms legacy timing devices, simplifies system design, and offers dependable, consistent performance.

With Elite X (±10-20 ppb stability), Emerald (±5 ppb), and Elite (±50-500 ppb), SiTime offers a broad portfolio of best-in-class TCXOs and OCXOs that meet various application requirements in communications, networking, automotive, and industrial IoT.

The SiT5501 Elite X Super-TCXO includes the following features and benefits:

  • ±10 ppb frequency stability
  • -40°C to +105°C operating temperature. More applications require 105°C operation.
  • 110 mW typical power consumption
  • Small package, 7.0 mm x 5.0 mm
  • ±0.5 ppb/°C dF/dT (frequency slope), resistant to thermal shock and airflow
  • ±0.5 ppb daily aging
  • Any frequency from 1 to 60 MHz with up to 6 decimal places of accuracy

Samples of the SiT5501 Elite X Super-TCXO are available now, with volume production in Q3’2022





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