Can multiple ADF 4002 be programmed so that they are phase coherent?
Concern that the divide by N will cause them to be on different phases. 

Although, it seems that if the Counter Reset is held in Reset on both ADF4002 and released immediately after t…

Hi all,

I designed my PLL circuit using ADF4002, I have two questions about REFIN pin of ADF4002. It is specified the specification of REFIN on datasheet as below.

In my design, 1.8V CMOS square wave from a fanout buffer applied to REFIN of ADF4002…

Dear Sir,

I am measuring the phase difference between two sinusoidal signals. The phase difference between them is very small, i.e. 0.01 degrees or smaller. Can this device detect such a small phase diference? If not, is there a hardware solution for…

Hi,

I'm using STC52 micro processors to write numbers to ADF4002 registers.

the code are below

#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
#define ulong unsigned long
sbit SCLK = P0^0;
sbit DATA = P0^1;
sbit LE …

I'm not sure how to interpret the RF Input Sensitivity for the ADF4002 (I'm not a RF designer).

According to the datasheet the RF Input Sensitivity is -10 - 0dBm (referred to 50ohm).

We have a differential AC coupled driver (square wave) with…

ADF4002特性 相位检测 频率合成

400Mhz 带宽

104Mhz 频率相位检测

调试说明：

         利用ADI PLL Int-N，选择ADF4002，根据需求得到想要的值即可。

配置顺序如下所示。

ADI_Int-N_Setup_v7_3_1.zip

ADI PLL Int-N 使用说明

软件界面如下所示：

首先选择ADF4002，如下图所示：

然后进入Main Controls界面，输入你的频率和你要的频率即可得到寄存器的值。

。

示例代码 …

We are having a trouble with ADF4002. In some cases, we don't succeed in the programming of the chip until a while in which temperature raises a bit. the failure depends on temperature, and appears only in relatively cold conditions.

We drive the…

I want to implement a PLL lock with the PFD frequency >50 MHz. I'm currently using the ADF4007 and this works great, but because the RF input has a minimum divider of 8, I can only input frequencies larger than 400 MHz. I want to be able to lock RF input…