ADRF6655

Hi all,

I have a problem with ADRF6655. LO part is not working. I adjust 1090 MHz of LO frequency in Software. I send input frequency as 950MHz and also adjust other requirements as test procedure (5V Vcc, 3.2V IP3SET and 20MHz Ref signal). Then I measure output signal, it is about 445 MHz. I change input signal frequency and i figure out that frequency of LO signal was about 1395 MHz. But it should be 1090 MHz. After that i try to enable LO output driver and it works!!! Then i change LO frequency but there is no change in LO output, again about 1395MHz. I don't understand that why LO frequency works out of my control and how was LO output driver enable.

Thank you for your replies

makifaydin07 

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