filter coefficient AD1556

Does IC AD1556 itself contain the filter coefficient ? I dont have the the evaluation board like EVAL-AD1555/AD1556EB and i am using different sigma-delta modulator.

If no, how will we store/load the filter coefficient into IC AD1556 itself ?

  • Hi dp01,

             I cannot see the Eval-ad1555/56 available in the ADI website. I will get back to you in a couple of days to check the evaluation board and check on the filter coefficient.

    Regards,

    Jonathan

  • Hi dp01,

           I am still looking of the filter coefficient details. Meanwhile I would like to ask some of the questions that we might be able to help. What type of application the AD1555/56 are you planning to use for? Do you already have filter requirement, meaning the passband range or the stopband? What is your requirement in terms of noise, speed or power?

    Regards,

    Jonathan

  • Hi dp01,

          Would I know how many taps are you planning to use? and what is the sampling rate of your application?

    Regards,

    Jonathan

  • hello jcolao!

    Sorry for the delayed reply. Actually i am using AD1556 in my b.tech project, where i will be given the binary bit-stream from different modulator.

    I am getting modulator output perfectly fine. Now i need to get digital output using the AD1556.

    I am not able to use it in hardware mode, so i started working in software mode. I am using arduio uno for this purpose. When i tried to  read status register, atleast i am getting something now although not sure if correct or not. I am still not able to read the data bits.

    And do you know whether it has preloaded filter coefficients or not. BTW using any configuration should not effect that much i think, isnt it.

    Please help.

    DP

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