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opa的差分电容和共模电容



 请教下  opa的差分电容和共模电容   有什么区别,在应用时,应该注意什么?

再衍生问下, 设计滤波器时,差分带宽 和共模带宽 分部指的什么, 应用opa 设计filter时, 它的 那两种电容,怎么考虑?

谢谢