I am looking for an ADC for my project and there are a few features that I don't quite get. On TIs product selector. The default filters includes
SFDR. I assume they are important since but some of them have value some dont, so I assume its ADC-spefic (or maybe they did not just write it) not all ADC have them, being just initials makes it harder to search.
Here are others on which I need some advice:
Programable Gain Amplifier(PGA) - Assuming same sample speed, Which would be better a 16-bit ADC using internal gain or a 24-bit (or 32-bit) ADC that is using no gain. Gain also amplifies the noise but assuming the isolation is perfect, wouldn't the 16-bit with a gain of 2 or more be better to the 32-bit using no gain? Of course there is gain drift but at low gains it's not much.
Simultaneous or Multiplexed Sampling - Although this one is self explanatory, Isn't simultaneous sampling (for multiple channels) always better? Are there other notable reason why to choose multiplexed over simultaneous?
Here are 2 ADC that have very peculiar features about which I have no idea:
Those two interest me because what I plan to use my circuit is to read voltages from a current transducer so that I can get the current consumption of a mains line.