A 32-bit Two-step Incremental-ADC with 125.6 dB Dynamic-range for Non-invasive BCI Applications

被引：1
作者：
Gao, Zhenghang [1 ]
Wang, Shiwei [2 ]
Chen, Mingyi [3 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Dept Micro Nano Elect, Shanghai, Peoples R China
[2] Univ Edinburgh, Sch Engn, Edinburgh, Midlothian, Scotland
[3] Shanghai Jiao Tong Univ, Natl Key Lab Adv Micro & Nano Mfg Technol, Shanghai, Peoples R China
来源：
2024 IEEE THE 20TH ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS, APCCAS 2024 | 2024年
基金：
中国国家自然科学基金;
关键词：
incremental analog-to-digital converter (IADC); electrophysiological signal acquisition front-ends; signal-to-noise ratio (SNR); TO-DIGITAL CONVERTER;
D O I：
10.1109/APCCAS62602.2024.10808500
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This article presents a 32-bit two-step incremental analog-to-digital converter (IADC) for non-invasive Brian-computer-interface (BCI). The prototype has been implemented with 180 nm BCD process at a supply voltage of 5V, including a low-noise front-end PGA followed by an IADC. The simulation results shows the IADC achieves a signal-to-noise ratio (SNR) of 124.9 dB and a dynamic range (DR) of 125.6 dB, while consuming 2.95 mW of power, leading to a competitive figure-of-merit (FoMS,DR) of 177.9 dB. The two-step architecture enables significant DR extension as well as power and area reduction, facilitating its widespread applications to multi-channel and high-accuracy wearable EEG acquisition with advanced tolerance to motion-artifacts.
引用
收藏
页码：566 / 570
页数：5
相关论文
共 19 条
[1]   A High-Resolution Low-Power Incremental ΣΔ ADC With Extended Range for Biosensor Arrays [J].
Agah, Ali ;
Vleugels, Katelijn ;
Griffin, Peter B. ;
Ronaghi, Mostafa ;
Plummer, James D. ;
Wooley, Bruce A. .
IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2010, 45 (06) :1099-1110
[2]  
Chae Y, 2013, ISSCC DIG TECH PAP I, V56, P276, DOI 10.1109/ISSCC.2013.6487733
[3]   An 80-mVpp Linear-Input Range, 1.6-GΩ Input Impedance, Low-Power Chopper Amplifier for Closed-Loop Neural Recording That Is Tolerant to 650-mVpp Common-Mode Interference [J].
Chandrakumar, Hariprasad ;
Markovic, Dejan .
IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2017, 52 (11) :2811-2828
[4]   Incremental Analog-to-Digital Converters for High-Resolution Energy-Efficient Sensor Interfaces [J].
Chen, Chia-Hung ;
He, Tao ;
Zhang, Yi ;
Temes, Gabor C. .
IEEE JOURNAL ON EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS, 2015, 5 (04) :612-623
[5]   A Micro-Power Two-Step Incremental Analog-to-Digital Converter [J].
Chen, Chia-Hung ;
Zhang, Yi ;
He, Tao ;
Chiang, Patrick Y. ;
Temes, Gabor C. .
IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2015, 50 (08) :1796-1808
[6]   A 124 dB dynamic range sigma-delta modulator applied to non-invasive EEG acquisition using chopper-modulated input-scaling-down technique [J].
Chen, Kaiquan ;
Chen, Mingyi ;
Cheng, Longlong ;
Qi, Liang ;
Wang, Guoxing ;
Lian, Yong .
SCIENCE CHINA-INFORMATION SCIENCES, 2022, 65 (04)
[7]   A 400 GΩ Input-Impedance Active Electrode for Non-Contact Capacitively Coupled ECG Acquisition With Large Linear-Input-Range and High CM-Interference-Tolerance [J].
Chen, Mingyi ;
Chun, Ho Sung ;
Castro, Ivan Dario ;
Torfs, Tom ;
Lin, Qiuyang ;
van Hoof, Chris ;
Wang, Guoxing ;
Lian, Yong ;
van Helleputte, Nick .
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS, 2019, 13 (02) :376-386
[8]   A Multi-Step Incremental Analog-to-Digital Converter With a Single Opamp and Two-Capacitor SAR Extended Counting [J].
Kuo, Shih-Che ;
Huang, Jia-Sheng ;
Huang, Yu-Cheng ;
Kao, Chia-Wei ;
Hsu, Che-Wei ;
Chen, Chia-Hung .
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2021, 68 (07) :2890-2899
[9]   Theory and applications of incremental ΔΣ converters [J].
Márkus, J ;
Silva, J ;
Temes, GC .
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2004, 51 (04) :678-690
[10]  
Qiang Li., 2007, SOLID STATE CIRCUITS, P288
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