Gated Counter Determines Which of Two Pulses Came First (.PDF Download)

In many applications, there’s a need to determine the difference in arrival time of two pulses, such as those derived from acoustic signals emanating from a single moving source. In this circuit, logic signals indicate the timing of the acoustic signals with good fidelity. (An analog front end, not shown here, shapes the analog signals and converts them to digital-logic signals.)

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