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Recent content by JTak

  1. J

    My VCO in LTC6946-4 does not work

    KlausST / Thanks for your reply. I followed the schematic in the datasheet page 29. When I test the device using spectrum analyzer, the device operates very well but only in 2.2~2.5 GHz range. PCB layout is here. Using this layout, I etched on FR-4 of which thickness is 0.8mm...
  2. J

    My VCO in LTC6946-4 does not work

    Hi everyone, I designed and fabricated LTC6946-4 PCB board. According to the datasheet, VCO in the chip can produce signal in the frquency range 4.2~6.4GHz. However, my PLL can generate only 4.4~5GHz when the voltage at TUNE pin is 0~5V. Informations of my pll is here. F_ref = 26MHz. N =...

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