What you are looking for is a transformer. I don’t see any of those in the OPL. For selecting one I would look at digikey.
This link below is a shortlist of viable transformers that are rated for mains voltage… make sure you select your applicacble mains voltage 115 or 230… remember a higher rating will always work for a lower voltage.
https://www.digikey.com/short/jnhpwp
The next thing you need to figure out is what you want your winding ratio should be. Let’s take this one for example https://www.digikey.com/short/jnhz7q
It has a secondary voltage of 24V(series) this means if your mains voltage is at 115V then the voltage on your secondary coil will be 24V meaning your ratio is 4.8:1. If you have the parallel version, 12V(Parallel) this means you will get 12V for a mains voltage of 115.
Series connection
Parallel Connection
Parallel will get you higher current ratings vs higher voltage. However for your sensing application either method is valid. You will just size your resistor divider accordingly for your A2D full scale value.