• HMC641

    Hello,

    I'm looking at the thermal specs for the HMC641ALC4 and need some help with clarification of the parameters. On page 3 of the HMC641 data sheet it shows the following:

    Thermal Resistance Channel to die bottom

    Insertion Loss Path  201 °C/…

  • HMC641

    Question on the HMC641 (we are using legacy HMC641LC4 parts), what is the typical, and the "minimum" & "maximum" digital control input current, for both I(INL) & I(INH)? How does the input maximum current rating vary as a function…

  • RE: Differences between HMC641 and HMC641A?

    FormerMember
    FormerMember

    Hi Alan,

     

    The HMC641 (offered in die form and in LP4 and LC4 packages) will be obsolete in next month due to foundry/process discontinuation. The HMC641A  was designed in a similar process from different foundry by
    targeting form, fit, functional drop…

  • 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...

    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…

  • Driving HMC641ALC4

    Hello,

    I am using the HMC641 SP4T switch in a wide band application. and I can't use the floting  ground driver techniques.

    So, I'am looking for an positif Driver for HMC641ALC4.

    Have you an  positive controlled SP4T in your catalog ?

    Best …

  • RE: HMC641A-DIE datasheet specification

    FormerMember
    FormerMember

    Hi,

    The pad 10 shown on the outline drawing is an extra ground pad as compared to original HMC641 (see below). The datasheet will be updated to show this extra ground pad on functional diagram too and match the pad numbers on pad description table.

  • Impedance related issue with HMC547LP3E

    Hi,


    I've been evaluating the SPDT HMC547LP3E, DC-20GHz as well as an SP4T HMC641, DC-20 GHz switch for use in one of my projects, using the evaluation modules. However, during my testing I noticed that the impedance of the switches jumps to ~65 Ohms…

  • HMC547ALP3E RFC connected to HMC641ALP4E RFC with no AC coupling cap, weird insertion loss behavior

    I have a fan-out circuit suing a HMC547 (to select src or cap) connected via RFC to a HMC641 to mux out to 4 lines

    The board has AC coupling caps on all the RF inputs but the RFCs are connected together DC coupled (oversight)

    I am getting weird issues…

  • HMC641ALP4E

    Hello,

    I am wondering if is possible to run the HMC641ALP4E with a positive + 5 volt supply instead of the specified negative 5 volts. Is there any reason why the grounds couldn't be connected to a +5 volt supply and the control lines pulled between…