101questions
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Some auto-zeroing techniques suppress 1/f noise as well. In fact diffrences betweel auto-zero, correlated double sampling and chopper stabilizer are somewhat blurry, the concepts are quite similar. Generally, consider yourself lucky if you manage to improve 1/f noise by a factor of 5 with these techniques. Other than that use large area devices, avoid pocket implant mos, if you can. Some might recommend to avoid subthreshold devices, while some others might disagree. There are also black magic techniques, like gated bias, but they are not in the model, so only silicon would tell how they are effective.
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