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ADS5407输出采集信号频域底噪很差(见附件图片)

Other Parts Discussed in Thread: ADS5407, ADS54T04, ADS58C20

 ADS5407两通道输出采集信号频域很差,当0E,0F和38寄存器中很sync相关位disable掉后(sync 15.625MHz仍就正常给)底噪就会变好。一改成sync input脚后又会变差。