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您好,2.2nF是容性负载,反馈电容1.5nF 是通过新加了一个极点来增益稳定裕度,同时也会减少震荡。
可以使用TINA对比一下不加反馈电容和加上反馈电容的相位或者增益曲线。
其次就是电源去耦电容,通常使用0.1uF和1uF。