LTspice plotting phase between signals

Discussion in 'General Electronics Chat' started by tom66, Jul 20, 2011.

  1. tom66

    Thread Starter Senior Member

    May 9, 2009
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    I am designing a phase shift circuit and it would be ideal if the phase between two signals could be plotted. At the moment I use the amplitude difference between the two and this works to an extent, but the result isn't particularly meaningful to me. (It's just an amplitude figure.) So, is there a function or way to plot the phase between two (identical frequency) signals?
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Open the LTSpice Help, select the Index tab, and scroll to "Waveform Arithmetic".

    There are lots of functions available.
     
  3. tom66

    Thread Starter Senior Member

    May 9, 2009
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    I see plenty of functions, but no "phase(x,y)" function or similar.
     
  4. ifixit

    Distinguished Member

    Nov 20, 2008
    639
    108
    Switch to AC analysis and it will automatically plot phase (dotted line) along with the amplitude.
     
  5. tom66

    Thread Starter Senior Member

    May 9, 2009
    2,613
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    Then I can't do transient analysis of a voltage controlled phase shift circuit...
     
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