Title :
A Hall sensor analog front end for current measurement with continuous gain calibration
Author :
Pastre, Marc ; Kayal, Maher ; Blanchard, Hubert
Author_Institution :
Swiss Fed. Inst. of Technol., Lausanne, Switzerland
Abstract :
A fully integrated analog front-end for Hall sensors continuously calibrates the gain of the sensor and amplifier circuitry without interfering with normal operation. An integrated coil generates a modulated reference magnetic field measured by the sensor and combined with the external field. A better than 50ppm/°C gain drift is achieved.
Keywords :
Hall effect devices; amplifiers; calibration; electric current measurement; Hall sensor; amplifier circuitry; analog front end; continuous gain calibration; current measurement; integrated coil; modulated reference magnetic field; Aging; Calibration; Coils; Current measurement; Demodulation; Magnetic field measurement; Magnetic sensors; Mechanical sensors; Stress; Temperature sensors;
Conference_Titel :
Solid-State Circuits Conference, 2005. Digest of Technical Papers. ISSCC. 2005 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8904-2
DOI :
10.1109/ISSCC.2005.1493959
