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ADS7841: 部分器件出现单端采样正常(ch0、ch1采样正常),差分采样会只能采一个方向的电压(ch0<ch1时可以采样),另外方向无法采样(ch0>ch1时无法采样)

Part Number: ADS7841

部分器件出现单端采样正常(ch0、ch1采样正常),差分采样会只能采一个方向的电压(ch0<ch1时可以采样),另外方向无法采样(ch0>ch1时无法采样),目前推测器件的切换开关可能有损坏,但是没找到损坏机理。另外是否有人清楚这个器件其它的失效案例?