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两片BQ76930用同一个I2C接口读取数据出线后读的不准确

Other Parts Discussed in Thread: BQ76930, TIDA-01093

你好,

1. 我用TI的TIDA-01093打样做了一个电路板,现在同时读取上下两片bq76930,发现后读的那个芯片总是偏小0.1V左右(每个通道),单独读上片,单独读下片都是正确,就是先下后上,或者先上后下,后面读取那个偏小。

2.针对第一种情况,读到的总电压是正常,但比10个采样通道加起来的值都要大一点。
3. 我每个bq76930都接了7个电池,为什么那些短接的通道也会有40MV的电压,为什么不是0..