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运放的开环相位曲线也就是open-loop曲线，第一个主极点我能理解，第二个极点是运放内部怎么产生的了呢？还有为什么在open-loop相位曲线45°位置上，在产生第二个极点的时候，gain曲线没有发生转折？！谢谢。，
关于运放开环曲线和稳定性，您可以尝试参考下面链接：
https://e2echina.ti.com/support/amplifiers/f/amplifiers-forum/20672/-part17?keyMatch=%E8%BF%90%E6%94%BE%20%E5%A2%9E%E7%9B%8A&tisearch=universal_search
https://www.ti.com/content/dam/videos/external-videos/en-us/1/3816841626001/4080254925001.mp4/subassets/opamps-stability-phase-margin-presentation-quiz.pdf
www.ti.com/.../4080254925001
确实应该有转折的，看带宽积是50M，也当成是没有转折，这到底是什么原因呢，求解释，楼上的链接没有解释这个问题。
