A 185fsrms-Integrated-Jitter and -245dB FOM PVT-Robust Ring-VCO-Based Injection-Locked Clock Multiplier with a Continuous FrequencyTracking Loop Using a Replica-Delay Cell and a Dual-Edge Phase Detector

📋 论文概要

本文提出了一种基于环形VCO的注入锁定时钟倍频器，通过连续校准机制实现PVT鲁棒性。该设计在185fs rms集成抖动和-245dB FOM下，解决了传统ILCM对PVT变化敏感的问题。

💡 主要创新点

• 提出连续校准方案，无需额外PLL即可实现PVT鲁棒性。
• 在环形VCO中实现低抖动性能，达到185fs rms集成抖动。
• 获得-245dB的FOM，兼顾低抖动与低功耗。

🏷 关键词

📄 原文摘要

An injection-locked clock multiplier (ILCM) is considered to be a promising solution that can generate low-jitter, high-frequency clocks, using a limited budget in terms of silicon area and power consumption. However, an ILCM has a critical problem in that its jitter performance is sensitive to process, voltage, and temperature (PVT) variations. Thus, in general, an ILCM must be equipped with a dedicated PVT-calibrator to mitigate the sensitivity of its performance to PVT variations. One of the most general calibration methods is to use a phase-locked loop (PLL). This method can correct static frequency deviations of a voltagecontrolled oscillator (VCO) due to process variations, but it cannot prevent real-time frequency drifts due to temperature or voltage variations [1]. Recently, many efforts have been made to develop new PVT-calibrators, capable of continuous frequency tracking [1-6]. In [1-3], frequency drifts were monitored

👥 作者与机构

Seojin Choi, Seyeon Yoo, Jaehyouk Choi

Ulsan National Institute of Science and Technology, Ulsan, Korea