A 400 fJ Per-Cycle Frequency Reference for Internet of Things
Mathieu Coustans, François Krummenacher, Christian Terrier and Maher Kayal
IEL, École Polytechnique Fédérale de Lausanne, Switzerland
Abstract—This work presents an ultra-low power oscillator
designed to target different contexts, such as crystal-assisted time
keeping, reference oscillator to optimize the always on domain of
a microcontroller or wake-up timer. This oscillator enables ultra-low
power operation in 180nm CMOS technology with EKV3 compact model; the core
oscillator consumes 2.5 nW at room temperature, with a
temperature stability of 14 ppm/°C [-40°C - 60°C] and 0.07 %/V
supply sensitivity [read more...]
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