ADM3053 has Vref pin but it is recommended not to connect it. What is the purpose of the pin? What happens if Vref has connection to the GND?
VREF outputs ~0.5*VCC. It might be useful to connect like a SPLIT pin, but it is not robust like CANH,CANL pins are. Any EMC benefit isn’t worth the risk of possible damage the transceiver might suffer if there is a fault/event on the fieldbus. VREF should be left floating.