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ad9781

AD9781采用FPGA作为驱动,采用200MHz时钟,FPGA数字信号给DAC输出3MHz正弦波,但DAC输出信号上叠加有时钟二次谐波信号(400MHz),请问要如果去除DAC输出信号上叠加的时钟谐波信号?

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