From what I know, both techniques are able to reduce the effects of offset and flicker noise of opamps. What is the subtle difference of these two techniques? Thank you.
Re: About autozeroing and correlated doouble sampling techni
Correlated double sampling (CDS) is a particular case of auto-zeroing.
You can refer to this paper:
Enz, C.C.; Temes, G.C. ”Circuit techniques for reducing the effects of op-amp imperfections: autozeroing, correlated double sampling, and chopper stabilization” Proceedings of the IEEE Volume 84, Issue 11, Nov. 1996 Page(s):1584 - 1614