A low power and low noise reconfigurable analog front-end (AFE) system on a chip\n(SoC) for biosignal acquisition is presented. The presented AFE can be reconfigured for use in\nelectropotential, bioimpedance, electrochemical, and photoelectrical modes. The advanced healthcare\nservices based on multiparameter physiological biosignals can be easily implemented with these\nmultimodal and highly reconfigurable features of the proposed system. The reconfigurable gain and\ninput referred noise of the core instrumentation amplifier block are 25 dB to 52 dB, and 1 �¼VRMS,\nrespectively. The power consumption of the analog blocks in one readout channel is less than 52 �¼W.\nThe reconfigurable capability among various modes of applications including electrocardiogram,\nblood glucose concentration, respiration, and photoplethysmography are shown experimentally.
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