A CMOS imager designed and fabricated in a 0.18 μm digital CMOS technology operating from a 1.2 V power supply is reported. The imager uses second-order oversampled delta-sigma modulator analog to digital conversion at the column level to achieve high dynamic range for this low supply voltage. In experimental tests the imager was shown capable of measuring input light levels ranging over 5 orders of magnitude.

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Conference 27th European Solid-State Circuits Conference, ESSCIRC 2001
Citation
Fortier, J., Tarr, N.G, Swaminathan, A., & Plett, C. (2001). 1.2 v 0.18 μm CMOS imager with column-level oversampling. Presented at the 27th European Solid-State Circuits Conference, ESSCIRC 2001.