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AFE7222的AD输入前段有26MHz的66倍谐波输出

Other Parts Discussed in Thread: AFE7222

现在我们的AD/DA采用单端CMOS输入26MHz频率,但是在AD接入点有一个26MHz的66倍谐波输出,即1.716GHz。致命的是这个谐波正好在业务频点上,测试过了,这个输出干扰波是AFE7222输出,不知道是什么回事?还请教怎么解决,急!电话15918674071