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Epson FA1612AA crystal oscillator drives UWB digital key with precise clock to unlock a new era of intelligent in car technology

  • Mar 28,2025
  • 11 VIEWS

With the advancement of the intelligent wave of automobiles, UWB (Ultra Wideband) digital keys are becoming a core technology that car companies are competing to deploy, thanks to their centimeter level positioning accuracy, anti relay attack, and seamless interaction advantages. The reliable operation of this innovative technology relies on the precise support of key components - crystal oscillators. Epson's FA1612AA crystal oscillator, with its automotive grade performance and miniaturized design, has become an ideal choice for UWB digital key systems, helping to upgrade car safety and intelligence.



The technical features of Epson crystal oscillator FA1612AA in UWB digital key:

1. Vehicle grade reliability, stable guarantee in harsh environments

FA1612AA strictly complies with the AEC-Q200 standard and can operate stably within a wide temperature range of -40 ℃ to+125 ℃, with a frequency tolerance as low as ± 50 × 10 ⁻⁶, ensuring that UWB signals remain accurate even in extreme weather or complex electromagnetic environments. This feature is crucial for UWB systems that rely on timestamp encryption to avoid positioning errors or security vulnerabilities caused by clock drift.

2. Miniature design, compatible with compact car modules

The FA1612AA, with a packaging size of only 1.6 × 1.2mm and a thickness of 0.35mm, perfectly meets the miniaturization needs of devices such as car electronic keys and TCUs (remote information processing control units). Its four pin design (X'tal 2-pin, GND 2-pin) further optimizes the circuit layout, providing a hardware foundation for the lightweight and high integration of UWB anchor modules.

3. High bandwidth range, covering the UWB core frequency band

Supporting a frequency range of 24MHz to 80MHz, FA1612AA can flexibly adapt to the fundamental frequency signals required for UWB systems in the 3.5GHz to 10.6GHz ultra wideband communication frequency band. Its low phase noise characteristics can also improve signal integrity and reduce the impact of multipath interference on positioning accuracy.


The Epson FA1612AA crystal oscillator, with its high precision, high reliability, and compact design, has become an ideal clock solution for UWB digital key systems. In the process of intelligent vehicles evolving towards higher-level autonomous driving, FA1612AA not only provides core power for the stable operation of digital keys, but also promotes the upgrade of in vehicle intelligent interaction through technological innovation.