• ad9520-0的硬件设计

    现在设计一个高速的AD采集电路,需要设计一个高精度的时钟,拟采用AD9520-0来完成设计,现在的问题是:

    它的硬件电路如何设计?

    是否使用晶体,通过芯片就可以产生高稳定的时钟,晶体如何选型?

  • RE: AD9520-0 PLL locking

    Hi Prakash,

    Refer to UG-076 on this page for how to use the evaluation software to configure the part:

    http://www.analog.com/en/clock-and-timing/clock-generation-and-distribution/ad9520-0/products/EVAL-AD9520-0/eb.html

    Once you have the correct register…

  • AD9520-0 Communication problem.

    Hi,

    I am using AD9520-0 clkgen, I am trying to communicate it using SPI.

    I have made the following configuration:

    1. I have kept SP0 and SP1 of AD9520 high.
    2. I have kept the pins REF_SEL,RESET,SYNC,PD high and EEPROM low.

    I am not able to read…

  • RE: AD9520-0 heating up and output frequency gradually decreases.

    Hi Prakash,

    It's hard to know where to begin. You need to design a proper loop filter for your application, and use the evaluation software to determine the register settings. Have you done this already?

    The evaluation board and tools can be found…

  • Difference between AD9520-1 and AD9520-5

    Hi all,

    I have an AD9520-5/PCBZ and need one more. So I tried searching for it on digikey, newark and mouser, but couldn't find it. Therefore, I am considering AD9520-1/PCBZ instead.

    My question is,

    1. Difference between AD9520-5 and AD9520-1…

  • RE: AD9520 Mode0 problem with configuration

    Hi Prakash BJ,


    Can you read the value that you have written for the output divider associated with the output that you are viewing?  For example output divider 0 (Reg 0x0190) should be written with a 0xDD.  Writing 0xBB would give you 28MHz outputs assuming…

  • RE: ad9520-2时钟发生

    Hi,

    Have you looked at the evaluation board user guide?

    http://www.analog.com/media/en/technical-documentation/user-guides/UG-076.pdf

    If you are using software version 2.1.x and the evaluation board is not being recognized by the software, you may…

  • AD9520-1 config settings

    Hi,

            We are using a  AD9520-1 , in two modes

    1) In mode 0 it uses internal VCO which generates 2.52 Ghz, VCO divider with division value 6, so the output frequency is 420Mhz.

       Q.) can i bypass every divider except the VCO divider?

    2) In mode 1 it…

  • AD9520-5 PLL

    I haven't found the way to set the prescaler of AD9520-5 to 1. In datasheet says that prescaler in fixed division can be set to 1, 2 or 3. But also below the "VCO/VCXO Feedback Divider N: P, A, B, R" says that P can be 2, 4, 8, 16 or 32. I have…

  • AD9520-1 BCPZ  

    Hi, I am using AD9520-1 BCPZ  IC for getting 12 , 250 MHz differential clocks. In this case I have left open the pin no. 63 and 64 i.e. REF1 and REF 2 and giving an differential input clock of 100 MHz at pin no. 13  & 14. Loop filter input is coming from…