Delta-sigma ADCs in a nutshell, part 4: noise versus data rate

摘要

This article is the last in a brief overview of the inner workings of delta-sigma ADCs. You have seen how the modulator operates in the time and the frequency domains and how it shapes the conversion-quantization noise into higher frequencies. The modulator implements an oversampling system that has an integrator and negative feedback. You've also read about the inner workings of the digital/decimator filter.