• HMC661 S-parameters


    Are single-ended and differential one-port S-parameters for the two sampling inputs on the HMC661 available?  I can't find them on the datasheet or web page.



  • HMC661- Offset in output pins for DC coupling

    My application consists of connecting HMC661 with Xilinx RF SOC ADC (ZCU111 board) with sampling at 2GSPS. The ADC has Vcm of 1.25V. But I want ADC and HMC661 connected DC  coupled. 

    HMC661 datasheet says that Vob pin can have voltage between 1 to 3 V and…

  • RE: HMC760 / HMC661 Minimum Clock Frequency Limitation?

    Hi Engineer Zone experts,

      I am looking for the answer to the same question as previously posted Jan 5, 2018.

    The answer on Jan 18, 2018 was telling us the performance alters significantly due to droop.

    Continuing the thoughts, what if the droop happens…

  • RE: interfacing HMC661 with Xilinx Rf SOC ADC


    I'm not sure about the XiLinx input, but the HMC661 output is 50 ohms per port, or 100 ohms differential.  If you don't need DC operation, you can just connect the amp and ADC with series caps.  



  • Is the footprint of HMC661 from ADI Website correct ?

    Dear Sir Or Madam

    As the Subject mentioned , The footprint of HMC661 downloaded from ADI website is not correct .


    Would you mind to have…

  • RE: HMC661 operating 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,
  • HMC661 Maximum Input

    Hello dear,

    What maximum safe DC voltage input for HMC661?


  • Power Supply Ripple requirements of HMC661

    I wonder if there is any Power Supply Ripple requirements of HMC661?

  • Variable delay line for HMC661 and high speed ADC


    I am planning to use HMC661 and a high speed ADC to capture a ultra narrow pulse (BW>10GHz). I notice that in a document for a similar device (http://www.analog.com/media/en/technical-documentation/technical-articles/track-n-hold_0411.pdf )…

  • HMC1061 and HMC661 thermal resistance


    Can you provide the junction-to-case thermal resistance (both top and bottom) of HMC661 and HMC1061?

    Thank you.