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Development of a time-to-digital converter IC for laser radar |
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| Affiliation: | 1. Flora research ethnobotany and ethnopharmacology. Department of Biology, Faculty of Sciences, Université Abdelmalek Essaâdi, Tetouan, Morocco;2. Department of Botany, Faculty of Pharmacy, University of Granada, Campus de Cartuja, E-18071 Granada, Spain;3. Departement ChiBioFarAm, University of Messina, Italy |
| Abstract: | A CMOS time-to-digital converter IC with half-nanosecond resolution by inverter-delay-time has been developed for measuring time intervals with a fully digital circuit. A new circuit “ring-gate-delay” system using two revolution counters can make the area of the circuit far smaller than it would be without them. Accuracy is assured through digital processing with a 2 MHz crystal clock reference. A time resolution of 0.5 ns and a measurement range of 0–2200 ns using 1.5 μm CMOS were confirmed. |
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