LIWEN LIN, KA-MENG LEI, PUI-IN MAK AND RUI P. MARTINS,
An Ultra-Low-Voltage Single-Crystal Oscillator-Timer (XO-Timer) Delivering 16-MHz and 32.258-kHz Clocks for Sub-0.5 V Energy-Harvesting BLE Radios in 28-nm CMOS
IEEE Open J. Circuits Syst.
Mar-2023