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Real-time monitoring of multimodal vital signs including electrocardiography (ECG) and photoplethysmography (PPG) on wearable devices are attracting increasing interests. Motion artifacts, ambient light interference and sensor-skin contact variability affect signal quality significantly, demanding a multi-channel sensor interface chip with high dynamic range yet low power. A PPG/ECG interface chip is proposed for robust signal optimization. Time-division multiplexing, ambient double sampling and DC current compensation together enhance the dynamic range. Fabricated in a 0.18 μm process, the chip features a 5.63-pArms direct digitized input-referred noise for PPG readout and 365-nVrms for ECG. A cross-scale dynamic range of 133 dB is achieved, providing saturation-free usage for sport wearable devices such as smart watches and rings.

","bibtexUrl_en":"https://www.qk.sjtu.edu.cn/ics/EN/article/getTxtFile.do?fileType=BibTeX&id=49235","abstractUrl_cn":"https://www.qk.sjtu.edu.cn/ics/CN/10.23919/ICS.2024.3513261","juanUrl_cn":"https://www.qk.sjtu.edu.cn/ics/CN/Y2024","lanMu_en":"Original article","qiUrl_en":"//www.sghhindu.com/www.qk/ics/EN/Y2024/V1/I4","risUrl_en":"https://www.qk.sjtu.edu.cn/ics/EN/article/getTxtFile.do?fileType=Ris&id=49235","title_en":"A Multi-Channel 133-dB DR PPG/ECG SoC for Smart Wearable Devices","revised":"2024-11-28","hasPdf":"true"},"authorList_en":[{"deceased":false,"xref":"1, 2","orcid":"0009-0005-3443-0310","name_cn":"SHIHONG ZHOU","xref_en":"1, 2","name_en":"SHIHONG ZHOU"},{"deceased":false,"xref":"1","orcid":"0009-0008-0601-2412","name_cn":"XIN WANG","xref_en":"1","name_en":"XIN WANG"},{"deceased":false,"xref":"1","orcid":"0000-0002-0307-609X","name_cn":"YANXING SUO","xref_en":"1","name_en":"YANXING SUO"},{"deceased":false,"xref":"1","name_cn":"XIAO HAN","xref_en":"1","name_en":"XIAO HAN"},{"deceased":false,"xref":"1, 2","orcid":"0000-0002-0235-1475","name_cn":"GUOXING WANG","xref_en":"1, 2","name_en":"GUOXING WANG"},{"deceased":false,"xref":"1","orcid":"0000-0002-2236-6092","name_cn":"YANG ZHAO","email":"yangzhao90@sjtu.edu.cn","xref_en":"1","name_en":"YANG ZHAO"}]}">

A Multi-Channel 133-dB DR PPG/ECG SoC for Smart Wearable Devices

SHIHONG ZHOU, XIN WANG, YANXING SUO, XIAO HAN, GUOXING WANG, YANG ZHAO

Integrated Circuits and Systems››2024, Vol. 1››Issue (4): 239-246.

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Integrated Circuits and Systems ›› 2024, Vol. 1 ›› Issue (4) : 239-246. DOI: 10.23919/ICS.2024.3513261
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A Multi-Channel 133-dB DR PPG/ECG SoC for Smart Wearable Devices

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{{article.zuoZheEn_L}}.{{article.title_en}}[J]. {{journal.qiKanMingCheng_EN}}, 2024, 1(4): 239-246 https://doi.org/10.23919/ICS.2024.3513261

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