Article ; Online: A 107.6 dB-DR Three-Step Incremental ADC for Motion-Tolerate Biopotential Signals Recording.
IEEE transactions on biomedical circuits and systems
2024 Volume 18, Issue 1, Page(s) 111–122
Abstract: This article describes a power-efficient, high dynamic range (DR) incremental ADC (IADC) for wearable biopotential signals recording, where DC and low-frequency disturbances such as electrode offset, 50/60 Hz interference and motion artifact must be ... ...
| Abstract | This article describes a power-efficient, high dynamic range (DR) incremental ADC (IADC) for wearable biopotential signals recording, where DC and low-frequency disturbances such as electrode offset, 50/60 Hz interference and motion artifact must be tolerated. To achieve a wide DR, the IADC performs a three-step conversion by combining zoom-SAR and extended counting (EC) on top of a second-order incremental delta-sigma modulator (ΔΣM). The hybrid architecture notably reduces the oversampling ratio (OSR) with respect to conventional incremental ΔΣMs, while using the EC further improves the Signal-to-Noise-and-Distortion Ratio (SNDR) by 7.4 to 25.6 dB. Fabricated in a 0.18-μm CMOS technology, the IADC achieves 107.6-dB DR, 104.9-dB peak SNR, and 99.3-dB peak SNDR at 2 kS/s while dissipating 130 μW from 1.8-V (analog) / 1.2-V (digital) supply. This translates to a highly competitive FoM |
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| MeSH term(s) | Equipment Design ; Signal Processing, Computer-Assisted ; Electrocardiography ; Amplifiers, Electronic ; Motion |
| Language | English |
| Publishing date | 2024-01-26 |
| Publishing country | United States |
| Document type | Journal Article |
| ISSN | 1940-9990 |
| ISSN (online) | 1940-9990 |
| DOI | 10.1109/TBCAS.2023.3312976 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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