Highly Sensitive Hall Sensor for Brushless DC Motor

摘要：

This paper describes a highly sensitive integrated Hall sensor with 0.6 urn BiCMOS technology for brushless DC motor. The sensor contains a switched cross-shaped Hall plate and a novel signal conditioner circuit with a dynamic quadrature offset cancellation technique. Although the signal conditioner is very simple, the sensor has achieved a very high sensitivity. The simulation results show it can detect minimum 2.5 mT magnetic field and realize CMOS digital signal output. Meanwhile, the offset signal of more than 9 mV amplitude can be effectively cancelled out.

关键词： Hall sensor off cancellation chopped amplifier

作者: XuYue Pan Hongbin He Shuzhuan Zhao Mao Shi Yi

作者单位: Institute of VLSI Design,Nanjing University,Nanjing 210093 China Key Laboratory of Advanced Photonic Institute of VLSI Design,Nanjing University,Nanjing 210093 China Key Laboratory of Advanced Photonic

会议类型: 国际会议

会议名称: The Third International Symposium on Test Automation & Instrumentation(第三届国际自动化测试与仪器仪表学术会议 2010 ISTAI)

会议地点: 厦门

会议语种:英文

页码: 446-450

在线出版日期: 2010-05-22（万方平台首次上网日期，不代表论文的发表时间）