TDC7200_15 Datasheet, PDF (15/50 Pages) Texas Instruments – TDC7200 Time-to-Digital Converter for Time-of-Flight Applications in LIDAR,Magnetostrictive and Flow Meters

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TDC7200
SNAS647C – FEBRUARY 2015 – REVISED AUGUST 2015
Device Functional Modes (continued)
8.4.2 Measurement Modes
8.4.2.1 Measurement Mode 1
In measurement mode 1 as shown in Figure 16, the TDC7200 performs the entire counting from START to the
last STOP using its internal ring oscillator plus coarse counter. This method is recommended for measuring
shorter time durations of < 500 ns. Using measurement mode 1 for measuring time > 500ns decreases accuracy
of the measurement (as shown in Figure 17), and is not recommended.
Figure 16. Measurement Mode 1
400
100
20
0 200 400 600 800 1000 1200 1400 1600 1800 2000
Time Measured (ns)
D019
Figure 17. Measurement Mode 1 Standard Deviation vs. Measured Time-of-Flight
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