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2016 International Symposium on VLSI Technology, Systems and Application (VLSI-TSA)最新文献

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Atomistic simulation of gate-all-around GaSb/InAs nanowire TFETs using a fast full-band mode-space NEGF model 栅极全能GaSb/InAs纳米线tfet的快速全频带模式空间NEGF模型原子模拟
Pub Date : 2016-04-25 DOI: 10.1109/VLSI-TSA.2016.7480492
A. Afzalian, M. Passlack, Y. Yeo
Atomistic device simulations are presented to assess the potential of InAs/GaSb GAA NW n- and p-TFETs with diameter d of 5.45 nm. Using a recent breakthrough in atomistic modeling, more than 100× reduction in simulation time was achieved using a tight binding mode-space approach. This enabled full-band transport simulation for a device with ~100,000 atoms, employing an accurate sp3s*SO (10 orbitals/atom) tight binding basis. At IOFF of 10 pA/μm, an optimized n-TFET with a pocket region is predicted to have ION of 46 and 196 μA/μm at VDD of 0.3, and 0.5 V, respectively. This achieves a better energy-delay product than its MOSFET counterpart. Through careful design, similar performance can be achieved for p- and n- TFETs.
采用原子器件模拟的方法对直径为5.45 nm的InAs/GaSb GAA NW n-和p- tfet的潜力进行了评估。利用原子建模的最新突破,使用紧密绑定模式空间方法将仿真时间减少了100倍以上。利用精确的sp3s*SO(10个轨道/原子)紧密结合基础,实现了具有~100,000个原子的器件的全波段传输模拟。在IOFF为10 pA/μm时,在VDD为0.3和0.5 V时,优化后的带口袋区的n-TFET离子强度分别为46和196 μA/μm。这实现了比其MOSFET对应物更好的能量延迟产品。通过精心设计,p-和n- tfet可以达到相似的性能。
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引用次数: 3
Industrialization of Si-Photonics into a 300mm CMOS fab 硅光子学在300mm CMOS晶圆厂的产业化
Pub Date : 2016-04-25 DOI: 10.1109/VLSI-TSA.2016.7480504
F. Boeuf, Kirk Ouellette
Recently Silicon Photonics received a lot of interest due to the increased need of high-data rate and low-cost transceivers in datacenters, mainly driven by cloud applications. In this paper we will demonstrate the industrialization of Si-Photonics in a CMOS fab addressing the datacenter market and more particularly the 100Gbits/s PSM-4 standard operating at 1310nm wavelength.
最近,由于数据中心对高数据速率和低成本收发器的需求增加,主要受云应用的驱动,硅光子学受到了很多关注。在本文中,我们将展示Si-Photonics在CMOS晶圆厂中的产业化,以解决数据中心市场,特别是在1310nm波长下工作的100Gbits/s PSM-4标准。
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引用次数: 3
ReRAM-based analog synapse and IMT neuron device for neuromorphic system 神经形态系统基于reram的模拟突触及IMT神经元装置
Pub Date : 2016-04-25 DOI: 10.1109/VLSI-TSA.2016.7480499
Kibong Moon, E. Cha, Daeseok Lee, Junwoo Jang, Jaesung Park, H. Hwang
We report nanoscale oxide based analog synpase device and Insulator-Metal-Transition (IMT) oscillator neuron device for neuromorphic system [1,2]. By controlling the redox reaction at Metal/Pr0.7Ca0.3MnO3 (PCMO) interface, we can control synapse characteristics such as switching uniformity, disturbance, retention and multi-level data storage under identical pulse condition. Among various metal electrodes, we found that Mo electrode shows the best data retention characteristics. Using IMT characteristics of NbO2 film, we developed IMT oscillator for neuron application. We have experimentally confirmed the realization of pattern recognition with high accuracy using the Mo/PCMO synapse array and NbO2 oscillator neuron.
我们报道了基于纳米级氧化物的模拟突触酶装置和用于神经形态系统的绝缘体-金属-过渡(IMT)振荡器神经元装置[1,2]。通过控制金属/Pr0.7Ca0.3MnO3 (PCMO)界面上的氧化还原反应,可以在相同脉冲条件下控制突触的开关均匀性、扰动、保留和多级数据存储等特性。在各种金属电极中,我们发现Mo电极具有最好的数据保留特性。利用NbO2薄膜的IMT特性,研制了神经元用IMT振荡器。实验证实了使用Mo/PCMO突触阵列和NbO2振荡神经元实现高精度的模式识别。
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引用次数: 13
Compact modeling and simulation of TSV with experimental verification TSV的紧凑建模与仿真,并进行了实验验证
Pub Date : 2016-04-25 DOI: 10.1109/VLSI-TSA.2016.7480488
Jhih-Yang Yan, Sun-Rong Jan, Yi-Chung Huang, H. Lan, C. W. Liu, Y.-H. Huang, B. Hung, K.T. Chan, Michael Huang, M. Yang
Impact of via-last through-silicon via (TSV) on 28nm node devices is investigated. The stress field of TSV is affected by the back-end-of-line (BEOL) dielectrics. The absolute value of radial stress (|σr|) is different from that of tangential stress (|σθ|) on silicon, which leads to the asymmetric keep-out zone (KOZ). The physics behind the asymmetry is also described. A modified KOZ model considering the asymmetric stress field is proposed and verified by experiment data.
研究了最后通硅通孔(TSV)对28nm节点器件的影响。TSV的应力场受后端介质(BEOL)的影响。硅表面的径向应力绝对值(|σr|)与切向应力绝对值(|σθ|)不同,导致不对称保持区(KOZ)的形成。本文还描述了不对称背后的物理原理。提出了一种考虑非对称应力场的修正KOZ模型,并用实验数据进行了验证。
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引用次数: 1
Fine charge sensing using a silicon nanowire for biodetection 利用硅纳米线进行生物检测的精细电荷传感
Pub Date : 2016-04-25 DOI: 10.1109/VLSI-TSA.2016.7480537
C. Carmignani, O. Rozeau, P. Scheiblin, A. Thuaire, P. Reynaud, S. Barraud, T. Ernst, S. Chéramy, M. Vinet
This paper proposes an extensive analysis of the impact of both structural effect and charge parameters on silicon nanowire-based biological sensors, for single-charge detection. These parameters are calibrated on physical and electrical characterizations and are subsequently introduced in a compact model to predict the signal over noise ratio (SNR). We finally propose rules for the design of nanowires and recommendations for the placement of the biological element, inducing the single charge release.
本文广泛分析了结构效应和电荷参数对硅纳米线生物传感器单电荷检测的影响。这些参数在物理和电气特性上进行校准,然后引入一个紧凑的模型来预测信噪比(SNR)。最后,我们提出了纳米线的设计规则和生物元件的放置建议,以诱导单电荷释放。
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引用次数: 1
Comprehensive study of intrinsic unipolar SiOx-based ReRAM characteristics in AC frequency response and low voltage (< 2V) operation 综合研究基于siox的本征单极ReRAM在交流频率响应和低电压(< 2V)工作中的特性
Pub Date : 2016-04-25 DOI: 10.1109/VLSI-TSA.2016.7480497
Ying‐Chen Chen, Yao‐Feng Chang, B. Fowler, F. Zhou, Xiaohan Wu, C. Hsieh, H. Chang, Chih-Hung Pan, Min-Chen Chen, Kuan‐Chang Chang, T. Tsai, T. Chang, Jack C. Lee
Intrinsic unipolar SiOx-based Resistive-RAM (ReRAM) characteristics have been investigated. The cross-bar MIM structures have been examined under AC frequency response, by varying device area, temperature and current states. The results provide additional insights into the hopping/switching mechanisms. For the first time, by using SiOx/HfOx stacking engineering, we have developed a low-voltage operation (<; 2V) for SiOx-based ReRAM. The SiOx/HfOx stacking optimization not only maintains the RS behaviors even in air environment without any programming window degradation, but also further reduces the switching voltage below 2V.
本征单极siox基电阻式ram (ReRAM)的特性进行了研究。通过改变器件面积、温度和电流状态,研究了交叉杆MIM结构在交流频率响应下的性能。该结果为跳/切换机制提供了额外的见解。我们首次利用SiOx/HfOx堆叠工程,开发了一种低压操作(<;2V)用于基于siox的ReRAM。SiOx/HfOx叠加优化不仅在空气环境中保持了RS行为,而且没有任何编程窗口退化,而且进一步将开关电压降低到2V以下。
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引用次数: 2
Mixed analog-digital pulse-width modulator for massive-MIMO transmitters 用于大规模mimo发射机的混合模拟-数字脉宽调制器
Pub Date : 2016-04-25 DOI: 10.1109/VLSI-DAT.2016.7482589
Y. Papananos, Nikolaos Alexiou, Konstantinos Galanopoulos, David Seebacher, F. Dielacher
This paper presents a mixed-signal outphasing RF-PWM modulator with improved time resolution and high dynamic range realized in 40nm CMOS. Phase shifting is implemented using synchronously tapped analog delay lines comprising integrated L and C devices and achieving a fine-step delay of 2 ps while occupying acceptable silicon area and consuming zero power. The analog outputs of the delay lines are converted to CMOS-compatible square pulses that drive an AND gate which generates RF-PWM pulses with minimum pulse width of 10ps on a 50-Ohm load. According to system-integrated modulator co-simulation results, an ACLR of -45dBc is achieved from a 40 MHz baseband signal on a 2.65 GHz carrier.
本文提出了一种在40nm CMOS上实现的具有提高时间分辨率和高动态范围的混合信号共相RF-PWM调制器。相移是使用由集成L和C器件组成的同步抽头模拟延迟线实现的,在占用可接受的硅面积和零功耗的情况下实现2 ps的细步延迟。延迟线的模拟输出转换为cmos兼容的方形脉冲,驱动与门,在50欧姆负载上产生最小脉冲宽度为10ps的RF-PWM脉冲。根据系统集成调制器联合仿真结果,在2.65 GHz载波上,从40 MHz基带信号获得-45dBc的ACLR。
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引用次数: 1
Excellent resistance variability control of WOx ReRAM by a smart writing algorithm 采用智能写入算法对WOx ReRAM进行了优良的电阻变异性控制
Pub Date : 2016-04-25 DOI: 10.1109/VLSI-TSA.2016.7480501
Yu-Hsuan Lin, Jau-Yi Wu, Ming-Hsiu Lee, Tien-Yen Wang, Yu-Yu Lin, F. Lee, Dai-Ying Lee, E. Lai, K. Chiang, H. Lung, K. Hsieh, T. Tseng, Chih-Yuan Lu
TMO ReRAMs, being built on defect states, are intrinsically subject to variability. In this work, cell to cell variability is studied by applying write shots with different current and voltage for Forming, SET and RESET operation, respectively. We found the keys to eliminate tail bits consist of (1) longer write pulse, (2) higher write current and (3) higher write voltage. In order to optimize the performance of write speed, write power and device reliability, we developed a novel resistance control method using a smart writing algorithm. Compared to the conventional ISPP writing scheme, this smart writing algorithm covers much wider switching condition variability and cell-to-cell variation by controlling both current and voltage for ReRAM operation.
基于缺陷状态构建的TMO reram本质上受制于可变性。在这项工作中,通过分别应用不同电流和电压的写入shot进行成形,SET和RESET操作,研究了细胞间的可变性。我们发现消除尾位的关键包括(1)更长的写入脉冲,(2)更高的写入电流和(3)更高的写入电压。为了优化写入速度、写入功率和器件可靠性的性能,我们开发了一种采用智能写入算法的新型电阻控制方法。与传统的ISPP写入方案相比,这种智能写入算法通过控制ReRAM操作的电流和电压,涵盖了更广泛的开关条件可变性和细胞间的变化。
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引用次数: 2
Corner spacer design for performance optimization of multi-gate InGaAs-OI FinFET with gate-to-source/drain underlap 基于栅极-源极/漏极underlap的多栅极InGaAs-OI FinFET性能优化的角间隔设计
Pub Date : 2016-04-25 DOI: 10.1109/VLSI-TSA.2016.7480515
V. Hu, Chang-Ting Lo, A. Sachid, P. Su, C. Hu
Corner spacer design is investigated to improve the performance of multi-gate InGaAs-OI FinFET with gate-to-source/drain underlap compared with the all vacuum and all nitride spacer devices. All vacuum spacer devices with low permittivity reduce fringing capacitance and improve performance. However, for gate-to-source/drain underlap InGaAs-OI FinFET, all vacuum spacer device degrades source/drain resistance (Rsd) and ON current (Ion), thus exhibiting slight improvement in inverter delay compared with the all nitride spacer device. Corner spacer design comprising of high-k and low-k composite spacer is proposed to optimize Rsd and capacitance, and hence improve delay. Various lengths and heights of corner spacer for InGaAs-OI FinFET with different underlap length and fin height aspect ratio are investigated to optimized performance. The optimized corner spacer design is: (a) the length of corner spacer (Lcorner) is approximately equal to underlap length (Lun), and (b) the height of corner spacer (Hcorner) is proportional to the sum of fin height (Hfin) and gate oxide thickness (Tox). Compared with the all vacuum spacer InGaAs-OI FinFET with Lun = 6 nm, the optimized corner spacer design exhibits 36% and 10% improvements in Ion and inverter delay, respectively.
为了提高栅极-源极/漏极underlap多栅极InGaAs-OI FinFET的性能,与全真空和全氮化间隔器件相比,研究了角间隔设计。所有具有低介电常数的真空间隔装置都能降低边缘电容并提高性能。然而,对于栅极到源极/漏极underlap InGaAs-OI FinFET,全真空间隔器器件降低了源极/漏极电阻(Rsd)和ON电流(Ion),因此与全氮化间隔器器件相比,逆变器延迟略有改善。提出了由高k和低k复合间隔片组成的角间隔片设计,以优化Rsd和电容,从而改善延迟。为了优化InGaAs-OI FinFET的角间隔片性能,研究了不同长度和高度的InGaAs-OI FinFET的角间隔片。优化后的边角间隔片设计为:(a)边角间隔片长度(Lcorner)近似等于搭接长度(Lun), (b)边角间隔片高度(Hcorner)与翅片高度(Hfin)和栅氧化层厚度(Tox)之和成正比。与Lun = 6 nm的全真空间隔片InGaAs-OI FinFET相比,优化后的角间隔片设计在离子和逆变器延迟方面分别提高了36%和10%。
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引用次数: 9
Band structure engineered Germanium-Tin (GeSn) p-channel tunnel transistors 带结构工程锗锡(GeSn) p沟道隧道晶体管
Pub Date : 2016-04-25 DOI: 10.1109/VLSI-TSA.2016.7480493
R. Pandey, R. Ghosh, S. Datta
In this work, we perform a detailed materials and device design evaluation for p-channel homo-junction and hetero-junction Tunnel FETs in Ge and GeSn material system. We start with atomistic level materials simulation using first principles density functional theory (DFT) and extend it to device level TCAD simulation. We show clearly the impact of tuning Sn composition to engineer the band structure and control the relative contribution of the direct and phonon assisted indirect band-to-band tunneling to design and demonstrate p-channel Tunnel FET in the Group IV system that are competitive with their III-V compound semiconductor counterparts.
在这项工作中,我们在Ge和GeSn材料体系中对p沟道同质结和异质结隧道场效应管进行了详细的材料和器件设计评估。我们从原子级材料模拟开始,使用第一性原理密度泛函理论(DFT),并将其扩展到器件级TCAD模拟。我们清楚地展示了调整Sn组成对设计带结构和控制直接和声子辅助间接带到带隧道的相对贡献的影响,从而设计和展示了在IV组系统中与III-V化合物半导体同行竞争的p沟道隧道场效应管。
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引用次数: 2
期刊
2016 International Symposium on VLSI Technology, Systems and Application (VLSI-TSA)
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