电路原理图如上,用示波器可以测到U32(LMX2581E)的第20管脚OSCIN有100MHz时钟信号,然后对LMX2581E的寄存器进行配置,
配置完以上寄存后,用频谱分析仪测试LMX2581E的第12管脚RFOUTA+,测不到2.5GHz频率输出。
请问对这个LMX2581E的配置或者电路原理图哪里有问题?
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