A 1.4µW/MHz 100MHz RC Oscillator with ±1030ppm Inaccuracy from -40°C to 85°C After Accelerated Aging for 500 Hours at 125°C

📋 论文概要

本文提出了一种1.4µW/MHz、100MHz的RC振荡器，通过新颖的补偿技术将-40°C至85°C范围内的频率不准确度降低至±1030ppm，并验证了500小时加速老化后的稳定性，旨在替代晶体或MEMS振荡器用于中高稳定性时钟源。

💡 主要创新点

• 提出针对电阻温度系数（TC）引起频率误差的新型补偿方法，在宽温度范围内实现高精度。
• 通过加速老化测试（500小时@12V？）验证了长期可靠性，保证全生命周期性能。
• 实现了极低功耗（1.4µW/MHz）与较高频率（100MHz）的平衡，适合移动和物联网应用。

🏷 关键词

📄 原文摘要

preferred clock source in many applications, which typically have used bulky crystal or MEMS oscillators. Using novel methods to compensate for the frequency inaccuracy caused by the temperature coefficient (TC) of the resistors used in the reference RC networks, prior works have achieved excellent short-term frequency stability [1,2]. While this level of performance undoubtedly makes RC oscillators a desirable option even in applications requiring medium-to-high stability clock sources, they cannot be deployed commercially until the performance is guaranteed over their lifetime. Unfortunately, literature on the aging behavior of RC oscillators is scarce. Given this critical shortcoming, this paper quantifies aging in RC oscillators and presents methods to overcome it. The results obtained from

👥 作者与机构

Kyu-Sang Park, Nilanjan Pal, Yongxin Li, Ruhao Xia, Tianyu Wang,

Ahmed Abdelrahman, Pavan Kumar Hanumolu University of Illinois, Urbana, IL Monolithic RC oscillators are increasingly becoming the