A 0.7V 17fJ/Step-FOMW 178.1dB-FOMSNDR 10kHz-BW 560mVPP True-ExG Biopotential Acquisition System with Parasitic-Insensitive 421MΩ Input Impedance in 0.18μm CMOS

Se‐Hwan Lee, Yoonsung Choi, Geunha Kim, Seungyeob Baik, Taeryoung Seol, Homin Jang, Doyoung Lee, Minkyu Je, Ji‐Woong Choi, Arup K. George, Junghyup Lee

20222022 IEEE International Solid- State Circuits Conference (ISSCC)16 citationsDOI

Abstract

Insights derived from epidemiological studies on the ExG (ECG, EEG, ENG, etc.) biopotentials can shed light on the underlying mechanisms of several chronic health conditions. A true biopotential acquisition system needs to have a noise floor <100nV/VHz, bandwidth up to 10kHz and input impedance >100MΩ to be able to cover the entire ExG spectrum (Fig. 20.3.1(a)). Also input range >100mV <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">PP</inf> is needed to avoid saturation in the presence of stimulation/motion artifacts. SNDR >80dB is needed to support ENG acquisition.

Topics & Concepts

Bandwidth (computing)Electrical impedanceData acquisitionElectronic engineeringComputer scienceElectrical engineeringEngineeringPhysicsTelecommunicationsOperating systemAnalog and Mixed-Signal Circuit DesignNeuroscience and Neural EngineeringECG Monitoring and Analysis

A 0.7V 17fJ/Step-FOM<sub>W</sub> 178.1dB-FOM<sub>SNDR</sub> 10kHz-BW 560mV<sub>PP</sub> True-ExG Biopotential Acquisition System with Parasitic-Insensitive 421MΩ Input Impedance in 0.18μm CMOS

Abstract

Topics & Concepts