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DAC地平面有关问题

Other Parts Discussed in Thread: DAC902

   做了一个DAC902,出来的模拟波形不好,但是用手使劲按住地平面不放,波形就变的好起来了,松开后波形就又不行了,这是为什么呢,电路检查了也没有错误,为什么用手按住地平面就好了呢?传两个波形图,