A/D Word Clock Generator Question

Discussion in 'General Electronics Chat' started by Joster, Jun 12, 2015.

  1. Joster

    Thread Starter Member

    Jun 12, 2013
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    Hi All,

    We all know a rock solid word clock signal will improve any budget level recording interface. I just cant figure out why they are so expensive. Seems like a pretty simple task creating a jitter free clock signal at 48 kHz. I am sure i don't understand something. I mean i know about crystal oscillators and pll's and such. You would think you could connect up an oscillator and a pll to a good power supply and a bnc connector/ Any way curious to know peoples thoughts on my question.

    Thanks All,

    Joe
     
  2. Hypatia's Protege

    Distinguished Member

    Mar 1, 2015
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    AFAIK 'Word Clock' refers to an iPod App --- Hence your post would appear to be a non-sequitur --- Please clarify?
     
  3. Hypatia's Protege

    Distinguished Member

    Mar 1, 2015
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    ...As am I, namely the details of your application --- FWIW development of a clean, stable, 48kHz signal is, indeed, a trivial matter...

    Best regards
    HP
     
  4. WBahn

    Moderator

    Mar 31, 2012
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    Is there such a thing as a "jitter free clock"?
     
  5. WBahn

    Moderator

    Mar 31, 2012
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    What question? I don't see a question in the entire post.
     
  6. Hypatia's Protege

    Distinguished Member

    Mar 1, 2015
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    I think the OP wants to know why 'word clocks' are so costly/difficult to implement --- That's one on me:confused: -- But then I'm not especially au fait with 'niche' A/D conversion terminology...:oops::rolleyes:

    Best regards
    HP
     
    Last edited: Jun 13, 2015
  7. Hypatia's Protege

    Distinguished Member

    Mar 1, 2015
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    I hear ya!:) I would guess absolutes exist only in abstraction:D

    Best regards
    HP
     
  8. Joster

    Thread Starter Member

    Jun 12, 2013
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    yes this is what I am asking
     
  9. WBahn

    Moderator

    Mar 31, 2012
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    I guess the obvious question is to ask whether they ARE so costly/difficult to implement?
     
    Hypatia's Protege likes this.
  10. AnalogKid

    Distinguished Member

    Aug 1, 2013
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    Good point. Joster, how much are you being asked to pay, and what are you getting for the price? $15 (crystal oscillator and divider)? $1600 (Rubidium Standard and PLL)? Also, what are the phase jitter or Allen Deviation specs for what you are talking about.

    ak
     
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