Hello everyone

I'm using the ADF5355 signal generator board to send signals at a certain frequency and with a certain power level.

It is programmed using an Arduino Nano with SPI.

I was able to do this with the code attached to this message (obtained…

Hello everyone,

I'm using the ADF5355 board to send signals at a constant frequency in the 1-6GHz range.

I achieved to do this by programming the registers of the board with Arduino Nano and updating it every time I changed the frequency.

However,…

在使用ADF5355这款芯片时，我遇到了一些问题

频谱仪上可以看到对应的输出频率，但是频率在正负100Hz之内抖动，比较不稳定，所使用的频率源为外置信号源。

锁定指示中，数字锁定指示为高电平；而模拟锁定指示为低电平。

请问这样的现象产生的原因是什么呢？

Is there any newer/better device having lower phase noise at around 13 GHz?

I am having trouble attaining a lock with the ADF5355 in my current design and would like some suggestions on how to go about trouble shooting.

1) I have the eval board where I can validate my settings and attain a lock at 6000 MHz.

2) I have also used…

当我测试adf5355时发现无法锁定。下面是我测试的一些现象，希望能得到大家的帮助。

首先，我设置了如下图所示的环路滤波器，带宽为100kHz:

寄存器的设置如下：

输入为100M差分信号，实际测试波形如下。它的波形有点失真，不知道这里的影响大不大？

当muxout引脚设置为R分频输出时，输出为50MHz的波形，这似乎是正确的，但不是规整的方波，这会不会影响锁相环的锁定？

但当muxout引脚设置为N分频输出时，其输出不再正确，约为37MHz信号。在这种情况下，RFout引脚的输出肯定是不正确的…

Hello,

Could you please provide with me the C/C++ source for ADF5355 ?

Thanks in advance.

When I was testing adf5355,the pll couldn't be locked.Here are some of the phenomena I tested, and I hope to get your help.

First, I set up the loop filter as shown in the figure below, with a bandwidth of 100kHz:

The register is set as follows:

请问这个两边的杂散该怎么解决，有可能的来源是哪？