A 0.5-to-480MHz Self-Referenced CMOS Clock Generator with 90ppm Total Frequency Error and Spread-Spectrum Capability

📋 论文概要

该论文提出了一种自参考CMOS时钟发生器，无需外部晶体或MEMS谐振器，覆盖0.5至480MHz频率范围，总频率误差仅为90ppm，并具备扩频能力。解决了传统晶体振荡器难以集成的问题，实现了全集成时钟生成。

💡 主要创新点

• 采用自参考架构，无需外部参考源，实现全集成时钟生成。
• 宽频率范围（0.5-480MHz）且总频率误差低至90ppm，同时支持扩频以降低电磁干扰。

🏷 关键词

📄 原文摘要

Gordy Carichner1, Eric Marsman1, Nam Nguyen2, Sundus Kubba1, Si Nguyen2, Jon Kuhn1, Richard B. Brown3 1 Mobius Microsystems, Detroit, MI, 2Mobius Microsystems, Sunnyvale, CA University of Utah, Salt Lake City, UT 3 The quartz crystal (XTAL) oscillator is one of the last components in electronic systems that has yet to be integrated. Consequently, integrating crystal oscillators (XOs) has become a research target for the developers of MEMS microresonators. Recent and representative examples of MEMS oscillators include [1] and [2]. Unfortunately, MEMS microresonators introduce certain challenges including limited power-handling capability [2]. The limitations of MEMS have resulted in recent work, e.g., [3] and [4], exploring the limits of compensated CMOS oscillators as an alternative solution. The advent of RF CMOS circuits and associated advances in CMOS process technology have enabled the development of low-noise integrated LC oscillators (LCOs) [5], which are

👥 作者与机构

Michael S. McCorquodale1, Scott M. Pernia1, Justin D. O’Day1,