• Quesetion about HMC681A

    Hello professor,

        In the datasheet of HMC681A, there is an index of relative phase vs frequency. Could you please explain, what relative phase is, for me? And the datasheet just list the applications of 50 to 350MHz tuning and 350 to 1000MHz.

    If the…

  • HMC681A Low Frequency Performance

    Hi,

    the datasheet for the HMC681ALP5E says its frequency range of operation is DC-1GHz, but the performance curves shows going from 50 MHz up to 1 GHz only, I would like to know if this component is suitable for operation near 10 MHz, and if at these…

  • HMC681A DC Blocking Capacitor For RFin


    Hi, i am trying to figure out how to use HMC681A. In datasheet, it says RFin1,RFin2 pins are DC coupled and an off chip DC blocking capacitor is required. However, i want to use it for low frequencies as much as possible.(for DC if possible). Can i use…

  • HMC681A芯片手册里的Relative Phase这个指标是什么意思

    问题如题。在校学生做项目遇到问题请大家帮忙回答

  • RE: Logarithmic amplifer with Limiter Output

    这个选型表里的器件能符合你的需求不？ http://www.analog.com/cn/products/amplifiers/variable-gain-amplifiers/digital-control-vgas.html

    (例如 ADL5205, HMC681A, HMC960…)

  • RE: HMC681 connection

    Hi venkateshcr,

    In case you were not aware, I would like to mention that the HMC681ALP5E has Last Time Buy status. For that reason, you may wish to select a different part, one that is farther away from the end of its lifecycle. If you would like to…

  • RE: HMC681 IF Amp

    Hi Shyam61,

    Inside of the HMC681ALP5E are four die: Two amplifiers, a 6-bit digitally controllable attenuator, and a controller for the attenuator. The controller die gets used in several HMC/ADI products and is capable of being configured for either or…

  • RE: HMC681ALP5E

    Hi artemen,

    There is an important distinction to be made between the HMC681A part and the HMC681A EVB. The part itself allows access to the individual RF inputs and outputs for both amplifiers (let's call them Amp1 and Amp2) and for the variable attenuator…

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