sinc response in DAC

Discussion in 'General Electronics Chat' started by xw0927, Apr 6, 2014.

  1. xw0927

    Thread Starter Member

    Dec 19, 2010
    114
    0
    Hi all,

    Can you all show me how to obtain the sinc response from a DAC converter? as I know that it is because of zero-order hold, but I still can't get the idea why the sinc response will occuring in the high freqeuncy but not on low frequency?
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,055
    3,245
    The sinc response looks like a low-pass filter and is a function of the sample rate so you can get a sync response at low frequency if you sample at a low frequency. Here's an article to help explain.
     
  3. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,398
    497
    sinc is a pulse. So you turn DAC on, then you turn DAC off, there, you have one pulse.
     
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