Understanding LVDS

Discussion in 'General Electronics Chat' started by master7, Feb 12, 2015.

  1. master7

    Thread Starter New Member

    Jun 30, 2011
    1
    0
    It has been a while since I have looked at this kind of thing so just want some reassurance. I want to connect the following output to the input described in the table....

    Output:

    [​IMG]

    Input:

    [​IMG]

    So my LVDS input is common mode 1.2V with typical differential input 350mV, seems to match my output right? There is no more information on the output, but I suppose things like actual output voltage level doesn't really matter because it is only using the differential at the input anyway? Maybe answered my own question, I don't know :)
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,446
    3,362
    Common mode voltage is 1.25V
    Differential signal is 0.35V
    So the output signal is 1.075-1.425V

    What was the question again?
     
  3. AnalogKid

    Distinguished Member

    Aug 1, 2013
    4,542
    1,251
    It looks like your differential output (0.340V) is a little below the typical signal expected by the receiver (0.350V) but comfortable above the minimum (0.100V). Also, your DC output level (1.2V) is dead on the typical input common mode level expected (1.2V). Looks good to me.

    ak
     
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