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多通道ADS8168每个通道的采样速率确定问题

Other Parts Discussed in Thread: ADS8168

最近在做多通道AD选型,要求一个芯片是8个通道,千分之一的精度,采样速率是120k,最终选中ADS8168,但是ADS8168的数据手册上写着1MHz Throughput with 16MHz SCLK,我想问:这个1M的采样速率是指的每个通道的采样速率是1M,还是8个通道采样速率总共为1M,每个通道是1M/8=0.125M?我看了这款AD的结构框图,8路输入,经过一个8选1的多路选择器,送给ADC来采样,感觉这个1M指的是每通道是1M,但不是十分确定,请赐教,先谢谢了