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自己做的板子,电路参考adc12d1800评估板子,配置完成后,测试输出频率为1.6GHZ,功率为 -29dbm左右,跟手册中0-3dbm不一样,想知道有哪些问题会导致其输出功率过低,以及如何调试?非常感谢~
你的LMX2531是给什么供时钟?输出匹配是否正确,用什么测得功率?建议你参考lmx2531evm ?
http://www.ti.com/tool/lmx25311570eval