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放大器并联电容补偿

Other Parts Discussed in Thread: THS4001, THS3001

用THS3001和THS4001分别来反相放大一个5MHz的方波,都不约不约而同的出现了一些过冲,同时在反馈电阻上并联一个小电容来改善这种过冲,电压反馈放大器THS4001在CF的帮助下工作的非常好,但是电流反馈放大器THS3001在CF的作用下却无药可救的自激振荡起来,这是为什么?