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Q&A ADM3053 Vref purpose

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ADM3053 Vref purpose

Ivan-Rusov

on Dec 25, 2020

Hi,

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?

Regards,
Ivan

+1 jnaso

on Dec 25, 2020 1:19 PM 2 months ago
Hi Ivan,

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.

Jason
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0 Ivan-Rusov

on Dec 25, 2020 1:25 PM 2 months ago in reply to jnaso
Thank you Jason!
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