Rail to Rail ICMR and High Performance ULV Standard-Cell-Based Comparator for Biomedical and IoT Applications

In this paper a novel ultra-low voltage (ULV) standard-cell-based comparator which provides rail-to-rail input common-mode range (ICMR) is presented. The topology, unlike the others in the literature, uses only 2-inputs NAND gates and is able to operate with supply voltages as low as 0.15V. A detail...

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Main Authors: Riccardo Della Sala, Francesco Centurelli, Giuseppe Scotti, Gaetano Palumbo
Format: Article
Language:English
Published: IEEE 2024-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/10379626/
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author Riccardo Della Sala
Francesco Centurelli
Giuseppe Scotti
Gaetano Palumbo
author_facet Riccardo Della Sala
Francesco Centurelli
Giuseppe Scotti
Gaetano Palumbo
author_sort Riccardo Della Sala
collection DOAJ
description In this paper a novel ultra-low voltage (ULV) standard-cell-based comparator which provides rail-to-rail input common-mode range (ICMR) is presented. The topology, unlike the others in the literature, uses only 2-inputs NAND gates and is able to operate with supply voltages as low as 0.15V. A detailed theoretical analysis based on transistor level modeling is provided to explain the operating principle and highlight the performance advantages of the proposed comparator. The circuit has been tested through several simulations, including corner analysis and Monte Carlo runs, by using three different technologies: 180 nm, 130 nm and 28 nm for both a supply voltage of 0.3 V and 0.15 V. The results found not only confirm the robustness of the proposed comparator, but also demonstrate very advantageous performances. Indeed, for the same technology node it exhibits the highest speed and the lowest EDP (about ten times lower than the one of the others standard-cell-based comparators in the literature). It exhibits also the lowest power consumption and silicon area.
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spelling doaj.art-0e94d950f23c4ecb8b82b5d76183e8bd2024-01-12T00:01:32ZengIEEEIEEE Access2169-35362024-01-01124642465910.1109/ACCESS.2023.334924410379626Rail to Rail ICMR and High Performance ULV Standard-Cell-Based Comparator for Biomedical and IoT ApplicationsRiccardo Della Sala0https://orcid.org/0000-0001-9990-4875Francesco Centurelli1https://orcid.org/0000-0003-3880-2546Giuseppe Scotti2https://orcid.org/0000-0002-5650-8212Gaetano Palumbo3DIET, Universitã degli Studi di Roma “La Sapienza,”, Rome, ItalyDIET, Universitã degli Studi di Roma “La Sapienza,”, Rome, ItalyDIET, Universitã degli Studi di Roma “La Sapienza,”, Rome, ItalyDIEEI, Universitã degli Studi di Catania, Catania, ItalyIn this paper a novel ultra-low voltage (ULV) standard-cell-based comparator which provides rail-to-rail input common-mode range (ICMR) is presented. The topology, unlike the others in the literature, uses only 2-inputs NAND gates and is able to operate with supply voltages as low as 0.15V. A detailed theoretical analysis based on transistor level modeling is provided to explain the operating principle and highlight the performance advantages of the proposed comparator. The circuit has been tested through several simulations, including corner analysis and Monte Carlo runs, by using three different technologies: 180 nm, 130 nm and 28 nm for both a supply voltage of 0.3 V and 0.15 V. The results found not only confirm the robustness of the proposed comparator, but also demonstrate very advantageous performances. Indeed, for the same technology node it exhibits the highest speed and the lowest EDP (about ten times lower than the one of the others standard-cell-based comparators in the literature). It exhibits also the lowest power consumption and silicon area.https://ieeexplore.ieee.org/document/10379626/CMOSdynamic comparatorlogic gatesanalog-to-digital conversion (ADC)
spellingShingle Riccardo Della Sala
Francesco Centurelli
Giuseppe Scotti
Gaetano Palumbo
Rail to Rail ICMR and High Performance ULV Standard-Cell-Based Comparator for Biomedical and IoT Applications
IEEE Access
CMOS
dynamic comparator
logic gates
analog-to-digital conversion (ADC)
title Rail to Rail ICMR and High Performance ULV Standard-Cell-Based Comparator for Biomedical and IoT Applications
title_full Rail to Rail ICMR and High Performance ULV Standard-Cell-Based Comparator for Biomedical and IoT Applications
title_fullStr Rail to Rail ICMR and High Performance ULV Standard-Cell-Based Comparator for Biomedical and IoT Applications
title_full_unstemmed Rail to Rail ICMR and High Performance ULV Standard-Cell-Based Comparator for Biomedical and IoT Applications
title_short Rail to Rail ICMR and High Performance ULV Standard-Cell-Based Comparator for Biomedical and IoT Applications
title_sort rail to rail icmr and high performance ulv standard cell based comparator for biomedical and iot applications
topic CMOS
dynamic comparator
logic gates
analog-to-digital conversion (ADC)
url https://ieeexplore.ieee.org/document/10379626/
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