TDC7200_15 Datasheet, PDF (40/50 Pages) Texas Instruments – TDC7200 Time-to-Digital Converter for Time-of-Flight Applications in LIDAR,Magnetostrictive and Flow Meters

TDC7200
SNAS647C – FEBRUARY 2015 – REVISED AUGUST 2015
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CLOCK Recommendations (continued)
Because the effect of jitter is random, averaging or accumulating time results reduces the effect of the
uncertainty introduced. If the time is measured m times and the result is averaged, then the uncertainty is
reduced to: Clock_Jitter_Uncertainty = (√n) x (θ_JITTER) / (√m).
For example, if 64 averages are performed in the example above, then the jitter-related uncertainty is reduced to
25 ps RMS.
Figure 49. CLOCK Jitter
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