This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
你好,是这样的,我做的是一个宽带直流放大器,我前置几是两个opa690级联,第一个690增益6DB,第二个690增益14DB,然后是程控级由两块vca810组成,当我在vca810后面接上一个四阶椭圆滤波器的时候好像自激振荡了,芯片很热,电压源显示电流静态电流突然增大,请问为什么