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2021 International Conference on IC Design and Technology (ICICDT)最新文献

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System and Technology Co-optimization for RRAM based Computation-in-memory Chip 基于RRAM的内存计算芯片的系统与技术协同优化
Pub Date : 2021-09-15 DOI: 10.1109/ICICDT51558.2021.9626398
Yuyi Liu, B. Gao
In order to improve accuracy and robustness of RRAM based computation-in-memory chip, device-circuit-algorithm co-optimization with consideration of underlying device and array nonidealities should outperform the individual optimization of device or algorithm. In this work, we provide a device-circuit-algorithm simulation framework and propose the corresponding design guidelines. The simulation framework supports both inference and on-chip training, and a physics-based device model for analog RRAM is embedded to the framework to benchmark the CIM system. Nonideal effects and reliability issues of analog RRAM device are fully considered. Besides, array IR-drop and peripheral circuit are also modeled. Based on the evaluation results, optimization guidelines to suppress the impact of device nonidealities, reliability degradation and array IR-drop are proposed. This work provides a useful end-to-end co-design tool for developing large-scale computation-in-memory systems.
为了提高基于RRAM的内存计算芯片的精度和鲁棒性,考虑底层器件和阵列非理想性的器件-电路-算法协同优化应优于器件或算法的单独优化。在这项工作中,我们提供了一个器件-电路-算法仿真框架,并提出了相应的设计准则。仿真框架支持推理和片上训练,并将模拟RRAM的基于物理的设备模型嵌入到框架中以对CIM系统进行基准测试。充分考虑了模拟随机存储器器件的非理想效应和可靠性问题。此外,还对阵列的红外降和外围电路进行了建模。根据评估结果,提出了抑制器件非理想性、可靠性退化和阵列红外下降影响的优化准则。这项工作为开发大规模内存计算系统提供了一个有用的端到端协同设计工具。
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引用次数: 2
Water-induced Combustion-processed Metal-oxide Synaptic Transistor 水致燃烧加工金属氧化物突触晶体管
Pub Date : 2021-09-15 DOI: 10.1109/ICICDT51558.2021.9626483
Qihan Liu, C. Zhao, Y. Liu, I. Mitrovic, Wangying Xu, Li Yang, Z. Wang, W. Wei, Y. Wu, X. Yu
In this study, we describe combustion-processed high-quality Li-AlOx thin films and their implementation in In-2O3 synaptic transistors by a low temperatures (300 °C) water-based method. The resulting synaptic transistors presented a superior electrical performance at a low operating voltage of 3 V, with a positive threshold voltage of 0.5 V, a subthreshold swing of 0.21 V/decade, an On/Off ratio of 1.5×105, and a mobility value of 87 cm2 V−1 s−1. Counterclockwise hysteresis was observed in the transfer curve and the synaptic transistor was employed to perform synaptic emulation. Long-term and short-term synaptic depression and potentiation behavior were emulated.
在这项研究中,我们描述了燃烧处理的高质量Li-AlOx薄膜,并通过低温(300°C)水基方法在In- 2o3突触晶体管中实现了它们。所制得的突触晶体管在3v的低工作电压下具有优异的电学性能,其正阈值电压为0.5 V,亚阈值摆幅为0.21 V/decade,开/关比为1.5×105,迁移率为87 cm2 V−1 s−1。在传递曲线上观察到逆时针磁滞,并采用突触晶体管进行突触仿真。模拟长期和短期突触抑制和增强行为。
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引用次数: 0
A Realizable Digital Bubble Sorting SAR ADC Calibration Technology 一种可实现的数字气泡排序SAR ADC校准技术
Pub Date : 2021-09-15 DOI: 10.1109/ICICDT51558.2021.9626536
Hua Fan, Yunan Wang, Xinjie Wu
This paper proposes a SAR ADC front-end calibration technique based on sorting and recombination of capacitor arrays to mitigate the impact of capacitor mismatch on the performance of high-precision SAR ADCs. This method performs proper and effective sorting and reconstruction of the unit capacitors in the capacitor array before the SAR ADC performs data conversion. In addition, an achievable digital bubble sorting module is proposed to be used in this sorting scheme, which overcomes the limitation that the analog bubble sorting module cannot be applied to high-precision SAR ADC due to the complexity of the analog bubble sorting module. For the C-DAC using N unit capacitors, a digital bubble sorting circuit is used instead of an analog bubble sorting circuit, which can reduce the number of digital-to-analog connection signal lines from N2 to N. A 1 MS/s 8-bit SAR ADC is designed based on XFAB 0.18 μm process to verify this method. The results show that before and after calibration, SNDR is increased by 3.6 dB, SFDR is increased by 11.9 dB, and ENOB can reach 7.9. The method is simple and reliable, and is suitable for various SAR ADCs based on charge redistribution structures.
针对高精度SAR ADC中电容失配对性能的影响,提出了一种基于电容阵列排序和重组的SAR ADC前端标定技术。该方法在SAR ADC进行数据转换之前,对电容阵列中的单元电容进行了适当有效的排序和重构。此外,提出了一种可实现的数字冒泡排序模块用于该排序方案,克服了模拟冒泡排序模块由于模拟冒泡排序模块的复杂性而无法应用于高精度SAR ADC的限制。对于采用N单元电容的C-DAC,采用数字气泡分选电路代替模拟气泡分选电路,可将数模连接信号线数从N2减少到N,并设计了基于XFAB 0.18 μm工艺的1 MS/s 8位SAR ADC来验证该方法。结果表明,标定前后,SNDR提高了3.6 dB, SFDR提高了11.9 dB, ENOB可达到7.9。该方法简单可靠,适用于各种基于电荷重分配结构的SAR adc。
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引用次数: 1
Variability Effects in FinFET Transistors and Emerging NC-FinFET FinFET晶体管和新兴NC-FinFET的可变性效应
Pub Date : 2021-09-15 DOI: 10.1109/ICICDT51558.2021.9626531
Aniket Gupta, Nitanshu Chauhan, Om. Prakash, H. Amrouch
This work investigates, the impact of different variability sources 14nm FinFET transistors compared to their counterpart Negative Capacitance FinFETs transistors. We focus on NC-FinFETs that are constructed in a Metal–Ferroelectric–Insulator–Semiconductor (MFIS) configuration, unlike existing state of the art, which employs Metal–Ferroelectric–Metal-Insulator–Semiconductor (MFMIS) structure in its variability analysis. Our investigation confirms that the existing conclusion, in which NC-FinFETs exhibit a higher immunity against variation, still holds even in MFIS structure. We study the impact that each of (1) random dopant fluctuation, (2) work-function variation, (3) HfO2 dielectric surface roughness, (4) interfacial layer surface roughness, and (5) ferroelectric variation has individually and jointly on the threshold voltage, sub-threshold swing, ON current and OFF current of NC-nFinFETs and NC-pFinFETs in comparison to their counterpart (baseline) FinFET devices.
本研究研究了14nm FinFET晶体管与其对应的负电容FinFET晶体管相比,不同可变性源的影响。我们专注于以金属-铁电-绝缘体-半导体(MFIS)结构构建的nc - finfet,不像现有的技术状态,它在其可变性分析中采用金属-铁电-金属-绝缘体-半导体(MFMIS)结构。我们的研究证实了现有的结论,即nc - finfet具有更高的抗变异免疫力,即使在MFIS结构中仍然成立。我们研究了(1)随机掺杂波动,(2)功函数变化,(3)HfO2介电表面粗糙度,(4)界面层表面粗糙度和(5)铁电变化分别和共同对nc - nfinfet和nc - pfinfet的阈值电压,亚阈值摆幅,on电流和OFF电流的影响,并与它们对应的(基线)FinFET器件进行比较。
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引用次数: 4
Understanding Generated RTN as an Entropy Source for True Random Number Generators 理解生成的RTN作为真随机数生成器的熵源
Pub Date : 2021-09-15 DOI: 10.1109/ICICDT51558.2021.9626499
Zhigang Ji, Jianfu Zhang
Future secure communication relies on the true Random number Generator (TRNG), of which the random source is of most importance for offering high entropy. The random telegraph noise (RTN) in nano-scaled devices show excellent randomness, however, RTN-based TRNG suffer from relatively large area and low speed. Here we introduce our recently-proposed solutions to tackle these two issues. Then we performed systematic analysis based on Monte Carlo simulation to understand the impact of design parameters on its practical performance, shedding light on the practical circuit design.
未来的安全通信依赖于真随机数发生器(TRNG),其中最重要的是随机源具有高熵特性。随机电报噪声(RTN)在纳米级器件中表现出良好的随机性,但基于RTN的TRNG存在面积较大、速度较慢的问题。在这里,我们介绍我们最近提出的解决这两个问题的方案。然后基于蒙特卡罗仿真进行系统分析,了解设计参数对其实际性能的影响,为实际电路设计提供参考。
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引用次数: 1
IC Design & Technology Co-Development: e-NVM & mmWave enablement of 22FDX™ Technology 集成电路设计与技术合作开发:22FDX™技术的e-NVM和毫米波支持
Pub Date : 2021-09-15 DOI: 10.1109/ICICDT51558.2021.9626492
S. Kolodinski, H. Eisenreich, S. Lehmann, J. Müller
In this contribution we present two cases of specialized variants for 22FDXTM technology in which detailed Design and Technology co-development is needed. (1) The e-NVM-variant perpendicular Spin Transfer Torque needed development of characterization techniques for the characterization of magnetic properties and STT-current and at the same time a demonstrator was developed that makes effective use of the Back-Biasing for leakage reduction. (2) Furthermore, the mmWave derivative requires characterization of functionality up to 100 GHz and far beyond, while at the same time showcases on 5G auto-radar and imaging radar could be started.
在这篇文章中,我们提出了22FDXTM技术的两个特殊变体案例,其中需要详细的设计和技术共同开发。(1) e- nvm型垂直自旋传递扭矩需要开发表征技术来表征磁性和stt电流,同时开发了一个验证器,可以有效地利用反偏置来减少泄漏。(2)此外,毫米波衍生产品需要表征高达100 GHz甚至更高的功能,同时可以启动5G自动雷达和成像雷达的展示。
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引用次数: 0
High-sensitivity AlGaN/GaN magnetoresistive sensor device by profiling the AlGaN layer 高灵敏度AlGaN/GaN磁阻传感器器件
Pub Date : 2021-09-15 DOI: 10.1109/ICICDT51558.2021.9626529
Lingxi Xia, YungC . Liang
By profiling the AlGaN layer, the sensitivity of the AlGaN/GaN high-electron-mobility magnetoresistive sensor device can be much enhanced. The previous work on fin-shaped magnetoresistive devices had demonstrated the effect on transitioning the AlGaN profile. In this study, the design is based on a staircase-shaped profile for the sensor, which leads to a unique 2DEG distribution in the transition region. Such a design yields a more stable and higher sensitivity in the measurement of magnetic field in micro-Tesla level.
通过对AlGaN层的分析,可以大大提高AlGaN/GaN高电子迁移率磁阻传感器器件的灵敏度。先前在鳍形磁阻器件上的工作已经证明了对AlGaN剖面过渡的影响。在本研究中,设计基于传感器的阶梯形轮廓,这导致了过渡区域独特的2度分布。这种设计在微特斯拉水平的磁场测量中具有更稳定和更高的灵敏度。
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引用次数: 0
A Multi-Layered Air-Gap Transmission Line Design for CMOS-Compatible Millimeter-Wave ICs 兼容cmos的毫米波集成电路多层气隙传输线设计
Pub Date : 2021-09-15 DOI: 10.1109/ICICDT51558.2021.9626538
Shenjian Zhang, S. Lam
A compact and chip-area efficient transmission line design is proposed for monolithic millimeter-wave integrated circuits. Performance improvement is achieved by the use of multi-layered air-gaps compatible to CMOS fabrication. Based on a 65-nm CMOS process, the on-chip transmission line occupies less than 17 μm in width and 8 μm in height while active devices and circuits can still be fabricated with interconnect routing right beneath the shielded structure of the transmission line. The semi-enclosed structure allows the tuning of the characteristic impedance. 3D electromagnetic simulations give results of 1.8 dB/mm insertion loss and a reflection coefficient of −28 dB at 60 GHz, for a 50-ohm matched design. The multi-layered air-gap design allows the current density more uniformly distributed in the signal-carrying conductor compared with a counterpart design without air-gaps.
针对单片毫米波集成电路,提出了一种结构紧凑、芯片面积高效的传输线设计方案。性能改进是通过使用与CMOS制造兼容的多层气隙实现的。基于65nm的CMOS工艺,片上传输线的宽度小于17 μm,高度小于8 μm,而有源器件和电路仍然可以在传输线屏蔽结构的正下方制作互连路由。半封闭结构允许特性阻抗的调谐。对于50欧姆匹配设计,3D电磁仿真结果显示插入损耗为1.8 dB/mm, 60 GHz时反射系数为−28 dB。与没有气隙的设计相比,多层气隙设计允许电流密度更均匀地分布在承载信号的导体中。
{"title":"A Multi-Layered Air-Gap Transmission Line Design for CMOS-Compatible Millimeter-Wave ICs","authors":"Shenjian Zhang, S. Lam","doi":"10.1109/ICICDT51558.2021.9626538","DOIUrl":"https://doi.org/10.1109/ICICDT51558.2021.9626538","url":null,"abstract":"A compact and chip-area efficient transmission line design is proposed for monolithic millimeter-wave integrated circuits. Performance improvement is achieved by the use of multi-layered air-gaps compatible to CMOS fabrication. Based on a 65-nm CMOS process, the on-chip transmission line occupies less than 17 μm in width and 8 μm in height while active devices and circuits can still be fabricated with interconnect routing right beneath the shielded structure of the transmission line. The semi-enclosed structure allows the tuning of the characteristic impedance. 3D electromagnetic simulations give results of 1.8 dB/mm insertion loss and a reflection coefficient of −28 dB at 60 GHz, for a 50-ohm matched design. The multi-layered air-gap design allows the current density more uniformly distributed in the signal-carrying conductor compared with a counterpart design without air-gaps.","PeriodicalId":6737,"journal":{"name":"2021 International Conference on IC Design and Technology (ICICDT)","volume":"15 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75212283","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}
引用次数: 1
Large-scale Integrated Circuits Simulation Based on CNT-FET Model 基于碳纳米管-场效应管模型的大规模集成电路仿真
Pub Date : 2021-09-15 DOI: 10.1109/ICICDT51558.2021.9626539
Zhikai Wang, Wenfei Hu, Ziyu Gu, Wenyuan Zhang, S.-D. Yin, Ruitao Wang, Jian Zhang, Yan Wang
Carbon nanotube field-effect transistor (CNT-FET), as a kind of efficient device, is expected to be the mainstream product of complementary metal–oxide–semi-conductor (CMOS) integrated circuits (ICs). The simulation based on SPICE model plays a significant role before ICs been fabricated. However, most of the previous circuits and simulations are based on only P-type CNT model. In this paper, we build N-type and P-type CNT model by denominator numerator fit (DNFIT) technique, perform successfully large-scale (>1000) CNT CMOS ICs simulation on CADENCE for the first time. The simulation results show that large scale CNT CMOS ICs can achieve correct logic performance.
碳纳米管场效应晶体管(CNT-FET)作为一种高效器件,有望成为互补金属氧化物半导体(CMOS)集成电路的主流产品。在集成电路制造前,基于SPICE模型的仿真具有重要的意义。然而,以往大多数电路和仿真都是基于p型碳纳米管模型。本文采用DNFIT(分母分子拟合)技术建立了n型和p型碳纳米管模型,并首次在CADENCE上成功进行了大规模(bbb1000)碳纳米管CMOS模拟。仿真结果表明,大规模碳纳米管CMOS集成电路可以实现正确的逻辑性能。
{"title":"Large-scale Integrated Circuits Simulation Based on CNT-FET Model","authors":"Zhikai Wang, Wenfei Hu, Ziyu Gu, Wenyuan Zhang, S.-D. Yin, Ruitao Wang, Jian Zhang, Yan Wang","doi":"10.1109/ICICDT51558.2021.9626539","DOIUrl":"https://doi.org/10.1109/ICICDT51558.2021.9626539","url":null,"abstract":"Carbon nanotube field-effect transistor (CNT-FET), as a kind of efficient device, is expected to be the mainstream product of complementary metal–oxide–semi-conductor (CMOS) integrated circuits (ICs). The simulation based on SPICE model plays a significant role before ICs been fabricated. However, most of the previous circuits and simulations are based on only P-type CNT model. In this paper, we build N-type and P-type CNT model by denominator numerator fit (DNFIT) technique, perform successfully large-scale (>1000) CNT CMOS ICs simulation on CADENCE for the first time. The simulation results show that large scale CNT CMOS ICs can achieve correct logic performance.","PeriodicalId":6737,"journal":{"name":"2021 International Conference on IC Design and Technology (ICICDT)","volume":"21 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87224111","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}
引用次数: 0
A 50K devices/sec Real-Time RTN Analysis System for Technology Benchmarking 50K器件/秒实时RTN技术标杆分析系统
Pub Date : 2021-09-15 DOI: 10.1109/ICICDT51558.2021.9626494
Chin-Hao Chang, Meng-Hsiu Wu, Meng-Hsien Tsai, Chiao-Yi Huang, C. Chao
Random Telegraph Noise (RTN) is a type of electronic noise that occurs in semiconductors and ultra-thin gate oxide films. RTN data acquisition and analysis require multiple measurements of millions of devices which is time consuming. This paper presents the design of a real-time RTN analysis system which achieved 17x speed boost with same accuracy by real-time processing noise data through DDR3 memory access. The designed system reduces the per wafer RTN analysis time from 5.5 hours to 0.33 hour.
随机电报噪声(RTN)是发生在半导体和超薄栅氧化膜中的一种电子噪声。RTN数据采集和分析需要对数以百万计的设备进行多次测量,这非常耗时。本文设计了一种实时RTN分析系统,通过对DDR3存储器的访问,对噪声数据进行实时处理,在相同精度的情况下实现了17倍的速度提升。设计的系统将每个晶圆的RTN分析时间从5.5小时减少到0.33小时。
{"title":"A 50K devices/sec Real-Time RTN Analysis System for Technology Benchmarking","authors":"Chin-Hao Chang, Meng-Hsiu Wu, Meng-Hsien Tsai, Chiao-Yi Huang, C. Chao","doi":"10.1109/ICICDT51558.2021.9626494","DOIUrl":"https://doi.org/10.1109/ICICDT51558.2021.9626494","url":null,"abstract":"Random Telegraph Noise (RTN) is a type of electronic noise that occurs in semiconductors and ultra-thin gate oxide films. RTN data acquisition and analysis require multiple measurements of millions of devices which is time consuming. This paper presents the design of a real-time RTN analysis system which achieved 17x speed boost with same accuracy by real-time processing noise data through DDR3 memory access. The designed system reduces the per wafer RTN analysis time from 5.5 hours to 0.33 hour.","PeriodicalId":6737,"journal":{"name":"2021 International Conference on IC Design and Technology (ICICDT)","volume":"24 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90302863","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}
引用次数: 0
期刊
2021 International Conference on IC Design and Technology (ICICDT)
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