I am using the HMC641 SP4T switch in a new design. A parameter of interest to me is Output to output isolation. This is not explicit in the data sheet (although may be implied by the common to output on/off ratio). The downloaded s5p file indicates 42 dB,

I am using the HMC641 SP4T switch in a new design. A parameter of interest to me is Output to output isolation. This is not explicit in the data sheet (although may be implied by the common to output on/off ratio). The downloaded s5p file indicates 42 dB, which seems consistent with the data sheet RFC-RFX isolations. Is there a reason for the 20 dB difference, specifically a reason that may yield a measureable 60 dB result ?

  • 0
    •  Analog Employees 
    on Nov 18, 2014 5:07 AM

    H John,

    Sorry for the late reply to this inquiry. As discussed in my separate email to you earlier, the HMC641LC4 is not recommended for new design and will soon be replaced by our released HMC641ALC4. Attached is the de-embedded s5p files for the HMC641ALC4, which the RFx isolations can be analyzed. There are some performance variations on isolation between port to port, with typical 42dB.

    Regarding to the HMC641LC4 s5p data, one of the port isolation data might be inaccurate as it shows better isolation than the typical. I have verified the HMC641ALC4 s5p data to be correct.

    Best Regards,

    MN

  • 0
    •  Analog Employees 
    on Aug 2, 2018 2:49 PM
    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,
    EZ Admin