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Starved picowatt oscillator for remote sensor wake-up timer

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2 Author(s)
Kitchener, J.A. ; CHiPTec, Univ. of Adelaide, Adelaide, SA, Australia ; Phillips, B.J.

A sub-nanowatt oscillator is described. The oscillator is intended for a wake-up timer for remote sensors and hence trades frequency accuracy for reduced power consumption. It is constructed from a five-stage ring of inverters in which the switching speed is reduced using transistors that are always-off, or starved. Fabricated in a 0.35 μm process, the oscillator and its active load dissipate 80 pW at 1.5 Hz from a 1 V supply at 22°C.

Published in:

Electronics Letters  (Volume:48 ,  Issue: 12 )