Variable self-powered light detection CMOS chip with real-time adaptive tracking digital output based on a novel on-chip sensor

Hong Yi Wang, Youyou Fan, Zhijian Lu, Tao Luo, Houqiang Fu, Hongjiang Song, Yuji Zhao, Jennifer Blain Christen

Research output: Contribution to journalArticle

Abstract

This paper provides a solution for a self-powered light direction detection with digitized output. Light direction sensors, energy harvesting photodiodes, real-time adaptive tracking digital output unit and other necessary circuits are integrated on a single chip based on a standard 0.18 µm CMOS process. Light direction sensors proposed have an accuracy of 1.8 degree over a 120 degree range. In order to improve the accuracy, a compensation circuit is presented for photodiodes’ forward currents. The actual measurement precision of output is approximately 7 ENOB. Besides that, an adaptive under voltage protection circuit is designed for variable supply power which may undulate with temperature and process.

Original languageEnglish (US)
Pages (from-to)24138-24147
Number of pages10
JournalOptics Express
Volume25
Issue number20
DOIs
StatePublished - Oct 2 2017

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CMOS
chips
photodiodes
output
sensors
circuit protection
power supplies
integrated circuits
electric potential
temperature
energy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Variable self-powered light detection CMOS chip with real-time adaptive tracking digital output based on a novel on-chip sensor. / Wang, Hong Yi; Fan, Youyou; Lu, Zhijian; Luo, Tao; Fu, Houqiang; Song, Hongjiang; Zhao, Yuji; Blain Christen, Jennifer.

In: Optics Express, Vol. 25, No. 20, 02.10.2017, p. 24138-24147.

Research output: Contribution to journalArticle

Wang, Hong Yi ; Fan, Youyou ; Lu, Zhijian ; Luo, Tao ; Fu, Houqiang ; Song, Hongjiang ; Zhao, Yuji ; Blain Christen, Jennifer. / Variable self-powered light detection CMOS chip with real-time adaptive tracking digital output based on a novel on-chip sensor. In: Optics Express. 2017 ; Vol. 25, No. 20. pp. 24138-24147.
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