RP2040 external Analog Reference

I would like to use an External analog reference for Xiao RP2040, but Iā€™m not sure how to make it work since I dont see any ARef pin. Any help to add a LM4040 board to RP2040 Xiao will be great :slight_smile: :slightly_smiling_face:

I hope this schematic can help you.
XIAO RP2040 v1.22 SCH.pdf.zip (61.1 KB)