Dynamic-Range-Enhancement Techniques for Artifact-Tolerant Biopotential-Acquisition ICs

Yoontae Jung, Soon Jae Kweon, Taeju Lee, Kyeongwon Jeong, Sohmyung Ha, Minkyu Je

Research output: Contribution to journalArticlepeer-review


This brief reviews the principle and design of dynamic range (DR) enhancement techniques for artifact-tolerant biopotential-acquisition ICs. In order to record small input signals without being disturbed by large artifacts, which may arise from motion or stimulation, biopotential-acquisition ICs for wearable devices and bidirectional neural interfaces should have wide DR in addition to low noise and high power efficiency. This review discusses key features of DR enhancement techniques based on three topologies: (1) saturation-free instrumentation amplifier with analog-to-digital converter (ADC), (2) signal-to-noise-and-distortion ratio (SNDR) enhanced ADC, and (3) DR-enhanced ADC with moderate linearity, which are used in state-of-the-art artifact-tolerant biopotential-acquisition ICs.

Original languageEnglish (US)
Pages (from-to)3090-3095
Number of pages6
JournalIEEE Transactions on Circuits and Systems II: Express Briefs
Issue number7
StatePublished - Jul 1 2022


  • Dynamic range (DR)
  • ExG
  • Instrumentation amplifier (IA)
  • Linearity
  • Motion artifact
  • Neural recording
  • Noise
  • Signal-to-noise-and-distortion ratio (SNDR)
  • Stimulation artifact
  • δσ modulator

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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