A Biomedical Sensor Interface With a sinc Filter and Interference Cancellation

Bohorquez J. L.; Yip M.; Chandrakasan A. P.Dawson J. L.

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A Biomedical Sensor Interface With a sinc Filter and Interference Cancellation

机译：A Biomedical Sensor Interface With a sinc Filter and Interference Cancellation

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摘要

A compact, low-power, digitally-assisted sensor interface for biomedical applications is presented. It exploits oversampling and mixed-signal feedback to reduce system area and power, while making the system more robust to interferers. Antialiasing is achieved using a charge-sampling filter with a sinc frequency response and programmable gain. A mixed-signal feedback loop creates a sharp, programmable notch for interference cancellation. A prototype was implemented in a 0.18-$mu{hbox {m}}$ CMOS process. The on-chip blocks operate from a 1.5-V supply and consume between 255 nW and 2.5 $mu{hbox {W}}$ depending on noise and bandwidth requirements.

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来源
《IEEE Journal of Solid-State Circuits》 |2011年第4期|746-756|共11页
作者
Bohorquez J. L.; Yip M.; Chandrakasan A. P.Dawson J. L.;
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作者单位

Convergence Medical Devices Inc, Winchester, MA, USA;

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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
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关键词
Antialiasing; biomedical; digitally-assisted; interference cancellation; low-noise instrumentation; medical implants; mixed-signal feedback; power line interference; sensors; sinc filter;

A Biomedical Sensor Interface With a sinc Filter and Interference Cancellation

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