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TIDA-01606: TI这个参考设计的电压采集为什么没用隔离采集?如果我们做产品,需要自己设计为隔离型吗?

Part Number: TIDA-01606
Other Parts Discussed in Thread: SN6505B

TI只有在电流采集时用了ACM1306隔离型,说是电流噪声影响到SYSTEM STAGE,但它的电压为什么没用隔离采集呢?(电阻采集电压直接到了运放) 

我们自己做产品时,需要设计隔离型电压采集吗?