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J. Low Power Electron. Appl. 2011, 1(2), 247-260; doi:10.3390/jlpea1020247
Article

Energy Efficient Supply Boosted Comparator Design

Department of Electrical and Computer Engineering, University of Idaho, Moscow, ID 83844, USA
Received: 6 April 2011 / Revised: 13 June 2011 / Accepted: 20 June 2011 / Published: 24 June 2011
(This article belongs to the Special Issue Low Power Design Methodologies and Applications)
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Abstract

This paper presents a new mixed-signal design technique called supply boosting technique (SBT) and the design of an energy efficient, sub-1 V supply boosted comparator (SBC) in a standard complementary metal oxide semiconductor (CMOS) process. The selected CMOS process does not allow sub-1 V operation with a wide input range due to high threshold voltage (high-VTH) of MOS transistors (+0.8 V/−0.9 V). Despite this, the proposed comparator operates sub-1 V supply voltages with input common mode voltage larger than 60% of supply voltage by utilizing a supply boosting technique. The measured power consumption of the supply boosted comparator for 1 V supply was 90 nW and speed was 6500 conversions per second, resulting in 14 pJ per conversion energy efficiency.
Keywords: supply boosting; mixed-signal design; low-voltage design; comparator supply boosting; mixed-signal design; low-voltage design; comparator
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Ay, S.U. Energy Efficient Supply Boosted Comparator Design. J. Low Power Electron. Appl. 2011, 1, 247-260.

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J. Low Power Electron. Appl. EISSN 2079-9268 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert