Low-power temperature-independent ambient light sensor

S. I. Cho, J. H. Park, S. I. Lim, S. Kim, K. H. Baek

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Presented is an ambient light sensor (ALS) for portable electronic devices. The proposed ALS employs illuminance-dependent resolution adjustment and dark current compensation auxiliary circuits to consume low power, occupy small area, as well as achieve temperature-independent linearity. The ALS can convert illuminance of up to 16Klx to digital data without temperature-dependent dark current disturbance, while consuming a maximum 75 μA current and occupying only 640 × 420 μm area, including a 120 × 120 μm photodiode.

Original languageEnglish
Pages (from-to)981-983
Number of pages3
JournalElectronics Letters
Issue number17
Publication statusPublished - 2011 Aug 18

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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