ADC and time resolution

MrChips

Joined Oct 2, 2009
30,618
Conversion time will give you the minimum sampling period, that is, the time between samples cannot be shorter than 2us.
Your actual time resolution will depend on the inverse of your sampling rate. For example, if you sample at 50K sps your time resolution will be 20us.

On top of that you have to take into account something called "sampling jitter".
 

ErnieM

Joined Apr 24, 2011
8,377
If it takes my ADC 2us to convert a sample does that mean my time resolution on the data is also 2us??
Do you need to sample the signal before you convert it? Add that time.

Does your signal need time to stabilize after you switch to measure it? Add that time.

Does your micro need time to process the reading results before it can start another measurement? Add that time.

These are a few of the other things you may need to consider in getting your sampling rate.
 
Top