ADC Input Noise: The Good, The Bad, and The Ugly. Is No Noise Good Noise?

All analog-to-digital converters (ADCs) have a certain amount of input-referred noise—modeled as a noise source connected in series with the input of a noise-free ADC. In most cases, less input noise is better; however there are some instances where input noise can actually be helpful in achieving higher resolution. Read this article to learn how some noise can be good noise.

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