Tutorial: Readout Circuits for Physiological Signal Measurements

“Wearable electronics has become mainstream, enabling personal healthcare technologies in the form of patches, wristbands, and smart watches. Measurements of physiological parameters outside of traditional clinical settings make reliable and sustainable measurement a real challenge. This tutorial provides an overview of how to design low-power readout circuits for measuring different physiological signal modalities in a wearable environment. The talk starts with discussing signal integrity problems. We then focus on different topologies of instrumentation amplifiers and readout circuits (including commercially available ICs in the filed) for measuring ECG, Bio-Impedance, and Photoplethysmography (PPG).”