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ADS1118 多通道切换 存在延迟时间

Other Parts Discussed in Thread: ADS1118

ads1118的四通道同时启用,写寄存器是写的0xC3EB,写一次寄存器读一次值,读到的总是上一个通道的值,这个问题我理解。我不能理解的是:如果两次读值之间的延时小于23ms,则出现返回的值乱码的问题,原始的数据手册也通读了,但是不能发现问题,而且改变sps(寄存器DR[2:0])对该问题也没多大的反应,请各位大神赐教,拜谢