Hello,

I got a response from Espressif: the issue should be fixed in the latest version of the chip (v0.2)
https://docs.espressif.com/projects/esp ... of-sar-adc

Thanks,

from the tests I have done, it seems that the resolution of this ADC converter is actually 8 bit, which is not sufficient for my application

Hello,

I am experiencing the same issue, did you manage to solve/work around this problem?

I have done some testing with fixed input values and the results do not show the granularity expected from a 12 bit output.
For example, the atatched log is from a fixed signal that is supposed to convert to ...