Hi Atsunori, Welcome to E2E and thank you for your query. As there is not much information in the datasheet on the DOUT pin, I need to test it on the EVM to verify whether it goes to tri-state when SYNC is HIGH, or not. Ideally, that's the typical behavior. But I can't confirm it because that datasheet doesn't mention anything about it. I should be able to let you know by end of this week. Regards, Uttam Sahu Applications Engineer, Precision DACs
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