A 11GΩ-Input-Impedance 700mVpp-Input-Signal-Range 87dB-SNDR Direct-Digitization AFE for Wearable EEG Recording

被引：28

作者：

Li, Yuying ^{[1
]}

Li, Yijie ^{[1
]}

Li, Hao ^{[1
]}

Hong, Zhiliang ^{[1
]}

Xu, Jiawei ^{[1
]}

机构：

[1] Fudan Univ, State Key Lab Integrated Chips & Syst, Shanghai, Peoples R China

来源：

IEEE 49TH EUROPEAN SOLID STATE CIRCUITS CONFERENCE, ESSCIRC 2023 | 2023年

基金：

国家重点研发计划;

关键词：

D O I：

10.1109/ESSCIRC59616.2023.10268812

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper describes a wide dynamic range (DR) and high input-impedance direct-digitization analog front-end (AFE) for non-invasive EEG recording. The AFE utilizes a second-order 5-bit Delta-Delta Sigma ADC to shape low-frequency disturbances, such as DC electrode offset, power-line interference, and motion artifact while retaining high accuracy. Furthermore, the AFE adopts a pseudo-differential non-inverting amplifier and a C-DAC to achieve high input impedance in conjunction with high linearity. Fabricated in a standard 0.18 mu m CMOS process, the AFE achieves 11G Omega input impedance, 700mV(pp) input range, 95.3dB-DR and 87dB-SNDR while consuming 88.4 mu W from a 1.2V supply.

引用

页码：1 / 4

页数：4

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