• Hmc778

    Hi all,

    i need gerber files for HMC778 EVB.



  • if it's suitable to choice a clipped sinewave for HMC767 and HMC778

    Now,I want to use HMC767 and HMC778 to generate a X-band signal,  A 50MHz TCXO is intended as a reference crystal. the ESPON's TG-5500CA is a clipped sinewave output, if it's suitable to choice  for HMC767 and HMC778? or is there any other good choice…

  • Can I get all SPI commands set for HMC778 programming?

    I have the datasheet and operating guide documents as the following name. (from the web site)

    -. hmc778.pdf

    -. 140-00074-00_operating_guide.pdf

    Unfortunately, I don't have a HMC778 Evaluation Kit. I want to know how can program the HMC778 using…

  • RE: PLL board layouts








    The HMC767, HMC769 and HMC778 share the same evaluation board. These can be found on the 'Discussion' section on the Full Product page for the HMC778 on the website (links back to EZ). I've attached…

  • HMC778 SPI Programming

    Dear Sir,

    I am using HMC778 to generate single frequency output at 10.8 GHz. I am using SPI in HMC mode to program the device and the base XTAL frequency to HMC778 is 100 MHz. Can I get the register sequence and value for this configuration ?? 


  • RE: source code for the evaluation boards of adrf6755 and hmc778?


    Source code for the HMC778 is not available. Sorry.

    Best Regards,


  • HMC778 RF output power too low

    Refer to HMC778 evaluation board, I have made a PLL board and its schematic is shown below. The RF output power of hmc778 should be 9dbm@10GHz. And I want to get 9-5+14=18dbm output power through a attenuation network and PA hmc441.

    The problem is the…

  • HMC778 - pll with integrated VCO

    hello, i would like your help in choosing a reference input clock for the HMC788 pll.

    I am a student who use this pll for a project but i don't understand what reference clock to choose.

    i know there are a lot of format for clocks and i am getting…

  • About HMC778 PIN: VCCVCO


    I have noticed that in the schematic of evolution board of HMC778, there is an option for pin "VCCVCO2". Shown as following.

    I want to ask the function of "JP2" or is there any difference if I provided 5V to VCCVCO2 or not?…

  • HMC778 Frequency Sweep Mode


    I have a question about HMC778 from the customer.
    He wants to make the trigger at TRIG synchronize exactly with starting of frequency change.
    Then, do you have any timing specification between rising edge of TRIG and starting of frequency change?