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- Shin, Se-Un
- PICTUS Lab.
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A 1.74.12 mm3 Fully Integrated pH Sensor for Implantable Applications using Differential Sensing and Drift-Compensation
- Author(s)
- Kang, Taewook, Lee, Inhee, Oh, Sechang, Jang, Taekwang, Kim, Yejoong, Ahn, Hyochan, Kim, Gyouho, Shin, Se-Un, Jeong, Seokhyeon, Sylvester, Dennis, Blaauw, David
- Issued Date
- 2019-06-13
- Citation
- IEEE Symposium on VLSI Circuits, pp.C310 - C311
- Abstract
- This paper presents a 1.7 × 4.1 × 2 mm3 pH sensor that is a fully integrated, stand-alone and implantable system. Instead of a bulky cm size Ag/AgCl electrode, we use a mm-size integrated platinum electrode, and differential sensing using ISFET and REFET pair to compensate for unstable fluid potential. We also propose a drift compensation technique in which the leakage from the source and drain through the gate oxide is canceled, reducing drift > 100 × . © 2019 JSAP.
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- ISSN
- 0000-0000
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