A fully-digital operational transconductance amplifier (DIGOTA) architecture for tightly energy-constrained low-cost systems is presented. A 180nm DIGOTA testchip exhibits an area below the 1,000-μm2 wall, and 2.4-nW power under 150pF load, and a minimum supply voltage Vmin of 0.25 V. In the 0.3-0.5 V supply range, DIGOTA improves the areanormalized small (large) signal energy FoM by at least 836X (267X) over prior sub-500mV OTAs, while reducing area by 27-85X. The low-Vmin and nW-power features are shown to enable direct harvesting at the mm scale.
Fully-Digital Rail-to-Rail OTA with Sub-1,000 μm2 Area, 250-mV Minimum Supply and nW Power at 150-pF Load in 180nm / Pedro, Toledo; Crovetti, Paolo Stefano; Aiello, Orazio; Alioto, Massimo. - In: IEEE SOLID-STATE CIRCUITS LETTERS. - ISSN 2573-9603. - STAMPA. - (2020).
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Titolo: | Fully-Digital Rail-to-Rail OTA with Sub-1,000 μm2 Area, 250-mV Minimum Supply and nW Power at 150-pF Load in 180nm |
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Data di pubblicazione: | 2020 |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1109/LSSC.2020.3027666 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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SSC-L-Jul-20-0188R1_FINAL_TEXT.pdf | Post-print non editoriale | 2. Post-print / Author's Accepted Manuscript | PUBBLICO - Tutti i diritti riservati | Visibile a tuttiVisualizza/Apri |
http://hdl.handle.net/11583/2847081