Title :
Sensitivity online recognition of AMR sensor
Author :
Li, Xisheng ; Kang, Ruiqing ; Liu, Yanxia ; Wang, Zhihua ; Shu, Xiongying ; Lan, Jinhui
Author_Institution :
Sch. of Inf. Eng., Univ. of Sci. & Technol. Beijing, Beijing, China
Abstract :
The anisotropic magnetoresistive (AMR) sensor is one type that lends itself well to the earth´s field sensing range. The key benefit of AMR sensors is they can be bulk manufactured on silicon wafers and mounted in commercial integrated circuit packages. But the sensitivity of AMR sensor changes greatly with the temperature of surrounding and cross-axis field. The sensitivity compensation method for AMR sensor based on sensitivity recognition is proposed in this paper. The results of experiment show that the sensitivity of HMC1002 without temperature and cross-axis field compensation varies greatly after power on, the sensitivity of HMC1002 with temperature and cross-axis field compensation is stable after power on. It can be seen that proposed sensitivity compensation method is effective.
Keywords :
enhanced magnetoresistance; sensitivity; sensors; AMR sensor; anisotropic magnetoresistive sensor; integrated circuit packages; sensitivity compensation method; sensitivity online recognition; silicon wafer; Anisotropic magnetoresistance; Bridge circuits; Integrated circuit manufacture; Magnetic fields; Magnetic films; Magnetic sensors; Silicon; Temperature sensors; Thin film sensors; Voltage; Anisotropic magnetoresistive sensor; Magnetic sensor application; cross-axis field; sensitivity compensation;
Conference_Titel :
Information and Automation (ICIA), 2010 IEEE International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-5701-4
DOI :
10.1109/ICINFA.2010.5512144
