Pub Date : 2023-03-09DOI: 10.1109/CAE56623.2023.10087007
Manuel Germano, Álvaro Fernandez Bocco, Benjamín T. Reyes
This paper presents the schematic and layout design of a fully differential dynamic residue amplifier in 65 nm CMOS technology, with application in a 2-stage SAR-pipelined ADC. A programmable gain is obtained varying both the common-mode current and the amplification time window. The design is verified through post-layout simulations for different PVT conditions. The amplifier achieves a configurable gain Av = 4 ± 15 % with a power consumption range {39–61} μW. For Av = 4, the input referred noise is σn = 93 μV while the distortion is negligible, resulting in an effective number of bits (ENOB) = 5.9 bits. The random offset due to fabrication process mismatches is σos = 5.8mV.
{"title":"A Programmable Gain Dynamic Residue Amplifier in 65nm CMOS","authors":"Manuel Germano, Álvaro Fernandez Bocco, Benjamín T. Reyes","doi":"10.1109/CAE56623.2023.10087007","DOIUrl":"https://doi.org/10.1109/CAE56623.2023.10087007","url":null,"abstract":"This paper presents the schematic and layout design of a fully differential dynamic residue amplifier in 65 nm CMOS technology, with application in a 2-stage SAR-pipelined ADC. A programmable gain is obtained varying both the common-mode current and the amplification time window. The design is verified through post-layout simulations for different PVT conditions. The amplifier achieves a configurable gain Av = 4 ± 15 % with a power consumption range {39–61} μW. For Av = 4, the input referred noise is σn = 93 μV while the distortion is negligible, resulting in an effective number of bits (ENOB) = 5.9 bits. The random offset due to fabrication process mismatches is σos = 5.8mV.","PeriodicalId":212534,"journal":{"name":"2023 Argentine Conference on Electronics (CAE)","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127459465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-09DOI: 10.1109/CAE56623.2023.10086979
G. Maroli, O. A. Aymonino, A. Oliva, J. Gak, P. Julián, F. Palumbo
In this work a low-cost flexible PCB inkjet printing technique that can be used for rapid prototyping in the academia is presented. A flexible printed circuit board was developed and characterized. On this board, an atmospheric discharge circuit system was developed and its performance was compared with the same circuit in a standard FR4 printed circuit board. It is shown that the flexible circuit performs as an equivalent to the standard off-the-shelf system. The cost of producing the prototypes with a CNC router and by inkjet printing was evaluated; the comparison shows that inkjet printing has a great economic advantage.
{"title":"Printed electronics: a low-cost alternative to prototyping in the academic field","authors":"G. Maroli, O. A. Aymonino, A. Oliva, J. Gak, P. Julián, F. Palumbo","doi":"10.1109/CAE56623.2023.10086979","DOIUrl":"https://doi.org/10.1109/CAE56623.2023.10086979","url":null,"abstract":"In this work a low-cost flexible PCB inkjet printing technique that can be used for rapid prototyping in the academia is presented. A flexible printed circuit board was developed and characterized. On this board, an atmospheric discharge circuit system was developed and its performance was compared with the same circuit in a standard FR4 printed circuit board. It is shown that the flexible circuit performs as an equivalent to the standard off-the-shelf system. The cost of producing the prototypes with a CNC router and by inkjet printing was evaluated; the comparison shows that inkjet printing has a great economic advantage.","PeriodicalId":212534,"journal":{"name":"2023 Argentine Conference on Electronics (CAE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114589436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-09DOI: 10.1109/CAE56623.2023.10086973
Nicolás Martín, M. Sofo-Haro, M. Pérez, J. Lipovetzky, M. Valente
Silicon detectors have a limited hard X- and gamma-rays quantum-yield, mostly, devices fabricated in dedicated CMOS process for consumer electronics, where the sensitive volume is formed by the depletion region of a pn-junction of few or fractions of microns. This work reports on a Monte Carlo approach based on the PENELOPE code, to analyze the quantum yield-enhancement of high-Z coatings for Silicon detectors. The performance of different materials has been studied by simulation obtaining that the gadolinium dioxide produces the maximum efficiency of 3% for photons with energy over 50 keV.
{"title":"Monte-Carlo Analysis of Different High-Z Coating Layers as X-rays Detective Quantum Efficiency Intensifiers for Silicon Detectors","authors":"Nicolás Martín, M. Sofo-Haro, M. Pérez, J. Lipovetzky, M. Valente","doi":"10.1109/CAE56623.2023.10086973","DOIUrl":"https://doi.org/10.1109/CAE56623.2023.10086973","url":null,"abstract":"Silicon detectors have a limited hard X- and gamma-rays quantum-yield, mostly, devices fabricated in dedicated CMOS process for consumer electronics, where the sensitive volume is formed by the depletion region of a pn-junction of few or fractions of microns. This work reports on a Monte Carlo approach based on the PENELOPE code, to analyze the quantum yield-enhancement of high-Z coatings for Silicon detectors. The performance of different materials has been studied by simulation obtaining that the gadolinium dioxide produces the maximum efficiency of 3% for photons with energy over 50 keV.","PeriodicalId":212534,"journal":{"name":"2023 Argentine Conference on Electronics (CAE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129578533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-09DOI: 10.1109/CAE56623.2023.10086970
M. V. Cassani, L. S. Salomone, S. Carbonetto, E. Redin, A. Faigón, M. Garcia-Inza
A physics-based numerical model is proposed as a simulation tool to predict the total ionizing dose response of CMOS integrated circuits. The model includes the radiation-induced charge buildup within both the gate oxide of the standard transistors and the bird’s beak parasitic transistor due to LOCOS isolation method. The zero bias radiation response of standard MOSFETs is simulated, showing the difference between n- and p-channel transistors. For high dose levels, the charge buildup in the parasitic transistor leads to an increase of the off-state leakage current for nMOSFET. The radiation response of an inverter is shown as an example of the consequence this increment of the leakage current may cause to the simple CMOS circuit. The model showed to successfully predict the increment in the delay and the failure of the circuit for high absorbed doses.
{"title":"A physics-based numerical modeling of total ionizing dose effects in CMOS integrated circuits","authors":"M. V. Cassani, L. S. Salomone, S. Carbonetto, E. Redin, A. Faigón, M. Garcia-Inza","doi":"10.1109/CAE56623.2023.10086970","DOIUrl":"https://doi.org/10.1109/CAE56623.2023.10086970","url":null,"abstract":"A physics-based numerical model is proposed as a simulation tool to predict the total ionizing dose response of CMOS integrated circuits. The model includes the radiation-induced charge buildup within both the gate oxide of the standard transistors and the bird’s beak parasitic transistor due to LOCOS isolation method. The zero bias radiation response of standard MOSFETs is simulated, showing the difference between n- and p-channel transistors. For high dose levels, the charge buildup in the parasitic transistor leads to an increase of the off-state leakage current for nMOSFET. The radiation response of an inverter is shown as an example of the consequence this increment of the leakage current may cause to the simple CMOS circuit. The model showed to successfully predict the increment in the delay and the failure of the circuit for high absorbed doses.","PeriodicalId":212534,"journal":{"name":"2023 Argentine Conference on Electronics (CAE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129592713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-09DOI: 10.1109/CAE56623.2023.10086984
Kevin H. Viglianco, Daniel R. Garcia, James J. W. Kunst
This work describes the design and implementation of a 4-parallel 128-point pipelined architecture for the fast Fourier transform (FFT) based on the radix-8 butterfly element using folding transformation and registers minimization techniques. In addition, different optimization stages are obtained by applying multiple optimization techniques, including Canonical Signed Digit (CSD) multipliers, quantization, and pipelining. The final result is a high-speed FFT architecture (up to 1.2GS/s) with a reduced area, power consumption, and latency. Finally, this architecture will be implemented in an open-source FreePDK45 of 45 nm CMOS technology.
{"title":"Implementation of a 4-Parallel 128-Point Radix-8 FFT Processor via Folding Transformation","authors":"Kevin H. Viglianco, Daniel R. Garcia, James J. W. Kunst","doi":"10.1109/CAE56623.2023.10086984","DOIUrl":"https://doi.org/10.1109/CAE56623.2023.10086984","url":null,"abstract":"This work describes the design and implementation of a 4-parallel 128-point pipelined architecture for the fast Fourier transform (FFT) based on the radix-8 butterfly element using folding transformation and registers minimization techniques. In addition, different optimization stages are obtained by applying multiple optimization techniques, including Canonical Signed Digit (CSD) multipliers, quantization, and pipelining. The final result is a high-speed FFT architecture (up to 1.2GS/s) with a reduced area, power consumption, and latency. Finally, this architecture will be implemented in an open-source FreePDK45 of 45 nm CMOS technology.","PeriodicalId":212534,"journal":{"name":"2023 Argentine Conference on Electronics (CAE)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130550768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-09DOI: 10.1109/CAE56623.2023.10086983
Tailize C. De-Oliveira, A. Girardi, P. D. de Aguirre, Lucas Compassi-Severo
Harvesting energy from RF signals is a relevant strategy to power ultra-low voltage (ULV) devices. This article presents an RF-EH system with a varactor-based adaptive impedance matching approach to improve the energy conversion from RF-EH to devices without battery. The proposed circuit was designed on a 65-nm CMOS process and is able to generate a stable supply voltage of 0.4 V from a frequency of 915 MHz while reaching a sensitivity of −18.7 dBm and power conversion efficiency of 58.5% in the target operation.
{"title":"A 915-MHz RF-EH with Varactor-Based Adaptive Impedance Matching for ULV Batteryless Devices","authors":"Tailize C. De-Oliveira, A. Girardi, P. D. de Aguirre, Lucas Compassi-Severo","doi":"10.1109/CAE56623.2023.10086983","DOIUrl":"https://doi.org/10.1109/CAE56623.2023.10086983","url":null,"abstract":"Harvesting energy from RF signals is a relevant strategy to power ultra-low voltage (ULV) devices. This article presents an RF-EH system with a varactor-based adaptive impedance matching approach to improve the energy conversion from RF-EH to devices without battery. The proposed circuit was designed on a 65-nm CMOS process and is able to generate a stable supply voltage of 0.4 V from a frequency of 915 MHz while reaching a sensitivity of −18.7 dBm and power conversion efficiency of 58.5% in the target operation.","PeriodicalId":212534,"journal":{"name":"2023 Argentine Conference on Electronics (CAE)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134365538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-09DOI: 10.1109/CAE56623.2023.10086971
Samuel Adrian Cerezo, M. Córdoba, F. P. Quintian
Photocurrent mapping (PM) is a non-destructive characterization method of solar cells and panels. It is used in the industry for quality control in the production of photovoltaic devices, in scientific laboratories to characterize new materials, and in photovoltaic facilities to find module failures. The PM consists of applying a laser light beam perpendicularly on a photovoltaic device, scanning the surface point by point, and measuring the induced current as a function of the position of the beam. These systems require a high degree of mechanical stability, which leads to an increase in the characterization times when the area is large. In recent years, it has been made progress in the use of compressive sensing algorithms applied in PM tests in order to reduce moving parts and the measuring times. In this work we apply the compressive sensing technique to obtain a photocurrent map of Si photovoltaic devices. Results are compared with the ones obtained by the conventional technique.
{"title":"Compressive Sensing Mapping System for Spatial Characterization of Photovoltaic Devices","authors":"Samuel Adrian Cerezo, M. Córdoba, F. P. Quintian","doi":"10.1109/CAE56623.2023.10086971","DOIUrl":"https://doi.org/10.1109/CAE56623.2023.10086971","url":null,"abstract":"Photocurrent mapping (PM) is a non-destructive characterization method of solar cells and panels. It is used in the industry for quality control in the production of photovoltaic devices, in scientific laboratories to characterize new materials, and in photovoltaic facilities to find module failures. The PM consists of applying a laser light beam perpendicularly on a photovoltaic device, scanning the surface point by point, and measuring the induced current as a function of the position of the beam. These systems require a high degree of mechanical stability, which leads to an increase in the characterization times when the area is large. In recent years, it has been made progress in the use of compressive sensing algorithms applied in PM tests in order to reduce moving parts and the measuring times. In this work we apply the compressive sensing technique to obtain a photocurrent map of Si photovoltaic devices. Results are compared with the ones obtained by the conventional technique.","PeriodicalId":212534,"journal":{"name":"2023 Argentine Conference on Electronics (CAE)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132294059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-09DOI: 10.1109/CAE56623.2023.10086978
F. Bessia, Troy England, Hongzhi Sun, D. Braga, M. S. Haro, J. Lipovetzky, J. Estrada, F. Fahim
The MIDNA ASIC is an integrated circuit that implements the analog signal processing blocks needed for reading Skipper Charge-Coupled Devices (CCD). The ASIC has four parallel readout channels, each one comprised by a preamplifier, a DC restore, a buffer and an integrator stage, that provide signal amplification and which perform analog correlated double sampling. MIDNA output is a signal proportional to the amount of charge present in the floating gate node of the CCD and it is digitized by the acquisition system. An analysis of the noise produced by the signal-processing stages of the ASIC and their impact on the output noise is presented. The conclusion is that the integrator operational amplifier low-frequency noise is the most relevant issue for an acquisition and averaging of a large number of samples.
{"title":"Noise analysis of MIDNA Skipper-CCD readout ASIC","authors":"F. Bessia, Troy England, Hongzhi Sun, D. Braga, M. S. Haro, J. Lipovetzky, J. Estrada, F. Fahim","doi":"10.1109/CAE56623.2023.10086978","DOIUrl":"https://doi.org/10.1109/CAE56623.2023.10086978","url":null,"abstract":"The MIDNA ASIC is an integrated circuit that implements the analog signal processing blocks needed for reading Skipper Charge-Coupled Devices (CCD). The ASIC has four parallel readout channels, each one comprised by a preamplifier, a DC restore, a buffer and an integrator stage, that provide signal amplification and which perform analog correlated double sampling. MIDNA output is a signal proportional to the amount of charge present in the floating gate node of the CCD and it is digitized by the acquisition system. An analysis of the noise produced by the signal-processing stages of the ASIC and their impact on the output noise is presented. The conclusion is that the integrator operational amplifier low-frequency noise is the most relevant issue for an acquisition and averaging of a large number of samples.","PeriodicalId":212534,"journal":{"name":"2023 Argentine Conference on Electronics (CAE)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116886861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-09DOI: 10.1109/CAE56623.2023.10087015
J. Lipovetzky, F. Bessia, J. Blostein, M. Pérez, M. S. Haro, J. Longhino, I. Sidelnik, M. G. Berisso
We present the detection of thermal neutrons using a Back Side Illuminated CMOS image sensor covered with a converter layer of sodium borate with a thickness of (20±5) μm. Events caused by neutrons are distinguished from events caused by gamma photons by a charge threshold and geometrical considerations. The detector was irradiated in the BNCT radial beam of the RA6 reactor to prove its potential use in mixed neutron-gamma beams.
{"title":"Thermal neutron detector for mixed neutron and gamma beams using a commercial, boron-coated, CMOS image sensor","authors":"J. Lipovetzky, F. Bessia, J. Blostein, M. Pérez, M. S. Haro, J. Longhino, I. Sidelnik, M. G. Berisso","doi":"10.1109/CAE56623.2023.10087015","DOIUrl":"https://doi.org/10.1109/CAE56623.2023.10087015","url":null,"abstract":"We present the detection of thermal neutrons using a Back Side Illuminated CMOS image sensor covered with a converter layer of sodium borate with a thickness of (20±5) μm. Events caused by neutrons are distinguished from events caused by gamma photons by a charge threshold and geometrical considerations. The detector was irradiated in the BNCT radial beam of the RA6 reactor to prove its potential use in mixed neutron-gamma beams.","PeriodicalId":212534,"journal":{"name":"2023 Argentine Conference on Electronics (CAE)","volume":"230 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126022507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-09DOI: 10.1109/CAE56623.2023.10086981
Christian Conchari, F. Ticona, Mariana Molina, Juan Nina, Misael Mamani, K. Vidaurre, Fabio Díaz
Earth observation, also known as remote sensing, is the collection of data about the Earth’s surface and atmosphere using various remote sensing platforms, such as satellites equipped with imaging instruments. The field of computer vision has been increasingly employed for satellite imagery analysis to extract meaningful information from the data collected. However, the cost of launching and maintaining space-based missions can be prohibitive for certain applications, particularly those requiring low-cost testing. An alternative approach that has gained traction in recent years is the use of stratospheric balloons, which are capable of collecting data at high altitudes at a fraction of the cost and time required for space-based missions. This article presents a workflow for implementing a deep learning-based image classification system for stratospheric balloon imagery. In that sense, the proposed system aims to determine the quality of the images captured, with the ultimate goal of utilizing them for science communication and promoting aerospace projects.
{"title":"Stratospheric balloon earth observation gathered imagery classification through deep learning","authors":"Christian Conchari, F. Ticona, Mariana Molina, Juan Nina, Misael Mamani, K. Vidaurre, Fabio Díaz","doi":"10.1109/CAE56623.2023.10086981","DOIUrl":"https://doi.org/10.1109/CAE56623.2023.10086981","url":null,"abstract":"Earth observation, also known as remote sensing, is the collection of data about the Earth’s surface and atmosphere using various remote sensing platforms, such as satellites equipped with imaging instruments. The field of computer vision has been increasingly employed for satellite imagery analysis to extract meaningful information from the data collected. However, the cost of launching and maintaining space-based missions can be prohibitive for certain applications, particularly those requiring low-cost testing. An alternative approach that has gained traction in recent years is the use of stratospheric balloons, which are capable of collecting data at high altitudes at a fraction of the cost and time required for space-based missions. This article presents a workflow for implementing a deep learning-based image classification system for stratospheric balloon imagery. In that sense, the proposed system aims to determine the quality of the images captured, with the ultimate goal of utilizing them for science communication and promoting aerospace projects.","PeriodicalId":212534,"journal":{"name":"2023 Argentine Conference on Electronics (CAE)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127335425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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