{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:12:22Z","timestamp":1760145142104,"version":"build-2065373602"},"reference-count":29,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2024,6,24]],"date-time":"2024-06-24T00:00:00Z","timestamp":1719187200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"KU-UAEU Joint Research Program Award No. KU-UAEU-2023-004","award":["G00004680"],"award-info":[{"award-number":["G00004680"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This study presents an integrated analog front-end (AFE) tailored for photoplethysmography (PPG) sensing. The AFE module introduces a novel transimpedance amplifier (TIA) that incorporates capacitive feedback techniques alongside common drain feedback (CDF) TIA. The unique TIA topology achieves both high gain and high sensitivity while maintaining low power consumption. The resultant PPG sensor module demonstrates impressive specifications, including an input noise current of 4.81 pA\/sqrt Hz, a transimpedance gain of 18.43 M\u2126, and a power consumption of 68 \u00b5W. Furthermore, the sensory system integrates an LED driver featuring automatic light control (ALC), which dynamically adjusts the LED power based on the strength of the received signal. Employing 0.35 \u00b5m CMOS technology, the AFE implementation occupies a compact footprint of 1.98 mm \u00d7 2.475 mm.<\/jats:p>","DOI":"10.3390\/s24134097","type":"journal-article","created":{"date-parts":[[2024,6,24]],"date-time":"2024-06-24T06:59:58Z","timestamp":1719212398000},"page":"4097","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["A Low-Power High-Sensitivity Photocurrent Sensory Circuit with Capacitive Feedback Transimpedance for Photoplethysmography Sensing"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7748-5742","authenticated-orcid":false,"given":"Neethu","family":"Mohan","sequence":"first","affiliation":[{"name":"Electrical and Communication Engineering Department, United Arab Emirates University, Al Ain 15551, United Arab Emirates"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6154-2143","authenticated-orcid":false,"given":"Falah","family":"Awwad","sequence":"additional","affiliation":[{"name":"Electrical and Communication Engineering Department, United Arab Emirates University, Al Ain 15551, United Arab Emirates"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nabil","family":"Albastaki","sequence":"additional","affiliation":[{"name":"Electrical and Communication Engineering Department, United Arab Emirates University, Al Ain 15551, United Arab Emirates"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3344-6127","authenticated-orcid":false,"given":"Mohamed","family":"Atef","sequence":"additional","affiliation":[{"name":"Electrical and Communication Engineering Department, United Arab Emirates University, Al Ain 15551, United Arab Emirates"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,6,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"122","DOI":"10.1016\/j.opelre.2018.02.007","article-title":"Selected optoelectronic sensors in medical applications","volume":"26","author":"Bielecki","year":"2018","journal-title":"Opto-Electron. 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