论文信息 - Chopper stabilized integrated Hall effect magnetometer

Chopper stabilized integrated Hall effect magnetometer

This paper presents a low noise, low offset and wide dynamic range Hall effect magnetometer integrated in a 0.35 ¿m CMOS technology. It features a spinning-current operated Hall device and a chopper stabilization, which has been unconventionally implemented using high-pass filters. The magnetometer exhibits 350 ¿T offset, can measure magnetic fields up to 1T with 10 ¿T resolution over a 3.6 kHz bandwidth.

C. Kern | L. Hebrard | V. Frick | C. Ouffoue

[1] Philippe Poure,et al. Hall effect sensors integrated in standard technology and optimized with on-chip circuitry , 2006 .

[2] Gabor C. Temes,et al. Circuit techniques for reducing the effects of op-amp imperfections: autozeroing, correlated double sampling, and chopper stabilization , 1996, Proc. IEEE.

[3] Vincent Frick,et al. New fully differential instrumental chain for Hall sensor signal conditioning integrated in standard 0.35 μm CMOS process , 2009, 2009 Joint IEEE North-East Workshop on Circuits and Systems and TAISA Conference.

[4] Qiuting Huang,et al. A low-noise CMOS instrumentation amplifier for thermoelectric infrared detectors , 1997 .