What's the current consumption of the low power comparator really?

[Anders Andersson]

While trying to find out a realistic maximum power consumption target I was searching for the power consumption of the LPCOMP comparator. I've seen a few claims about 0.5 µA here in the forum but the only reference I could find in the documentation was this table:

ICOMP,LP	COMP enabled, low power mode					30.1		µA
ICOMP,NORM	COMP enabled, normal mode					31.8		µA

Now, I don't think that a reduction from 31.8 to 30.1 mandates calling it "low power"! I suspect that table does not mean LPCOMP but rather the regular COMP in some special mode?

I also found this unanswered post claiming that it takes 20 µA in practice.

Is the LPCOMP power consumption actually stated anywhere?

[bjorn-spockeli]

The table you are referring to is for the COMP peripheral, which is not the Low Power Comparator (LPCOMP), 

The LPCOMP in the NRF52840 is identical to the one in the nRF52832, so iexpect it to be the same, i.e. 

LPCOMP electrical spec lists 0.5uA typical consumption to run the LPCOMP.

Best regards

Bjørn