A 280nW, 100kHz, 1-cycle start-up time, on-chip CMOS relaxation oscillator employing a feedforward period control scheme. - Takashi Tokairin; Koichi Nose; Koichi Takeda 001; Koichiro Noguchi; Tadashi Maeda; Kazuyoshi Kawai; Masayuki Mizuno (VLSIC, 2012)