Title :
Highly sensitive Hall magnetic sensor microsystem in CMOS technology
Author :
Randjelovic, Zoran B. ; Kayal, Maher ; Popovic, Radevoje ; Blanchard, Hubert
Author_Institution :
Microelectronic-Marin SA, Marin, Switzerland
fDate :
2/1/2002 12:00:00 AM
Abstract :
A highly sensitive magnetic sensor microsystem based on a Hall device is presented. This microsystem consists of a Hall device improved by an integrated magnetic concentrator and new circuit architecture for the signal processing. It provides an amplification of the sensor signal with a resolution better than 30 μV and a periodic offset cancellation while the output of the microsystem is available in continuous time. This microsystem features an overall magnetic gain of 420 V/T
Keywords :
CMOS integrated circuits; Hall effect transducers; analogue processing circuits; magnetic sensors; microsensors; mixed analogue-digital integrated circuits; CMOS Hall sensor; CMOS technology; Hall device; analog front-end electronics; continuous time output; highly sensitive magnetic sensor microsystem; integrated magnetic concentrator; interface electronics; microsystem architecture; mixed-mode circuitry; overall magnetic gain; periodic offset cancellation; sensor signal amplification; signal processing circuit architecture; CMOS technology; Crystallography; Hall effect devices; Integrated circuit technology; Magnetic devices; Magnetic sensors; Mechanical sensors; Sensor phenomena and characterization; Stress; Switching circuits;
Journal_Title :
Solid-State Circuits, IEEE Journal of
