We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
High Dynamic Range Photocurrent Sensory Circuit with a Multi-Transistor Background Light Cancellation Loop for Photoplethysmography Sensing.
- Authors
Atef, Mohamed; Hassan, Osman; Awwad, Falah; Khan, Moien A. B.
- Abstract
In this article, we present a new photocurrent sensory circuit with a three-transistor background light cancellation. We describe our innovative photocurrent sensor-based blood pressure measuring device using a resistor-based current-to-voltage converter with a background light cancellation (BLC) loop. The photocurrent sensor is implemented using 0.35 μm standard CMOS technology and has zero average power consumption. The post-layout simulation for the photocurrent sensor shows a 1.3 MΩ transimpedance gain, a referred input noise current of 11 pA, and can reject a DC photocurrent up to 200 μA. This high DC rejection has been achieved due to the newly proposed multi-transistor BLC loop integrated with the sensor.
- Subjects
PHOTOPLETHYSMOGRAPHY; BLOOD pressure; VOLTAGE-frequency converters; TRANSISTORS; CONVERTERS (Electronics)
- Publication
Electronics (2079-9292), 2021, Vol 10, Issue 22, p2769
- ISSN
2079-9292
- Publication type
Article
- DOI
10.3390/electronics10222769