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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:

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2 comments:

  1. AnonymousMay 29, 2017 at 12:53 PM

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

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    Replies
    1. Vladimir KoifmanMay 29, 2017 at 1:01 PM

      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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