[IEEE 2013 26th International Conference on VLSI Design: concurrently with the 12th International Conference on Embedded Systems - Pune, India (2013.01.5-2013.01.10)] 2013 26th International Conference on VLSI Design and 2013 12th International Conference on Embedded Systems - A 140µA 34ppm/°C 30MHz Clock Oscillator in 28nm CMOS Bulk ProcessLahiri, Abhirup; Tiwari, Anurag · 2013