input/output of ideal ADC

Discussion in 'Homework Help' started by screen1988, Apr 13, 2013.

  1. screen1988

    Thread Starter Member

    Mar 7, 2013
    310
    3
    I have seen that many books draw input/output of ideal ADC as in figure 1 (attachment) with Vin:
    0-Δ/2 : 000
    Δ/2 - 3Δ/2: 001
    3Δ/2 - 5Δ/2: 010
    ...
    Why the lowest level of Vin from 0 - Δ/2 is smaller than other level?
    (in this case the range is only Δ/2 not Δ as in other levels)
    I have seen only a book that draw input/output of ideal ADC as in figure 2(attachment) with Vin:
    0- Δ : 000
    Δ- 2Δ: 001
    2Δ-3Δ: 010
    ...
    I wonder why most books don't choose this way?
    To me it seems more appropriate but I think there are some reasons for that.
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
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  3. screen1988

    Thread Starter Member

    Mar 7, 2013
    310
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