A 3-Axis MEMS Gyroscope with 2.8ms Wake-Up Time Enabled by a 1.5µW Always-On Drive Loop

📋 论文概要

该论文提出了一种3轴MEMS陀螺仪，通过1.5µW的常开驱动环路实现了2.8ms的唤醒时间，解决了常开模式下电流消耗与唤醒时间之间的权衡问题。

💡 主要创新点

• 采用突发模式锁相环（BPLL）技术，在保持低功耗的同时显著缩短唤醒时间。
• 实现了1.5µW的常开驱动环路功耗，支持事件驱动操作以延长电池寿命。

🏷 关键词

📄 原文摘要

mobile and wearable devices with human-machine interfaces for motion detection and indoor navigation [1-5]. In these applications, the always-on mode (i.e., standby or suspend mode) is required to support event-driven operation and extend battery life [3-5]. One of the key design challenges is the trade-off between the always-on current consumption and the wake-up time. To meet this challenge, an always-on MEMS gyroscope with burst-mode phase-locked loop (BPLL) technique was reported, which achieved an always-on current of 737nA and a wake-up time of 5.45ms

👥 作者与机构

Longjie Zhong1, Jinwen Zhang1, Chengyue Li1, Ling Wang1, Mingsheng Zhong1,

Kangkang Cai2, Ji Gao2, Tiegang Hu2, Zhangming Zhu1 Xidian University, Xi’an, China Silan Microelectronics, Hangzhou, China 1 2 MEMS gyroscopes are widely used in