LMH13000: LMH13000 High jitter for pulse count=1

Part Number: LMH13000


Dear team,

My customer has the questions below about the graphs in Figures 5-13 and 5-14 of the datasheet:

  • Why are the propagation delay and jitter values considerably higher when the pulse count is 1? 
  • The electrical characteristics show that the Iout jitter is below 6 ps for MODE=0 and 7 ps for MODE=1, but how are those values drawn from figures 5-13 and 5-14?

There are various ways of calculating jitter, but in this case I thought it might be a matter of just having 1 sample for the employed formula. Could you please let me know how these graphs should be interpreted?

Thank you in advance,

Aingeru

  • Aingeru,

    Apology for delay in response. The jitter is calculated as the rms value of the delta variation of propagation delay from the mean propagation delay value.

    Regarding the higher value of tpd and jitter for pulse count 1, we will get back by wednesdad this week.

    Regards

    Anant