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A low-power interface circuit for multi-sensor applications

  • Po Chang Wu
  • , Bin Da Liu
  • , Chih Yuan Yeh
  • , Sih Yu Chen
  • , Hann Huei Tsai
  • , Ying Zong Juang

研究成果: Conference contribution

1   !!Link opens in a new tab 引文 斯高帕斯(Scopus)

摘要

This paper presents a low-power generic readout circuit for capacitive and resistive complementary metaloxide-semiconductor (CMOS) micro-electro-mechanical-system (MEMS) sensors. This readout architecture can be scaled to even more sensors to achieve chip area and power consumption efficient. An incremental sigma-delta analog-to-digital converter (ΣΔ ADC) is used for providing multiplexed digital output. A demonstration chip was implemented in a 0.18-μm CMOS MEMS process, which integrates a three-axis accelerometer, the readout circuit, and an ARM M0 microprocessor. The chip area is 3.5×2.5 mm2 and the interface circuit with ADC draw only 120 mA of current from a 1.8-V supply. A magneto-resistance-type three-axis magnetic sensor is manufactured via extra post processes. This chip is designed to demonstrate a monolithic virtual gyroscope, which is a popular solution for low-power and low-cost inertial applications.

原文English
主出版物標題2nd IEEE International Symposium on Inertial Sensors and Systems, IEEE ISISS 2015 - Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9781479959143
DOIs
出版狀態Published - 2015 5月 5
事件2nd IEEE International Symposium on Inertial Sensors and Systems, IEEE ISISS 2015 - Hapuna Beach, United States
持續時間: 2015 3月 232015 3月 26

出版系列

名字2nd IEEE International Symposium on Inertial Sensors and Systems, IEEE ISISS 2015 - Proceedings

Other

Other2nd IEEE International Symposium on Inertial Sensors and Systems, IEEE ISISS 2015
國家/地區United States
城市Hapuna Beach
期間15-03-2315-03-26

All Science Journal Classification (ASJC) codes

  • 電氣與電子工程
  • 硬體和架構

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