A 6.66-kHz, 940-nW, 56ppm/°C, fully on-chip PVT variation tolerant CMOS relaxation oscillator. - Keishi Tsubaki; Tetsuya Hirose; Yuji Osaki; Seiichiro Shiga; Nobutaka Kuroki; Masahiro Numa (ICECS, 2012)

A Fully On-Chip, 6.66-kHz, 320-nA, 56ppm/°C, CMOS Relaxation Oscillator with PVT Variation Compensation Circuit. - Keishi Tsubaki; Tetsuya Hirose; Yuji Osaki; Seiichiro Shiga; Nobutaka Kuroki; Masahiro Numa (IEICE Trans. Electron., 2014)