+ Post New Thread
Results 1 to 3 of 3
  1. #1
    Full Member level 2
    Points: 2,956, Level: 12
    Achievements:
    7 years registered

    Join Date
    Oct 2006
    Location
    India Bangalore
    Posts
    120
    Helped
    21 / 21
    Points
    2,956
    Level
    12

    Is DAC Specs realted to Reconstruction filter Specs

    Hello friends..!

    I have some doubt regarding the DAC followed by filter (Reconst. Filter), Does DAC specifications are related to Filter specifications..?

    If not how can they be synchronized.?

    I have the reconstruction filter specifications and i want to generate the A-verilog model of DAC to check the filter response, so how do i model the DAC specifications..?

    Please guide me friends...!

    Thanks in advance..

    •   AltAdvertisement

        
       

  2. #2
    Advanced Member level 3
    Points: 9,246, Level: 22
    rfsystem's Avatar
    Join Date
    Feb 2002
    Location
    Germany
    Posts
    914
    Helped
    148 / 148
    Points
    9,246
    Level
    22

    Re: Is DAC Specs realted to Reconstruction filter Specs

    You typical assume that the DAC could be modelled by a zero order hold function. Or generate a stairwave.

    In practice there are derivations that the rise/fall time are not zero. So the spectrum at higher frequencies to be filtered is little lower. But WC is zero order hold.



    •   AltAdvertisement

        
       

  3. #3
    Full Member level 2
    Points: 2,956, Level: 12
    Achievements:
    7 years registered

    Join Date
    Oct 2006
    Location
    India Bangalore
    Posts
    120
    Helped
    21 / 21
    Points
    2,956
    Level
    12

    Re: Is DAC Specs realted to Reconstruction filter Specs

    yeah..i'm using the zero order hold itself .....

    i have the specifications for the filter which i need to design. but i also need the specifications of the corresponding DAC. i'm considering a switched capacitor filter of 8th order butterworth.



--[[ ]]--