Thank you for such an excellent video! I was diving into tons of textbook pages to find the main idea of this ADC and could not catch the crux of it. Then I spent just an hour on this video and everything is crystal clear!!
Thanks for your comment, shazaduh4ever. In addition to this video, Bonnie Baker wrote a four-part technical article series related to this topic that you might find of interest. We’re unable to provide direct links to those articles here, but you can find them on the EDN website if you search for “Delta-sigma ADCs in a nutshell”.
Can someone simply explain the high level abstract functional difference between the output of a delta sigma ADC and let's say a 10 bit successive approximation ADC with a similar software averaging routine applied to the white noise? I'm specifically interested in understanding the difference within the context of DC signal measurements. From my beginner's perspective, I get the impression that a delta sigma converter is intended more for the frequency domain?
The higher sample rate of the sigma-delta allows a lower order anti-aliasing filter on the input, thus less ripple. Though I’d assume that filtering still needs to be made up for in the pre-decimation filter, but digital is cheap and fast. In the end, that’s all what it boils down to; replacing precision analog with cheap and fast digital. Dirt cheap audio gear wouldn’t exist if only precision 16/24 bit converters were available.
what an awesome video. the world needs more of this. is she single? can we do a partnership between texas instruments and pepes world? it might help your company get some exposure.
