— “What is an ADC?”
The question – at first glance seeming like a trivial entry-level question (which is also welcome here in case you wonder) – turned out to have a lot of scientific depth and potential. Michiel continues:
“There can probably be some consensus on a short answer: “Something to convert an analog input into a digital output”.
How about a long answer? Who would like to share his opinion?
– Is a standard digital flip-flop in fact a very low power 1-bit ADC?
– Is it okay to use external calibration to improve an ADC’s accuracy? And if a PC performs the actual correction, does that make the PC part of the ADC?
References & supplies
– Is 0 dB power supply rejection sufficient? 10 dB? 50 dB?
– How many reference voltages can I use? I would like 2^N of them!
– Is it okay to use a reference clock? At a higher frequency than the actual sample rate?”
As I understand Michiel’s question, it is about the limits of what we would even consider calling “an ADC“, and also what constitutes a “complete ADC“. Interesting indeed! What are those limits according to you? Is the calibration PC part of the ADC? Is a flip-flop a 1-b ADC? Share your wisdom and opinions with the rest of us!