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A 345 µW Multi-Sensor Biomedical SoC With Bio-Impedance, 3-Channel ECG, Motion Artifact Reduction, and Integrated DSP | IEEE Journals & Magazine | IEEE Xplore
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A 345 µW Multi-Sensor Biomedical SoC With Bio-Impedance, 3-Channel ECG, Motion Artifact Reduction, and Integrated DSP


Abstract:

This paper presents a MUlti-SEnsor biomedical IC (MUSEIC). It features a high-performance, low-power analog front-end (AFE) and fully integrated DSP. The AFE has three bi...Show More

Abstract:

This paper presents a MUlti-SEnsor biomedical IC (MUSEIC). It features a high-performance, low-power analog front-end (AFE) and fully integrated DSP. The AFE has three biopotential readouts, one bio-impedance readout, and support for general-purpose analog sensors The biopotential readout channels can handle large differential electrode offsets ( {\pm} 400 mV), achieve high input impedance ({>} 500 M\Omega ), low noise ({<} 620 nVrms in 150 Hz), and large CMRR ( {>}110 dB) without relying on trimming while consuming only 31 \mu W/channel. In addition, fully integrated real-time motion artifact reduction, based on simultaneous electrode-tissue impedance measurement, with feedback to the analog domain is supported. The bio-impedance readout with pseudo-sine current generator achieves a resolution of 9.8 m \Omega/ \surdHz while consuming just 58 \muW/channel. The DSP has a general purpose ARM Cortex M0 processor and an HW accelerator optimized for energy-efficient execution of various biomedical signal processing algorithms achieving 10\times or more energy savings in vector multiply-accumulate executions.
Published in: IEEE Journal of Solid-State Circuits ( Volume: 50, Issue: 1, January 2015)
Page(s): 230 - 244
Date of Publication: 14 October 2014

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