shunt resistor to measure DC current in the KM

[jun1]

Hi.

We have examined AC current measurement using CT and meter library in kinetic M series. This time, we are considering using a shunt resistor to measure DC current in the KM series. So the question is. (1) Can I use Delta-Sigma AD? (Is it affected by LPF etc. in the built-in hardware?) (2) How to use digital filter library Please tell me any notes or application notes.

Thank you.

[Alexis_A · Accepted solution]

Hi,

The ADC in this MCU is robust so you shouldn't have problems with it and I will suggest to check to following application note:

Filter-Based Algorithm for Metering Applications

It also has some example that you can download from here.

Best Regards,

Alexis Andalon