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请问一下,我用opa2228制作了一个同向加法器,可输出出现了震荡,如图

Other Parts Discussed in Thread: OPA2228, OPA228, NE5532

请问一下,我用opa2228制作了一个同向加法器,可输出出现了震荡(其中正向输入的两个信号分别是峰峰值为1.36V频率4kHZ的正弦波,和5v的直流电平)示波器输出如图