An ultra-low power current-mode CMOS image sensor with energy harvesting capability

Fang Tang, Yuan Cao, Amine Bermak

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

11 Citations (Scopus)

Abstract

In this paper, an energy harvesting CMOS image sensor with ultra-low power consumption is presented. The proposed active pixel sensor (APS) operates in current-mode and a 9-bit flash series current-mode A/D converter unit together with its peripheral control circuitry are all integrated on chip. A power consumption as low as 84pW/frame per pixel is achieved by biasing the in-pixel transconductance amplifier in triode region and enabling the current-mode ADC only during the read-out phase. The imager can also be reconfigured into an energy harvesting mode, which can generate several micro watt power at K-lux illumination levels. The 128 x 96 array is fabricated in a 0.35μm technology. The total chip area is 8mm 2 and the pixel pitch is 21μm with a 39% fill-factor. Experimental results of the fabricated chip illustrate its proper operation in both image capture and energy harvesting modes.

Original languageEnglish
Title of host publicationESSCIRC 2010 - 36th European Solid State Circuits Conference
Pages126-129
Number of pages4
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event36th European Solid State Circuits Conference, ESSCIRC 2010 - Sevilla, Spain
Duration: 14 Sep 201016 Sep 2010

Other

Other36th European Solid State Circuits Conference, ESSCIRC 2010
CountrySpain
CitySevilla
Period14/9/1016/9/10

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Keywords

  • APS
  • CMOS imager
  • Current-mode
  • Low-power

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this

Tang, F., Cao, Y., & Bermak, A. (2010). An ultra-low power current-mode CMOS image sensor with energy harvesting capability. In ESSCIRC 2010 - 36th European Solid State Circuits Conference (pp. 126-129). [5619822] https://doi.org/10.1109/ESSCIRC.2010.5619822