Time to digital converter

摘要

Problem to be solved: to provide a time to digital converter having a high measurement accuracy, without limitation in the frequency difference of the two signals and the measurement time range, and making the measurement time constant.The second signal is counted on the basis of the first signalA first counter portion which generates a first count value andFor the first count valueA weighting part based on the passage of timeAndThe first count value weighted by the weighting section is integrated to obtain an integrated valueA time to digital converter comprising an arithmetic unit for determining a time digital value corresponding to the time interval between the time event of the first signal and the time event of the second signal.Diagram