• RE: hmc767 sweep genaration using spi programming


    Are you setting Reg06h[7:5]=101? You can check the sweep modes given in Page 17 of the below operating guide. If this does not help you, let me know. 

    140-00074-00_operating_guide.pdf (analog.com)



  • RE: Hmc767 spi resgiter value using gui


    Yes, you can use register values in GUI for your own code. Register writing sequence is important. If you are using integer mode, you should write to Reg0h3 as last register and you should write Reg0h4 as last register in fractional mode. For more…

  • HMC767 Eval Kit(s) - Lost Communication


    I have a HMC767 eval kit with the USB interface board (full kit) and am using the internal oscillator (50MHz). I connected the boards to the computer and power supplies, powered on the supplies, and then opened the software. I load either the integer…

  • HMC767

    我用HMC767 参考用50M 鉴相用50M时可以锁定,但是当参考改为100M,再分频出50M用来鉴相时反而不能锁定了

  • HMC767

    HMC767 参考用50M,鉴相也用50M可以锁定信号,但是将参考改成100M后再二分频出50M鉴相就不行,啥原因

  • HMC767 lock

    HMC767 I use ref 50M  pfd 50   it can lock   but if i change ref to 100M   the pfd sitll choose 50M ,it can't lock,

    when I use ref 100M with a  divide by 3 it can lock the most frequency ,

  • HMC767/HMC361 Deadband

    I am using the HMC767 evaluation board connected to the HMC361 frequency divider evaluation board. The HMC767 seems to be working fine by itself but when connected to the HMC361 I see a dead band between 4.2GHz and 4.35GHz. Outside these frequencies the…

  • HMC765 vs HMC767

    Hello there,

     We are thinking in migrating a current design from HMC767 to avoid excesively low tning voltages to get 8GHz output frequency. Our idea is to use HMC765 instead but phase noise floor degradation seems to be expected. My questions are:


  • Filter for HMC767

    Hello all,

    I am starting the design of a frequency synthesizer with the HMC 778 PLL. As a reference,  I am using one design already done with the HMC 767.

    I try to understand the loop filter already done in that design. Unfortunately, the results does…

  • HMC767 low power output

    Hello, we created our own PCB for the HMC767 VCO w/ PLL. We followed the schematics of the evaluation board and everything seems to be working properly, we are able to lock frequency. The problem is that the VCO output power is quite low at around -3dBm…