高手帮我看看，做运放时相位曲线有上翘这是为什么？

零点了；
PM也不够

那是补偿引起的。

补偿没做好，建议去看下艾伦的书。

R is too large, probably also need increase second stage current and miller C. It's quite normal problem in two stage miller compensation OTA

把电阻减小一点