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The clock signal I provide to the ADC is 500M, passed from the LMK, AC coupled, not a standard sine wave, 0.8VP-P. Then I measured the ADC's DRY pin with an oscilloscope and found both a 250MHz and a 750MHz signal, both having similar peak values. Is this normal, due to the need to transmit data on both the rising and falling edges?
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Taylor：
您好，
已经收到了您的案例，调查需要些时间，感谢您的耐心等待。
,
Links：
Hi,
Not sure I understand your question. Can you please provide some oscope plots of the data and point out what the issue is, or otherwise?
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This is the DRY pin, you can see that it has a 750MHz component, and it's not small, I don't know if it's normal or not, my adc works at 500Mhz
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DRY以该设备时钟频率的1/2运行，因此您的250MHz DRY是正确的，采样数据在DRY信号的上升沿和下降沿都应该是正确的。
750MHz信号是预期的，因为该信号是方波，并且方波的傅里叶表示仅包含奇次谐波，理想情况下，可以在方形上升沿/下降沿上实现最快的转换。
谢谢
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