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how to connect REF_SEL of AD9516-3 when the REFIN is differential pair?

Thread Summary

The user inquires about connecting a 200 MHz differential clock to the REF_SEL pin of the AD9516-3. The final answer clarifies that the REF_SEL pin has no effect in differential mode and recommends grounding it, noting the pin already has a 30kΩ pulldown to ground. The AD9523 family is suggested for multiple differential reference inputs.
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hello,

Recently I make the AD9516-3 to output 1G ,250M and 200M from the REF_SEL 200MHz. I plan to connect the REF_SEL of AD9516-3 to 200M difference clock from external chip.but How do I connect the REF_SEL? The datasheet only tells me about REF_SEL that select REF1(low) or REF2(high),what about differential pair REF1IN? thanks.

                                                                                                                                                                                                                                                                                                Best wishes.

                                                                                                                                                                                                                                                                                                yours

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