想请教,
我们自己做了一块ADS1292r的电路板,
未与控制器作连结,未加入输入时,
从PGA1P与PGA1N量测到约200〜300mV的的直流电压,
从PGA2P与PGA2N量测到约700〜800mV的的直流电压,
请问这是正常的现象吗?
谢谢!
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