放大器OPA2277输入一个正弦信号,放大7.2倍以后,信号变形了。请教是什么原因??
从pin2来看,波形漂移了,低于漂移量的部分为高电平。
当输入(pin3)位0时,pin2和pin1(输出)都为高电平
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信号频率在运放带宽之内的前提下,改改电位器,缩小放大倍数看看效果