公开(公告)号：US20230375372A1

公开(公告)日：2023-11-23

申请号：US18248520

申请日：2020-11-20

申请人： Analog Devices International Unlimited Company

发明人： Jochen Schmitt ,  Monsoon Dutt ,  Stephen Morris

IPC分类号： G01D5/245

CPC分类号： G01D5/2455 ,  G01D2205/26

摘要： The present disclosure provides a magnetoresistive quadrant detector for use in a magnetic sensing device comprising a magnetic multi-turn sensor and an angle turn sensor, in particular, an angle sensor configured to provide 180° absolute angle measurements, such as an anisotropic magnetoresistive (AMR) angle sensor. The quadrant detector is formed of at least two magnetoresistive elements, preferably giant magnetoresistive (GMR) elements, which may be integrated to the multi-turn sensor die or provided on a separate die within the sensor package. The magnetoresistive elements are configured to provide a unique combination of resistance states for each quadrant of magnetic field direction. This quadrant information can then be used to remedy any ambiguities in the multi-turn measurement without needing 360° absolute angle information from the single turn angle sensor.