Question on analogue input (ADC) performance
I am doing some tests on a metawear using one of the analogue inputs (ADC).
When checking the specification (metawearPPSv0.6.pdf) I read about that there seems to be different modes for the ADC, 8-bit mode, 9 bit mode and 10 bit mode, and I am especially interested in the 10 bit mode. The 10-bit mode is the one used, right?
Assuming 10-bit mode is used, I am interested in the accuracy that can be achieved. Could you explain a bit on this?
My understanding is that 10 bits (2^10=1024) in a 3V system correspond to 3V/1024=30mV approximately, and I try to understand the specification points in the document. Please explain.
Another related question is if there are any features in the FW for averaging samples from the ADC in order to improve accuracy?
(If possible I would like to achieve around 20mV accuracy in a 3V system, and I don't know if this is feasible.)
Thanks in advance!