• AD9517-1配置方法和环路滤波器相关配置问题

    利用50MHz单端参考时钟和内部VCO驱动,内部VCO为2.5G,输出250MHz,用途是驱动AD9434采样芯片,配置如附件

    调试中遇到了以下几个问题:

    1. 刚开始一直无法锁定PLL,后来重新配置了环路滤波器后可以锁定了,但是输出的信号非常小,配置为LVDS输出时峰峰值只有几十到100多毫伏;配置为CMOS时峰峰值只有200mV左右;

    2.环路滤波器CP和LF端口都只能测到直流电压,带宽选择有什么讲究呢;

    我想了解关于FPD频率和环路滤波器设计时有什么注意事项,特别是参考输入的时钟抖动比较大的情况…

  • AD9517-0 Evaluation board to drive a prototype board populated with an AD9517-0

    Hi everyone,

    I am trying to use a "AD9517/PCBZ (Rev B)" evaluation board to drive an AD9517-0 installed in another board designed by us.

    The intention is to use the "AD9516/17/18 Evaluation Software, Version 1.1.0" to control/program the AD9517…

  • AD9517 reference clock ac-coupling

    Hello,

    I'm facing problems with the AD9517-1 reference clock inputs.

    I want to ac-couple a reference clock into REF2, but when I read back register 0x001f, I always get 0x08. The clock is not recognized by the monitor. From the data sheet I get…

  • AD9517 Internal VCO

    Hello,

    I am moving away from my ZedBoard with the AD9467 FMC card and towards my custom board. I just got the board up and running and am attempting to change my source code to make the AD9517 use the internal VCO instead of the external oscillator that…

  • RE: AD9517-3 output clock is not stable.

    HI,

    I took your register values and I configured an AD9516-3 evaluation board ( I do not have an AD9517-3 board, but the AD9516-3 is very similar to the AD9517-3). I provided a 10 MHz clock at REF1 connector of the board. It was not a CMOS input as the…

  • AD9517-3 Clock Input

    Hi, My name is Haichuan LIN.

         I have already read about the AD9517-3 data sheet. And there is

    no information whether AD9517-3 clock input accepts sine wave.

    In data sheet, AD9517-3 clock input accept 150mVpp(1V/ns is prefered).

    Here, I want to make…

  • ad9517 fireware cause kernel cut

    I use AD9265FMC card and Zedboard for develop, I want to use the ad9517-4 to get a 102.4MHz clock in output5, now I use a 100MHz external crystal oscillator, set PFD to 4MHz, and internal VCO 1536MHz, then divider 15 to get the 102.4MHz clock, but now…

  • RE: AD9517-4 phase noise

    Hi Alexander,

    My apologies for the late reply.  I have taken this setup back to the lab and verified similar performance to what you are seeing.  Below I have attached a phase noise plot of the reference and a phase noise plot of the output of the AD9517…

  • AD9517-3

    Dear Sir/Madam,

    AD9517-3 on-chip VCO frequency range is 1.75GHz-2.25GHz, but the manual's Table 28. showoing using a 10 MHz Reference Input to Generate Different VCO frequency  less than 100MHz, is this conflict with teh  VCO's frequency range 1.75GHz…

  • AD9517-3

    您好,

    我们在使用AD9517-3的过程中发现OUT0 OUT1没有时钟信号输出,只输出一个大概2V的高电平,OUT2 OUT3有时钟信号输出,OUT0/OUT1OUT2/OUT3的输出频率都是设置为120MHz,LVPECL输出电压设置为780mV(默认值),使用交流耦合。请问是怎么回事?

    OUT4 OUT5 OUT6 OUT7都有时钟信号输出。