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关于OPA842的电路连接

Other Parts Discussed in Thread: OPA842

只有当Rf和R1是253到256欧时候,增益才是1倍,可是芯片手册上面推荐的数据是402欧,请问这个芯片的增益是怎样算的,怎么去确定各个阻值的参数呢?

新手刚上道,问题肤浅,请不要见怪。

OPA842.TSC