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我采用3片BQ76PL536A级联测量14串锂电池电压，请问下3片BQ76PL536A之间是否共地（参考原理图上面不是共地）？如果不是共地的话如何测量电压？
http://www.deyisupport.com/files/m/d/12025.aspx
参考
或者参考 TI bq76pl536A 的EVM设计
