D. S. Truesdell, Li, S., and Calhoun, B. H., “A 0.5V 560kHz 18.8fJ/Cycle Ultra-Low Energy Oscillator in 65nm CMOS with 96.1ppm/°C Stability Using a Duty-Cycled Digital Frequency-Locked Loop”, in 2020 IEEE Symposium on VLSI Circuits (VLSI), 2020. A 0.5V 560kHz 18.8fJ_Cycle Ultra-Low Energy Oscillator in 65nm CMOS with 96.1ppm_C Stability Using a Duty-Cycled Frequency-Locked Loop.pdf Google ScholarBibTexRTFTaggedMARCXMLRIS