Key result
Novel reconfigurable biosignal SoC successfully achieves low-power multimodal ECG and PPG acquisition.
The proposed highly reconfigurable AFE SoC enables low-power multiparameter physiological monitoring for wearable healthcare platforms.
Supports next-generation wearable monitors; leaves open prospective clinical validation before routine use.
A low power and low noise reconfigurable analog front-end (AFE) system on a chip (SoC) for biosignal acquisition is presented. The presented AFE can be reconfigured for use in electropotential, bioimpedance, electrochemical, and photoelectrical modes. The advanced healthcare services based on multiparameter physiological biosignals can be easily implemented with these multimodal and highly reconfigurable features of the proposed system. The reconfigurable gain and input referred noise of the core instrumentation amplifier block are 25 dB to 52 dB, and 1 μVRMS, respectively. The power consumption of the analog blocks in one readout channel is less than 52 μW. The reconfigurable capability among various modes of applications including electrocardiogram, blood glucose concentration, respiration, and photoplethysmography are shown experimentally.
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Kim et al. (2016) studied this question. Reconfigurable multiparameter biosignal acquisition SoC was evaluated. A low-power and low-noise reconfigurable analog front-end system on a chip was successfully developed and experimentally validated for multimodal biosignal acquisition including ECG and PPG.
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