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THS5671A: Input Mode (mis)behaviors

Part Number: THS5671A


Hey team,

I have a customer who came to me with the below issue. Let me know if you have any thoughts to kick off this conversation.

"We are having a strange issue with THS5671A chip. I hope you can assist with it. Another group of engineers here designed a system including this DAC a couple years ago, and they selected 2's compliment as an input mode for the DAC. The system was/is working fine. Then, we re-produced the same board recently, but our board is working only when we choose a binary mode as an input.

Our question is why are these same designs behaving differently?"

Thanks in advance!

Marco