Endura precision timing solution enables faster GPS signal acquisition

SiTime Corporation has announced a 32 kHz MEMS Super-TCXO.

The SiT7910 is part of the company’s Endura ruggedised family for aerospace and defence applications. It is intended for devices that use global positioning system (GPS) signals, such as ruggedised handheld radios, ground vehicles and sensors, so that they can acquire and lock to GPS more quickly and securely with the 25x higher precision of this Super-TCXO.

The GPS signal is ubiquitous and is a crucial part of national security, everyday communications, financial systems, and power grid operations but is susceptible to environmental disruptions but also to jamming and spoofing.

GPS modernisation is currently a multibillion-dollar, multi-year effort that is looking to upgrade systems with better features, performance, and security at the heart of which is precision timekeeping, which ensures the faster and more secure acquisition of, and locking to GPS signals, even in the harshest of environmental conditions.

Key features of the Endura SiT7910 Super-TCXO

  • 768 kHz frequency
  • ±0.2 ppm frequency stability over -55°C to +105°C temperature range, up to 25x better than legacy quartz technology. The device maintains 1 second of accuracy for one year, vs. legacy quartz devices that can only maintain it for one to 14 days.
  • Best-in-class 20 ppb/g g-sensitivity for resilience in high-vibration environments
  • Ultra-low power consumption, typically 6.0 µA, for use in portable aerospace and defence electronics
  • ±5 ppm frequency aging over 20 years, maintains device performance over many years
  • 62 V to 3.63 V operating supply voltage range for design flexibility
  • Small 2.5 x 2.0 mm package for space-constrained applications
  • Pb-free, RoHS, and REACH compliant
  • Endura enhanced screening flow for high quality and reliability

The SiT7910 is sampling now.