학술논문
A Fast Interface Circuit Using Multiple Signal Paths for High Bandwidth Hall Sensors
Document Type
Conference
Author
Source
2022 20th IEEE Interregional NEWCAS Conference (NEWCAS) Interregional NEWCAS Conference (NEWCAS), 2022 20th IEEE. :218-221 Jun, 2022
Subject
Language
Abstract
A high bandwidth readout interface circuit is designed for Hall sensors having a system bandwidth of >40 MHz. This interface circuit is designed to reduce the sensor offset and provide a fast response to any change detected in the magnetic field. Current spinning in combination with chopper stabilization technique is applied to the low-frequency signal to remove offset. In contrast, the high-frequency signal is directly filtered to reject the offset. This solution provides a high bandwidth interface design that allows full sensor bandwidth to be utilized.