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ADS122U04: REFP and REFN pin

Part Number: ADS122U04

Tool/software:

Hi all,

I would like to ask about the processing of REFP and REFN pin.

When the power is turned on, it is explained that by default, it operates as an internal reference and can be switched to external by a command.

If an external REF is not used, can these pins floating?

Best Regards,

Ryusuke