电路图如上所示,示波器测量VREF_1.5,示波器显示波形如下图
怎么回事,换成LM358就正确,芯片假了吗??
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这个很奇怪啊,OPA2333的指标性能比LM358好很多。
你把R13去掉,还有震荡吗?
示波器加到芯片输出端的时候,芯片输出脚和运放之间串联一个电阻,大概1K欧姆左右,做隔离用。怀疑是示波器引入的振荡。