22nm±0.95V CMOS OTA-C前端，50/60 Hz陷波，用于生物医学信号采集

2015 International Conference on Power and Advanced Control Engineering (ICPACE) Pub Date : 2015-09-24 DOI:10.1109/ICPACE.2015.7274961

Rishika Sinha, S. Khot, M. S. Ansari

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引用次数: 5

摘要

本文提出了一种用于生物医学应用的22nm CMOS技术模拟前端(AFE)。该电路设计用于低功耗和小尺寸实现，特别是电池供电的植入式设备，能够读取频率范围为0.01 Hz至300 Hz的生物医学信号，同时拒绝电源线频率为50/60Hz。它在OTA-C结构中采用运算跨导放大器(OTAs)实现陷波滤波器。所设计的OTA具有极低的跨导，可在1.069 nA/V至2.114 nA/V范围内进行编程。在电力线频率(50/60 Hz)处的陷波达到20 dB的衰减。在±0.95V供电时，整个AFE的功耗为11.34 nW。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A 22nm ±0.95V CMOS OTA-C front-end with 50/60 Hz notch for biomedical signal acquisition

This paper presents a 22 nm CMOS technology analog front-end (AFE) for biomedical applications. The circuit is designed for low power and small size implementations, especially for battery-powered implantable devices, and is capable of reading out biomedical signals in the range of 0.01 Hz to 300 Hz in frequency, while rejecting power-line frequency of 50/60Hz. It employs Operational Transconductance Amplifiers (OTAs) in an OTA-C structure to realize a notch filter. The OTA designed has a very low transconductance, which is programmable from 1.069 nA/V to 2.114 nA/V. The notch at power-line frequency (50/60 Hz) achieves an attenuation of 20 dB. The power consumption of the entire AFE was found to be 11.34 nW at ±0.95V supply.

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2015 International Conference on Power and Advanced Control Engineering (ICPACE)

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