• 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…

  • 关于ADF5001和ADF4156的连接问题

    您好,

    关于ADF5001和ADF4156的连接,参考设计上给的是最好用差分线来连接,但是没有给出如何详细的布设这一差分线,感觉这个应该比较重要,不知到有没有详细的参考设计图?我是个新手,对这个还不是太清楚,根据我的理解ADF5001差分输出阻抗是100欧,那在pcb板上如果使用微带线的话,对应于RFout - RFinA,和RFOUT_N - RFinB的微带线特征阻抗是不是应该设计成50欧,还有这个连接需不需要终端匹配? 如果需要的话应该如何进行匹配?

    还请大牛们给予帮助,谢谢!

  • RE: 采用adf4150hv+hmc586能否实现5-7GHz的扫频?

    可以, 不过因为ADF4155HV的RF频率范围是0.5G to 3GHz. 所以需要在HMC586输出分频后反馈到ADF4150HV, 推荐ADF5001, 4分频

  • RE: ADF5000 stable with no RF applied?

    yes like with most RF dividers, the input stage will self-oscillate with no RF present.

    The only way to overcome this is to use the hardware powerdown pin (CE) .

    The self-oscillation frequency for the ADF5000 is ~ 10GHz. This halves for

    every extra…

  • RE: Without Input, ADF5001 Output an Sine Wave

    The ADF5001 has a self oscillation frequency of ~20GHz resulting in 5GHz (20GHz/4) signal at the output. There is an internal AC coupling capacitor on the part so grounding the input has no effect. Pulling the CE pin (pin 7) low will power down the part…

  • RE: ADF5000, ADF5001, or ADF5002 sensitivity vs. temperature?

    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,
  • Query about ADF4158 Simulation with ADIsimPLL

    Dear supporter

    I use the ADIsimPLL to simulate the ADF4158. I use the VCO library editor to define the 15GHz VCO I used and the VCO follows a divided by 4 ADF5001. The setting in the ADIsimPLL is shown as follow.

    The problem is that the simulation result…

  • RE: ADF5001 和ADF4156的连接问题

    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: ADF4158 - Is it possible to modulate a VCO from 11.5 - 12.5GHz

    You could use the ADF4158 and the ADF5001 divide-by-4 prescaler for your circuit. See this solution for reference: http://www.analog.com/en/circuits-from-the-lab/CN0174/vc.html

    Just replace the ADF4156 with the ADF4158 and replace the VCO with one for…

  • 关于参考电路CN0174

    Dear:

       最近看到参考电路CN0174《使用有源环路滤波器和RF预分频器的低噪声12 GHz微波小数N分频锁相环》,看到其12 GHz PLL 的测量性能与仿真相位噪声性能对比图。我不知道,在设定的参数下,是如何仿真得到在12GHz输出时相位噪声达到-130dBc/Hz@1kHz。如果相噪按6dB倍频恶化,从100MHz参考输入,鉴相频率25MHz,算上ADF5001的预分频系数,12GHz频率分频到鉴相频率,共有480次分频。这种情况下,相位噪声是如何实现或如何计算仿真到图示中的性能的?…