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应该是FPGA在抓取数进行数字域处理的时候没有满足datasheet第4页上的时序关系,采样率越高,FPGA端时序越紧张,越有可能无法满足时序要求,出错概率就如你所测的变大。谢谢!
Yingzi Liu
ADS828的时钟不建议有FPGA供给,这样性能很不容易保证。建议由专业的时钟芯片供给。比如CDCE72010,CDCM7005等。而且由FPGA供时钟的时候,时钟和数据之间的时序在高速时不宜满足