Starved picowatt oscillator for remote sensor wake-up timer
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2012
Authors
Kitchener, J.
Phillips, B.
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Journal article
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Electronics Letters, 2012; 48(12):686-687
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J.A. Kitchener and B.J. Phillips
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Abstract
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.
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© The Institution of Engineering and Technology 2012