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…
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…
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…
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…
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…
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…
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…
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…
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…
