We developed a new integrated magnetic sensor based on the Hall effect, suitable for the application in magnetic contactless 360° absolute angle sensors. The device consists of a narrow n-well ring with a chain of 64 contacts equally distributed around the ring. The contacts are connected to an on-chip electronics with biasing and signal conditioning circuits providing the information about the magnitude and phase of in-plane component of the magnetic field. We characterized the sensor in homogenous magnetic field of 100 mT and measured the angular resolution of 0.01° in the frequency bandwidth of 1 kHz and the absolute angular accuracy of about 1° and 0.1° without and with output offset calibration of the sensor, respectively.
Edoardo Charbon, Francesco Piro, Ashish Sharma
Josephine Anna Eleanor Hughes, Sudong Lee
Mahmut Selman Sakar, Mehdi Ali Gadiri, Junsun Hwang, Amit Yedidia Dolev