TDC7200_15 Datasheet, PDF (12/50 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
8 Detailed Description
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8.1 Overview
The TDC7200 is a stopwatch IC used to measure time between a single event (edge on START pin) and multiple
subsequent events (edge on STOP pin). An event from a START pulse to a STOP pulse is also known as time-
of-flight, or TOF for short. The device has an internal time base that is used to measure time with accuracy in the
order of picoseconds. This accuracy makes the TDC7200 ideal for application such as flow meter, where zero
and low flow measurements require high accuracy in the picoseconds range.
8.2 Functional Block Diagram
8.3 Feature Description
8.3.1 LDO
The LDO (low-dropout) is an internal supply voltage regulator for the TDC7200. No external circuitry needs to be
connected to the output of this regulator other than the mandatory external decoupling capacitor.
Recommendations for the decoupling capacitor parameters:
• Type: ceramic
• Capacitance: 0.4 µF–2.7 µF (1 µF typical). If using a capacitor value outside the recommended range, the
part may malfunction and can be damaged.
• ESR: 100 mΩ (max)
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