A 2ND-order continuous-time delta-sigma modulator for photoplethysmography analog front-end

Eka Fitrah Pribadi, Rajeev Kumar Pandey, Paul C.P. Chao*

*Corresponding author for this work

研究成果: Conference contribution同行評審

摘要

A brief presents a 2nd order continuous-time delta-sigma modulator (CT-DSM) using a low pass filter to reduce the slew rate requirement of the output swing of the first integrator. By adding the low pass filter, the desired transfer function of the CT-DSM is altered. Thus a feed-forward based compensation circuit is introduced to transform the altered transfer function to the original condition. The CT-DSM is designed with a bandwidth of 100 Hz to satisfy the requirement of photoplethysmogram (PPG) detection. The CT-DSM is simulated using CMOS 180 nm technology with the layout area 460 µm x 460 µm. The circuit uses a 1.8 V supply voltage and consumes 35.61 µW. The signal-to-noise ratio of the CT-DSM is 101.2 dB, while the SFDR is 99.1 dB.

原文English
主出版物標題ASME 2020 29th Conference on Information Storage and Processing Systems, ISPS 2020
發行者American Society of Mechanical Engineers (ASME)
ISBN(電子)9780791883600
DOIs
出版狀態Published - 2020
事件ASME 2020 29th Conference on Information Storage and Processing Systems, ISPS 2020 - Virtual, Online
持續時間: 24 六月 202025 六月 2020

出版系列

名字ASME 2020 29th Conference on Information Storage and Processing Systems, ISPS 2020

Conference

ConferenceASME 2020 29th Conference on Information Storage and Processing Systems, ISPS 2020
城市Virtual, Online
期間24/06/2025/06/20

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