A 2.67GΩ 454nVrms 14.9μW Dry-Electrode Enabled ECG-on-Chip with Arrhythmia Detection

Xu, Xinzi; Suo, Yanxing; Zhou, Peiyi; Xiao, Han; Cai, Qiao; Wang, Guoxing; Lian, Yong; Zhao, Yang

doi:10.1109/cicc57935.2023.10121299

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…[102] With the help of self-calibration, PFL allows for an impressive 2.67 GΩ input impedance with 0.405 mm 2 silicon area and 2.8 μA current cost. [103] Leveraging a dual feedback loop PFL in combination with self-calibration enhances the input impedance to 15 GΩ@10 Hz at 0.75 mm 2 area and 3.63 μA current. [104] Considering that the input impedance of implantable high-density electrodes approximates 100 kΩ@10 kHz, [105,106] IIP exceeds 10 MΩ@10 kHz and is sufficient to prevent over 1% signal attenuation.…”

Section: Input Impedance Boostingmentioning

confidence: 99%

“…A positive feedback loop (PFL) can boost the input impedance over 80 MΩ (Figure 7G) as it provides compensation current for the input regardless of the input capacitance value [102] . With the help of self‐calibration, PFL allows for an impressive 2.67 GΩ input impedance with 0.405 mm 2 silicon area and 2.8 μA current cost [103] . Leveraging a dual feedback loop PFL in combination with self‐calibration enhances the input impedance to 15 GΩ@10 Hz at 0.75 mm 2 area and 3.63 μA current [104] .…”

Section: High‐density Neural Recording Chipsmentioning

confidence: 99%

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High‐density implantable neural electrodes and chips for massive neural recordings

Wang,

Suo,

Wang

et al. 2024

Brain-X

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High‐density neural recordings with superior spatiotemporal resolution powerfully unveil cellular‐scale neural communication, showing great promise in neural science, translational medicine, and clinical applications. To achieve such, many design and fabrication innovations enhanced the electrode, chip, or both for biocompatibility improvement, electrical performance upgrade, and size miniaturization, offering several thousands of recording sites. However, an enormous gap exists along the trajectory toward billions of recording sites for brain scale resolution, posing many more design challenges. This review tries to find possible insight into mitigating the gap by discussing the latest progress in high‐density electrodes and chips for neural recordings. It emphasizes the design, fabrication, bonding techniques, and in vivo performance optimization of high‐density electrodes. It discusses the promising opportunities for circuit‐level and architecture‐level multi‐channel chip design innovations. We expect that joint effort and close collaboration between high‐density electrodes and chips will pave the way to high‐resolution neural recording tools supporting cutting‐edge neuroscience discoveries and applications.

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