Reference design of CRD-22AD12N: the VAB voltage sense circuit

gkim

Hello,

With respect to the reference design of CRD-22AD12N, I have a question on the signal conditioning circuit for the AC input voltages on the main board.

For instance, the signal conditioning circuit for the VAB voltage sense is captured and uploaded as below.

Where does the signal LAB_G connect to?

I cannot find out its connection.

Thank you for your consideration.

With regards,

GKIM