• ADF4156

    I wonder what is the Frequency Switching Time of  ADF 4156 and what is the max hop rate

    Thanks

  • RE: ADF4156 phase resync

    Hi Austin

    In my system the ADF4156s share the same 10MHz reference but they are not initialized simultaneously. Is it still possible for me to control all the PLLs to give equal phase output?

    If I give up the fractional function of ADF4156 by setting…

  • RE: CN0174 schematics

    Hi Payam,

    The circuit described in Figure 3 of CN0174 consists of several PC boards connected together.

    We do not have complete schematics for the entire system, but we do have documentation for the individual evaluation boards for the ADF4156 and the…

  • RE: ADF4156 Design Issue at 1911.642 MHz

    ADF4156 thread moved to the RF Components community.

  • RE: PLL Selection

    Hi Kevin,

    To achieve the 1kHz resolution across the full-band I think he will have to use a fractional-N PLL, like the ADF4156. The problem would

    be sourcing a VCO that can cover his range of 5MHz to 100MHz.

    One circuit suggestion would be to use a…

  • RE: ADF4156 eval. board

    Hello

    Our apologies for the delayed response...

    The  EV-ADF4156SD1Z board contains the ADF4156 synthesizer, an SMA connector for the output signal, power supplies, a reference oscillator, and an SDP connector. There is also a loop filter (20 kHz) and…

  • RE: ADF4156 writing to the registers

    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
  • RE: ADF4156 muxout question

    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
  • ADF4156快速锁定问题

    请教一个ADF4156的问题。ADF4156的文档说明:要使用Cycle Slip Reduction Mode来提高锁定速度“CSR cannot be used if the phase detector polarity is set to negative.“。控制宽带的VCO的使用需要加运放,这时如果把phase detector polarity set to negative,就不能用CSR功能。能否把极性设置为正,用两个运放反相的运放?一个做反相放大,一个做反相环路滤波器?

    谢谢…

  • 关于ADF4156不能锁定的问题

    近期使用ADF4156做一款发射机,在搭建PLL电路时,将配置程序写入时,观察MUX管脚(设置N分频输出和R分频输出)都能观察到频率为鉴相频率的周期性脉冲信号,但是VCO的输出频率一直不变,经测试,原因是VCO的输入控制电压一直为0V。使用ADISIMPLL软件进行仿真搭建的三阶无源环路滤波器,为什么没有将电荷泵的信号积分为要控制VCO的电压(2V左右)?另外,配置完毕MUX管脚(设置N分频输出和R分频输出)波形正确是不是说明晶振和配置程序都没问题?还应该怎么调试?弄了好久,请各位大侠解决

    附件1为ADISIMPLL仿真文件…