Friday, May 26, 2017

Dual-CDS Evaluation

Journal of Semiconductor Technology and Science publishes a paper "Design and Evaluation of a CMOS Image Sensor with Dual-CDS and Column-parallel SS-ADCs" by Bu-Yong Um, Jong-Ryul Kim, Sang-Hoon Kim, Jae-Hoon Lee, Jimin Cheon, Jaehyuk Choi, and Jung-Hoon Chun from Sungkyunkwan University, Suwon, Korea and Kumoh National Institute of Technology, Gumi, Korea. The paper compares Sony-style analog-digital CDS (Exmor) with few other alternatives (seem randomly chosen). No surprises, Sony-style CDS comes on top in terms of column FPN:


  1. I know hwat CDS is, but What does dual CDS mean?

    1. Actually, dual CDS is not a commonly accepted term. In case of ramp ADC, it means a comparator auto-zero in analog domain combined with a digital CDS, such as up-down counter.


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