• RE: Video Feedthrough of HMC849A

    Hi,

    HMC849ALP4CE has 16mVpp spurious dc transient at RF ports when a 1MHz pulse signal (0V/5V) is applied to Vctrl control input.

    Best.

  • HMC849A S-parameter model / performance change

    Has the HMC849A RF switch changed in performance recently?

    The reason for the question: its S-parameter model has changed dramatically since 2017. Below is a plot for the HMC849A S-parameter model downloaded in 2017 versus a plot for supposedly the same…

  • RE: what is rise time and fall time of HMC849ALP4CE and HMC8038?

    Hi Sinan.Onat,

    The typical rise and fall time for the HMC8038 is ~35-40ns.

    The typical rise time for the HMC849A is ~60ns

    Please note, there will be some part-to-part, and process variations. The GaAs process (HMC849A) will have more process variations…

  • HMC849A的RFC端功率特别小

    如图:

    我在RF1端量到的信号有0dBm,频率为2GHz,VCTL电平为高,但是RFC端功率量到只有-30dBm左右,当我把RF1的频率降到越300MHz左右的时候,RFC端输出功率才接近RF1。请问是为什么啊?

  • HMC849LP4CE PDN information

    Hi,

    My customer had used HMC849LP4CE.

    They asked for the PDN information of HMC849LP4CE but I could not find the infomation HMC849, not HMC849A.

    Please provide PDN information of HMC849.

    Thanks.

  • RE: HMC849ALP4CE SPDT not working

    FormerMember
    FormerMember

    Hi,

    The HMC849A conducts the signal in bot direction, from RFC to RFx or from RFx to RFC.

    The dc blocking capacitor should behave like a short at operating frequency. 1.6 pF could introduce some loss due to its reactance at 5.9 GHz so I would recommend…

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