...
首页> 外文期刊>Solid-State Circuits, IEEE Journal of >A Sub-0.1°/h Bias-Instability Split-Mode MEMS Gyroscope With CMOS Readout Circuit
【24h】

A Sub-0.1°/h Bias-Instability Split-Mode MEMS Gyroscope With CMOS Readout Circuit

机译:具有CMOS读出电路的0.1°/ h以下的偏置不稳定分模MEMS陀螺仪

获取原文
获取原文并翻译 | 示例
           

摘要

This paper describes a split-mode tuning fork MEMS gyroscope with CMOS readout circuit. The gyroscope achieves 0.008°$surd text{h}$nangle random walk (ARW) and 0.08°/h bias instability (BI). The noise and phase requirements of the MEMS sensing element and the readout circuit are analyzed, from which the system-level design guidelines are proposed. The MEMS sensing element is optimized to enhance its mechanical sensitivity with reduced quadrature coupling and thermoelastic damping. Front ends with 5.9-fA$surd $nHz input-referred current noise floor and less than 0.5° phase delay are achieved to reduce the gyroscope’s ARW and thermal drift. A low flicker noise automatic amplitude control circuit and digitized phase-sensitive demodulation are adopted to improve the gyroscope’s BI. After temperature compensation, the temperature coefficients (TCOs) of the scale factor and the zero-rate output are 27 ppm/°C and 1.7°/h/°C from −40 °C to +60 °C, respectively. The overall power consumption is 8.5 mW under a 3.3-V supply.
机译:本文介绍了一种具有CMOS读出电路的分模式音叉MEMS陀螺仪。陀螺仪达到0.008°/ n $ surd text {h} $ 无规随机游走(ARW)和0.08°/ h偏置不稳定性(BI)。分析了MEMS传感元件和读出电路的噪声和相位要求,从中提出了系统级设计指南。 MEMS传感元件经过优化,可通过减少正交耦合和热弹性阻尼来增强其机械灵敏度。前端为5.9-fA / n $ surd $ nHz输入参考电流本底噪声和小于0.5°的相位延迟可降低陀螺仪的ARW和热漂移。采用低闪烁噪声自动幅度控制电路和数字化的相敏解调来改善陀螺仪的BI。经过温度补偿后,从-40°C至+60°C,比例因子和零速率输出的温度系数(TCO)分别为27 ppm /°C和1.7°/ h /°C。在3.3V电源下,总功耗为8.5mW。

著录项

  • 来源
    《Solid-State Circuits, IEEE Journal of》 |2018年第9期|2636-2650|共15页
  • 作者单位

    School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, China;

    Department of Electronic Engineering, Tsinghua University, Beijing, China;

    School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, China;

    School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, China;

    School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, China;

    School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, China;

    Department of Electrical and Computer Engineering, National University of Singapore, Singapore;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Gyroscopes; Micromechanical devices; Sensors; Bandwidth; Sensitivity; Demodulation; Circuit stability;

    机译:陀螺仪;微机械设备;传感器;带宽;灵敏度;解调;电路稳定性;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号