Limit Event monitoring SAADC

RE: Limit Event monitoring SAADC

AimHigh — Tue, 11 Feb 2020 12:55:53 GMT

Thank you

RE: Limit Event monitoring SAADC

haakonsh — Tue, 11 Feb 2020 12:38:23 GMT

I believe you can use the COMP with an external voltage reference (differential mode) and not be affected by the errata.

The LPCOMP is not affected by the faulty current source of the COMP.

RE: Limit Event monitoring SAADC

AimHigh — Tue, 11 Feb 2020 11:55:19 GMT

Hi,

Ok,

But with LPCOM or COMP is it not having anomaly. That means it is unstable over the temperature due to I_Source is not stable?

And Is it required to trigger the LPCOMP or COMP module at regular intervals?

RE: Limit Event monitoring SAADC

haakonsh — Tue, 11 Feb 2020 11:51:25 GMT

From Event monitoring using limits:
Appropriate events are generated whenever the conversion results (sampled input signals) are outside of the two defined limits.

This means that you do need trigger sampling at regular intervals.

Alternatively you can use the LPCOMP — Low power comparator or COMP — Comparator.