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OPA2228做射随器问题

Other Parts Discussed in Thread: OPA2228, OPA228, OPA227, OPA637

我使用OPA2228双运放,其中一个运放做THS5651的输出I-V转换,将该电压信号经过电阻分压衰减送进另一个运放组成的射极跟随器,但是测到在进入分压前没有问题,但是在分压之后的一点信号就出现了失真,请问是什么原因,如何解决?