BackerShu
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Hello macaren,
I checked some paper about CDS. It can suppress 1/f noise to some extent, but cannot vanish the low frequency noise since sampling behavior will alias high frequency back to low frequency; Also, the white noise power is doubled since correlated double sampling essentially makes two measurements of the uncorrelated (white) signal.
You may want to check the following paper:
[1] J. M. Pimbley; and G.J Michon, “The output power spectrum produced by correlated double sampling,” IEEE Transactions on Circuits and Systems, vol. 38, no. 9, pp. 1086–1090, 1991.
Hope this helps.
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