PROJECT TITLE :
Starved picowatt oscillator for remote sensor wake-up timer
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's created from a 5-stage ring of inverters in which the switching speed is reduced using transistors that are perpetually-off, or starved. Fabricated in an exceedingly zero.35 μm process, the oscillator and its active load dissipate eighty pW at 1.five Hz from a one V supply at 22°C.
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