Publication

A correlated multiple sampling passive switched capacitor circuit for low light CMOS image sensors

Christian Enz, Assim Boukhayma
2015
Conference Papers

Abstract

After a brief review of the principle of correlated multiple sampling (CMS) and its implementation techniques in CIS readout chains, a simple CMS passive circuit that (i) requires no additional active circuitry, (ii) has no impact on the output dynamic range and (iii) does not need multiple analog-to-digital conversions (faster) is presented. The proposed circuit uses n switched capacitors to perform a CMS on 2n samples. It is validated using transient noise simulations on a CIS readout chain based on a 4T pixel, designed with a 180nm CIS process. For a line readout time of 35 μs and a column amplifier bandwidth of 256 kHz, the proposed circuit reduces the input-referred noise as expected by an ideal CMS.

Official source

https://infoscience.epfl.ch/entities/publication/63267ec9-3b1d-4387-94bb-9aa648d45374

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Christian Enz, Assim Boukhayma
2015
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/63267ec9-3b1d-4387-94bb-9aa648d45374

About this result

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