The voltage across a PN junction has a logarithmic relationship to the current through it, allowing this optical sensor circuit to mimic the human eye's sensitivity to changes in light level over a wide range of ambient levels

AuthorsSteven P. Hendrix
Main DocumentArticle «Light-Sensing Circuit Yields Human-Like Dynamic Range»
DescriptionFigure 1
File Format / SizePDF / 23 Kb
Document LanguageEnglish

The voltage across a PN junction has a logarithmic relationship to the current through it, allowing this optical sensor circuit to mimic the human eye's sensitivity to changes in light level over a wide range of ambient levels

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