Time-to-digital converter
A technology of time-to-digital converters, which is applied in the field of high-precision and large-range time-to-digital converters, can solve the problems of large chip area overhead, achieve small area overhead, and achieve the effect of high-precision and large-scale time interval measurement
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[0040] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to specific embodiments and drawings.
[0041] Such as figure 1 As shown, the time-to-digital converter described in the present invention includes a coarse detection circuit 101, an interface circuit 102, a fine detection circuit 103, and a calculation unit 104.
[0042] A rough detection circuit 101 has port 1, port 2 and port 3. Among them: port 3 receives the input level signal and is used to select different measurement ranges for different level signals; port 1 and port 2 are used to receive respectively Input two transition edge signals with continuous time intervals, and use the loop delay line in the coarse detection circuit 101 to roughly measure the time interval between the two transition edge signals with continuous time intervals, and perform a rough measurement on the port Count th...
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