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REF4132-Q1: REF4132A40DBVRQ1

Part Number: REF4132-Q1

Hello. I am looking for a suitable second source for our design. In this circuit, the REF4132A40DBVRQ1 (reference 4.096V) is the EN pin to enable the output. Can this pin be left unconnected? Does it have an internal pull up/down? If it can be unplugged, will that be OK from an EMC point of view?