JOURNAL ARTICLE
A 60μW 60nV/radicHz readout front-end for portable biopotential acquisition systems
Abstract
A biopotential readout front-end can be configured to extract EEG, ECG, and EMG signals and draws 20μA from 3V. AC coupling of chopped amplifiers results in an input-referred noise of 60nV/radicHz and CMRR of 120dB at 1kHz. The immunity of the CMRR to electrode offset voltages is improved with an active input stage and 110dB CMRR is achieved at 100Hz with 50mV electrode offset
Keywords:
Amplifier Offset (computer science) Front and back ends Analog front-end Electrical engineering Computer science Input offset voltage Voltage Electronic engineering Electrode Operational amplifier Engineering Physics CMOS
Metrics
56
Cited By
3.74
FWCI (Field Weighted Citation Impact)
32
Refs
0.93
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Is in top 1%
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Citation History
Topics
Analog and Mixed-Signal Circuit Design
Physical Sciences → Engineering → Biomedical Engineering
Neuroscience and Neural Engineering
Life Sciences → Neuroscience → Cellular and Molecular Neuroscience
CCD and CMOS Imaging Sensors
Physical Sciences → Engineering → Electrical and Electronic Engineering
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