A CMOS self-powered monolithic light direction sensor with SAR ADC

Hongjiang Song, Zhijian Lu, Tao Luo, Jennifer Blain Christen, Hongyi Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A light direction sensor, SAR ADC, and energy harvesting photodiodes are integrated on a single chip based fabricated in a 0.18 μm process. No external power supply is needed for the chip to operate. Micro-scale metal baffles create on-chip shadowing for sensing light direction. The frequency of the SAR ADC automatically varies adapting to the harvested power. A current compensation circuit is presented to improve the precision to 7 ENOB. In addition, the chip works when solar intensity is greater than 45 mW/cm2.

Original languageEnglish (US)
Title of host publicationInternational System on Chip Conference
PublisherIEEE Computer Society
Pages58-62
Number of pages5
ISBN (Print)9781479933785
DOIs
StatePublished - Nov 5 2014
Event27th IEEE International System on Chip Conference, SOCC 2014 - Las Vegas, United States
Duration: Sep 2 2014Sep 5 2014

Other

Other27th IEEE International System on Chip Conference, SOCC 2014
CountryUnited States
CityLas Vegas
Period9/2/149/5/14

Fingerprint

Energy harvesting
Sensors
Photodiodes
Networks (circuits)
Metals
Compensation and Redress

Keywords

  • Light Direction Detection
  • Photo Sensor
  • SAR ADC
  • Self-Powered

ASJC Scopus subject areas

  • Hardware and Architecture
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

Song, H., Lu, Z., Luo, T., Blain Christen, J., & Wang, H. (2014). A CMOS self-powered monolithic light direction sensor with SAR ADC. In International System on Chip Conference (pp. 58-62). [6948900] IEEE Computer Society. https://doi.org/10.1109/SOCC.2014.6948900

A CMOS self-powered monolithic light direction sensor with SAR ADC. / Song, Hongjiang; Lu, Zhijian; Luo, Tao; Blain Christen, Jennifer; Wang, Hongyi.

International System on Chip Conference. IEEE Computer Society, 2014. p. 58-62 6948900.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Song, H, Lu, Z, Luo, T, Blain Christen, J & Wang, H 2014, A CMOS self-powered monolithic light direction sensor with SAR ADC. in International System on Chip Conference., 6948900, IEEE Computer Society, pp. 58-62, 27th IEEE International System on Chip Conference, SOCC 2014, Las Vegas, United States, 9/2/14. https://doi.org/10.1109/SOCC.2014.6948900
Song H, Lu Z, Luo T, Blain Christen J, Wang H. A CMOS self-powered monolithic light direction sensor with SAR ADC. In International System on Chip Conference. IEEE Computer Society. 2014. p. 58-62. 6948900 https://doi.org/10.1109/SOCC.2014.6948900
Song, Hongjiang ; Lu, Zhijian ; Luo, Tao ; Blain Christen, Jennifer ; Wang, Hongyi. / A CMOS self-powered monolithic light direction sensor with SAR ADC. International System on Chip Conference. IEEE Computer Society, 2014. pp. 58-62
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