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你好！我们使用dac3484，做窄带25khz，发现如果没有输入信号，或者输入信号很小-110dbm以下时，输出有失真现象，具体看图，能否帮忙分析下原因。
如果我输入功率稍微大点，或者开启10个以上载波，dac输出就正常了
有个输入功率后就正常了，或者开10个载波也正常，如图。
