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hmc386 stops sweep frequency

Question asked by TBcracker on Apr 10, 2017
Latest reply on May 3, 2017 by MRichardson

Hello guys, the HMC386LP4E on my PCB frequently broken down: it stops sweep the frequency, stays at a single frequency point, however the controlling voltage is right.

   i thought it might because of the power, but my power supply is 3.3V from a LDO AMS1117-3.3, the datasheet claims the absolute maximum voltage can be 3.5V, since the LDO is pretty smooth, so i am really confused about the reason it stops working normally.