• ADF4350/ADF4350 Linux driver problem

    Hi all,

    I am trying to use the adf4350 Linux kernel driver on a my Beaglebone embedded board.

    The driver is compiled correctly (also because it's already included in the kernel source), but nothing is working as reported here in the Driver Test…

  • ADF4350 Strange output spectrum from the EVAL-ADF4350

    Hello,

    I programmed the registers as shown in 1000-registers.JPG and I got 1000-spe-ana.jpg on the spectume analyzer but when I changed the frequency to 850-registers.JPG,  then I got  850-spe-ana.JPG.... could you explain why? Thanks! Gio

  • ADF4350

    Hii there,  I Intend to control the Eval-ADF43500EB1Z through a network connection(using RJ45).  Is it possible to do so?

    How about the graphical PC control source code (Visual Basic or Visual C++ based ) that comes with the ADF4350 Evaluation board.…

  • ADF4350 spurious

    Recently I tested my ADF4350 card

    1.The fundamental spectrum(2.2 -4.4)GHz is fairly pure

    2.When I use divider in PLL to  generate frequencies less than 2.2GHz (say1.2GHz)I can see

    lot of spurious In addition to Harmonics.Those spurious are with an…

  • ADF4350 programming

    Hi to all, I'm playing with my own software for ADF4350 and I'd like to know if after first initialization of registers R5, R4, R3, R2, R1 and R0 to generate new frequency, for example, it's correct to update only R4 for new RFDIV,  R1 and…

  • ADF4350 SPI

    Are the timing characteristics for the ADF4350 three wire interface shown on p5 of the data sheet correct ? We have not been able to get this to work as described.

    Specifically, a rsing clock edge in the middle of the data bit does not work (data setup…

  • ADF4350

    I have a customer
    that is doing development of control code for the ADF4350, for a proprietary
    project for his client. He was able to work with the ADF4350 eval board using
    the supplied AD control software. They are working to develop their own
    software to…

  • ADF4350 lock detect (LD pin)

    We are experiencing a weird thing that the ADF4350 LD pin is always HIGH, or the locked LED is ON even if the output frequency is wrong. 

    #1

    For example, we have 10MHz REF IN and set ADF4350 to have 1600MHz output.

    However the output is 2200MHz instead and…

  • ADF4350 Phase Resync

    Ths is comment on recent posting of an App Note

     

    Achieving phase coherence between multiple Fractional-N PLLs

    ADF4350 Phase Resync and Phase Programmability

    Please post the two references cited as hyperlinks - 'here' - I could not click into them…

  • 请教ADF4350



    有谁用过ADF4350啊?我在调试ADF4350,遇到一些障碍,请好心人给指点一下,我想输出单频点440M的时钟,参考时钟10M,鉴相器的频率为10M,外围低通滤波器的参数带通946Khz,相位裕度44.6deg,(我也想把带通设为1000Khz,相位裕度45deg,但是我现有的电阻电容,只能得到这样的参数),我在具体的调试中,发现当mux选择输出R分频时,LD能锁定,产生了440M的时钟,但是其左右有一小堆杂散的频谱,幅值不是很高,但能清晰的看到,当mux选择输出N分频时…