A 10 kPixel CMOS Hall Sensor Array With Baseline Suppression and Parallel Readout for Immunoassays

Gambini S.; Skucha K.; Liu P. P.Kim J.Krigel R.

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A 10 kPixel CMOS Hall Sensor Array With Baseline Suppression and Parallel Readout for Immunoassays

机译：A 10 kPixel CMOS Hall Sensor Array With Baseline Suppression and Parallel Readout for Immunoassays

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摘要

A CMOS microsystem for detecting microparticles in magnetic immunoassays uses the intrinsic dynamics of magnetization in super-paramagnetic materials to reduce measurement baseline by $ 300times$/tex/formula compared to conventional methods, and to achieve a $hbox{signal} mathchar"702D hbox{to} mathchar"702D hbox{baseline~ ratio} 1$/tex/formula, with an improvement of over 50$,times$/tex /formula compared to systems that ignore bead dynamics. The microsystem integrates a 64$,times,$/tex /formula160 Hall-sensor array with column-parallel readout electronics that combine auto-zeroing and nested chopping to enable low-offset, power efficient signal acquisition and has an Allan deviation floor of 9 nT.

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来源
《IEEE Journal of Solid-State Circuits》 |2013年第1期|302-317|共16页
作者
Gambini S.; Skucha K.; Liu P. P.Kim J.Krigel R.;
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作者单位

BSAC UC Berkeley, University of California, Berkeley,;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类基本电子电路;
关键词
Arrays; Atmospheric measurements; Frequency measurement; Magnetic domains; Magnetization; Noise; Temperature measurement; Auto-zeroing; CMOS; Hall effect; chopping; immunosensor; magnetic immunoassays; offset; paramagnetism;

A 10 kPixel CMOS Hall Sensor Array With Baseline Suppression and Parallel Readout for Immunoassays

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