• ADA4961 Biasing

    On p. 21 of the datasheet, the Coilcraft 0805CS-471 470nH inductor was recommended as the output chokes for the ADA4961. We found that using these chokes caused a 1-dB drop in gain around 1GHz due to their internal parasitics. I suggest either the Coilcraft…

  • ADA4961 input RLC model


    I am looking to do a simulation of the ADA4961 input driver circuitry using a SPICE simulation tool.

    I am only able to find the S parameters for the ADA4961 on the ADI website.

    I unfortunately do not have access to any software packages that…

  • RE: [AD-FMCADC4-EBZ][AD9680] Full scale input range way too low for AD9680

    Hi Dragos,

    Indeed, I made several measurements on a 10Mhz 1Vpp sinus wave and the read values stop saturating if I set the ADA4961 gain to 0dB.

    So I guess I mistaken the readings last time I tried to edit the ADA4961 gain.

    Thanks a lot for your help…

  • RE: An  issue about  ADA4961

    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,
  • Unused pins on the ADA4961

    What should be done with A1, A0 and LATCH  inputs on the ADA4961 when using the serial interface? Should they be open, grounded, pulled high/low?

  • ADA4961 evaluation board not working

    I have the ADA4961 evaluation board EV-ADA4961SDP1Z and it is not working even though the SPI interface software seems to work all right.

    There is an instruction to load the eeprom file ADA4961_eval_board.sdpeeprom, but it was not included in the software…

  • ADA4961 Supply Voltage

    Is it ok to operate the ADA4961 with a supply between the 3.3 volts and 5 volts quoted in the data sheet ( say 4.5 volts)?

    My assumption is that the performance will then be somewhere between the specs quoted for 3.3 volts and 5 volt operation - is this…

  • ADA4961 output inductors


    I have two questions about the output inductors for the ADA4961.

    1) According to the ADA4961 datasheet, the recommended output inductors are Coilcraft 0805CS-471XJLC. The reason given in the datasheet is: "The self resonant frequency of these…

  • RE: VGA promotion


    You can check ADA4961 which has 3.2GHz -3dB BW, Diff Out, digital adjustable gain and HD2 typical at -81dBc and HD3 at -88dBc.

  • RE: IQ Mixer or IQ Demodulator and BB BW?


    I think this solution above could work. Let us know the results. A couple of things to keep in mind when doing this:

    1) HMC8191 output is single ended and the input to ADA4961 is differential so you will have to 50 ohm terminate one of the differential…