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- W3172055360 abstract "This article introduces a compact NMOS-only voltage reference that is able to operate down to a 0.25-V supply voltage and 5.4-pW power consumption. This allows reliable generation of a stable output voltage even in harvested systems under highly uncertain environmental conditions. At the system level, pW-power, 0.25–1.8-V operation, and a competitive power supply rejection ratio (PSRR) relax or eliminate the need for intermediate power conversion and supply regulation for additional power and cost reductions. The proposed voltage reference is based on a body biasing scheme assisted by replica well biasing to compensate voltage and temperature fluctuations. A 180-nm test chip shows that the proposed reference occupies an area of <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$2200~mu text{m}^{2}$ </tex-math></inline-formula> , while providing 91.4-mV output voltage with 0.51-mV (0.56%) standard deviation, <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$24.2~mu text{V}/^{circ }text{C}$ </tex-math></inline-formula> (265 ppm/°C) temperature coefficient, and <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$144.5~mu text{V}$ </tex-math></inline-formula> /V (0.16%/V) line sensitivity across 30 dice from the same manufacturing lot. The resulting absolute output voltage accuracy without any trimming is 2.8 mV at 3- <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$sigma $ </tex-math></inline-formula> variations, 0.3-V fluctuation, and temperature change by 50 °C, improving on prior art by 1.4– <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$19.7times $ </tex-math></inline-formula> . Overall, the capability of reliable operating down to ultralow voltages, pW-power, and the inherently small footprint make the proposed reference well suited for low-cost tightly constrained systems." @default.
- W3172055360 created "2021-06-22" @default.
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- W3172055360 date "2021-10-01" @default.
- W3172055360 modified "2023-10-03" @default.
- W3172055360 title "Trimming-Less Voltage Reference for Highly Uncertain Harvesting Down to 0.25 V, 5.4 pW" @default.
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- W3172055360 doi "https://doi.org/10.1109/jssc.2021.3081440" @default.
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