A 0.6V 0.015mm2 Time-Based Biomedical Readout for Ambulatory Applications in 40nm CMOS

📋 论文概要

该论文提出一种用于可穿戴医疗应用的0.6V低电压、小面积（0.015mm²）基于时间的生物医学读出电路，采用40nm CMOS工艺。它通过时间域处理技术解决了低电压下模拟前端动态范围受限的问题，适用于心电信号检测等场景。

💡 主要创新点

• 采用基于时间的读出架构，在0.6V低电压下实现大动态范围，克服了传统模拟前端在先进工艺节点下的电压裕度限制。
• 在40nm CMOS工艺中实现了0.015mm²的超小面积，适合低成本、便携式医疗SoC集成。
• 通过时间域量化替代电压域量化，有效降低功耗和面积，同时满足运动伪影下的高动态需求。

🏷 关键词

📄 原文摘要

applications in personal healthcare require sensor SoCs with low area, low power and a high dynamic range. Design in small-scale technologies can reduce the power and area of digital processing. However, due to the accompanied reduced supply voltage (VDD), the analog front-end (AFE) faces significant challenges in maintaining a large dynamic range in a power- and area-efficient manner [1-3]. A large dynamic range is important to handle the large signals expected during motion [1]. In this paper, we demonstrate a 0.6V ECG readout in 40nm technology for ambulatory applications. It can handle up to 40mVpp ACsignal and up to 300mV DC-electrode offset while consuming 3.3μW power and 0.015mm2 area. These results are achieved by implementing a time-domain-based

👥 作者与机构

Rachit Mohan1,2, Samira Zaliasl3, Georges Gielen1,2,

Chris Van Hoof1,2, Nick Van Helleputte1, Refet Firat Yazicioglu1 imec, Leuven, Belgium, 2KU Leuven, Leuven, Belgium, Holst Centre / imec, Eindhoven, The Netherlands 1 3 Emerging