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A 53-nW 9.12-ENOB 1-kS/s SAR ADC in 0.13-um CMOS for medical implant devices
Linköping University, Department of Electrical Engineering, Electronic Devices. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Electronic Devices. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Electronic Devices. Linköping University, The Institute of Technology.
2011 (English)In: Proceedings of the IEEE European Solid-State Circuits Conference (ESSCIRC), Helsinki, Finland: IEEE Solid-State Circuits Society, 2011, 467-470 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper describes an ultra-low-power SAR ADC in 0.13-um CMOS technology for medical implant devices. It utilizes an ultra-low-power design strategy, imposing maximum simplicity in ADC architecture, low transistor count, low-voltage low-leakage circuit techniques, and matched capacitive DAC with a switching scheme which results in full-range sampling without switch bootstrapping and extra reset voltage. Furthermore, a dual-supply scheme allows the SAR logic to operate at 400mV. The ADC has been fabricated in 0.13-um CMOS. In 1.0-V single-supply mode, the ADC consumes 65nW at a sampling rate of 1kS/s, while in dual-supply mode (1.0V for analog and 0.4V for digital) it consumes 53nW (18% reduction) and achieves the same ENOB of 9.12. 24% of the 53-nW total power is due to leakage. To the authors' best knowledge, this is the lowest reported power consumption of a 10-bit ADC for such sampling rates.

Place, publisher, year, edition, pages
Helsinki, Finland: IEEE Solid-State Circuits Society, 2011. 467-470 p.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-73016DOI: 10.1109/ESSCIRC.2011.6045008OAI: oai:DiVA.org:liu-73016DiVA: diva2:464885
Conference
ESSCIRC
Available from: 2011-12-14 Created: 2011-12-14 Last updated: 2014-09-10

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Zhang, DaiBhide, AmeyaAlvandpour, Atila

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