Qiang Zhang , Mingyue Cui , Weichong Chen , Yue Liu , Zhiyi Yu
{"title":"UIC: A unified and scalable chip integrating neuromorphic computation and general purpose processor","authors":"Qiang Zhang , Mingyue Cui , Weichong Chen , Yue Liu , Zhiyi Yu","doi":"10.1016/j.mejo.2024.106449","DOIUrl":"10.1016/j.mejo.2024.106449","url":null,"abstract":"<div><div>Most SNN hardware implementations adopt a heterogeneous architecture consisting of CPUs and accelerators to achieve efficiency in neuromorphic computing. However, this architectural method encounters challenges like load imbalance, communication delays, and substantial demand for hardware resources. To address this issue, we build a unified model description framework and processing architecture, the unified integration core (UIC), which integrates neuromorphic computing (NC) and general-purpose computing (GPC), and conduct software and hardware co-design. By implementing a set of integration and transformation operations, UIC can support critical general purpose processor (GPP) and SNN operations with the same processing elements achieving significant area reduction and latency reduction over those of a naive implementation. A compatible communication infrastructure is proposed to enable homogeneous and heterogeneous scalability on a decentralized intra- and inter-core network. Several optimization methods are incorporated, including resource and data sharing, near-memory processing, and intra-/inter-core pipeline. Compared to the previous state-of-the-art works, UIC achieves high energy efficiency at 2.55 mJ/inference with a low latency of 18.4 ms. In terms of hardware resource consumption, LUTs, and FF hardware resources are reduced by 56% and 60%.</div></div>","PeriodicalId":49818,"journal":{"name":"Microelectronics Journal","volume":"155 ","pages":"Article 106449"},"PeriodicalIF":1.9,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pan Zhao, Taoyu Zhou, Naiqi Liu, Yandong He, Gang Du
{"title":"Analytical multistage thermal resistance model for NSFET self-heating effects","authors":"Pan Zhao, Taoyu Zhou, Naiqi Liu, Yandong He, Gang Du","doi":"10.1016/j.mejo.2024.106499","DOIUrl":"10.1016/j.mejo.2024.106499","url":null,"abstract":"<div><div>As semiconductor technology nodes continue to scale down to 3 nm, the self-heating effect in Gate-All-Around Nanosheet Field-Effect Transistors (GAA-NSFETs) has become a significant concern. This issue arises due to the complex interaction between device dimensions, material properties, and thermal management, which can lead to performance degradation and reliability challenges in advanced transistor designs. This paper aims to investigate the self-heating phenomenon in three-stacked nanosheet FETs and to develop a novel thermal resistance model that accurately captures the thermal behavior of these devices. The goal is to create a reliable framework for analyzing and mitigating self-heating effects in nanosheet-based transistors. We employed TCAD and SPICE simulations to analyze the self-heating effect in nanosheet FETs. A new multi-stage thermal resistance model (TRM), incorporating both thermal resistance (Rₜₕ) and thermal capacitance (Cₜₕ), was developed within the Berkeley Short-channel IGFET Model-Common MultiGate (BSIM-CMG) framework. Model accuracy was ensured by fitting the simulated ID-VG curves to experimental data, followed by parameter extraction and calibration based on self-heating evaluations. The proposed multi-stage Rₜₕ model demonstrated strong agreement with the simulation results, providing an accurate representation of the thermal behavior in three-stacked nanosheet FETs. This model offers a robust tool for analyzing self-heating effects in advanced nanosheet devices and can be used to guide the design and optimization of future low-power, high-performance transistors.</div></div>","PeriodicalId":49818,"journal":{"name":"Microelectronics Journal","volume":"155 ","pages":"Article 106499"},"PeriodicalIF":1.9,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A 7.3–14.2 GHz 6.3 mW LNA with 9.4±0.6 dB gain using transformer feedback and peak-gain distribution","authors":"Yuanrong Xie, Jincai Wen","doi":"10.1016/j.mejo.2024.106497","DOIUrl":"10.1016/j.mejo.2024.106497","url":null,"abstract":"<div><div>This article presents a wideband low-noise amplifier (LNA) with low power consumption and flat gain, implemented in a 180 nm CMOS technology. This LNA uses low voltage operation and current-reuse technology to reduce power consumption, and its cascaded structure is composed of a common-source (CS) stage with gate-source transformer feedback and a cascode stage. The T-coil structure is employed for inter-stage and output matching to expand bandwidth and adjust peak gain, while achieving in-band flat gain through the peak gain distribution technology. Measured results show that the LNA achieves a flat gain of 9.4 ± 0.6 dB over the 7.3–14.2 GHz frequency band, with a 3 dB bandwidth of 6.3–14.6 GHz and an in-band noise figure (NF) of lower than 4.2 dB. The core chip area is 0.29 mm<sup>2</sup>, and the power consumption is only 6.3 mW.</div></div>","PeriodicalId":49818,"journal":{"name":"Microelectronics Journal","volume":"155 ","pages":"Article 106497"},"PeriodicalIF":1.9,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ziwei Hu , Jiafei Yao , Fan Yang , Yuxuan Dai , Kemeng Yang , Man Li , Jing Chen , Maolin Zhang , Jun Zhang , Yufeng Guo
{"title":"A novel double-trench SiC SBD-embedded MOSFET with improved figure-of-merit and short-circuit ruggedness","authors":"Ziwei Hu , Jiafei Yao , Fan Yang , Yuxuan Dai , Kemeng Yang , Man Li , Jing Chen , Maolin Zhang , Jun Zhang , Yufeng Guo","doi":"10.1016/j.mejo.2024.106495","DOIUrl":"10.1016/j.mejo.2024.106495","url":null,"abstract":"<div><div>A novel 1.2-kV double-trench SiC MOSFET with stepped Schottky barrier diode (SBD) (DTSS-MOS) has been proposed and studied. The proposed device employs a deep gate trench filled with high-K dielectric and a shallow source trench with stepped SBD to modulate the electric field distribution, causing a higher figure-of-merit (<em>FOM</em>). After optimizing the structural parameters, the <em>FOM</em> of the DTSS-MOS improves by 266 % and 47 % compared to the planar-gate MOSFET (PG-MOS) and the trench-gate MOSFET (TG-MOS), respectively. Meanwhile, due to its lower specific on-resistance (<em>R</em><sub>on,sp</sub>), the DTSS-MOS exhibits an outstanding high-frequency figure of merit (<em>HFFOM</em>). Furthermore, the shallow source trench incorporates the stepped SBD, allowing the P-well region and P+ shielding layer to effectively reduce the electron flowing path in the SBD region, thereby lowering the temperature and enhancing the short-circuit withstand time (<em>SCWT</em>). The <em>SCWT</em> of the DTSS-MOS is increased by 75 % and 133 % compared with PG-MOS and TG-MOS, respectively. Additionally, a feasible process flow for the DTSS-MOS is provided.</div></div>","PeriodicalId":49818,"journal":{"name":"Microelectronics Journal","volume":"155 ","pages":"Article 106495"},"PeriodicalIF":1.9,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xin Li , Mengya Gao , Zihua Ren , Kefeng Yu , Wenjuan Lu , Chenghu Dai , Wei Hu , Chunyu Peng , Xiulong Wu
{"title":"Corrigendum to “A 9T-SRAM based computing-in-memory with redundant unit and digital operation for boolean logic and MAC” [145, March 2024, 106124","authors":"Xin Li , Mengya Gao , Zihua Ren , Kefeng Yu , Wenjuan Lu , Chenghu Dai , Wei Hu , Chunyu Peng , Xiulong Wu","doi":"10.1016/j.mejo.2024.106473","DOIUrl":"10.1016/j.mejo.2024.106473","url":null,"abstract":"","PeriodicalId":49818,"journal":{"name":"Microelectronics Journal","volume":"154 ","pages":"Article 106473"},"PeriodicalIF":1.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haozhen Li, Guangwen Yan, Zhengmin Zhang, Yu Pang, Lei Liu, Tingcong Ye, Ningning Wang
{"title":"An efficient power management circuit with MPPT for self-powered wireless sensors","authors":"Haozhen Li, Guangwen Yan, Zhengmin Zhang, Yu Pang, Lei Liu, Tingcong Ye, Ningning Wang","doi":"10.1016/j.mejo.2024.106487","DOIUrl":"10.1016/j.mejo.2024.106487","url":null,"abstract":"<div><div>In this paper, we proposed a power management circuit (PMC) specifically designed for low-power electromagnetic vibrational energy harvesters, capable of operating with AC voltage as low as 1.1V. The PMC consists of an active quadruple voltage rectifier module, a maximum power point tracking (MPPT) module, a DC-DC converter module, an energy charging and discharging management module, and an energy storage unit. Experimental validation was performed using an electromagnetic vibration energy harvester (EVEH). The active quadruple voltage rectifier utilizes a single comparator to regulate identical MOSFETs, thereby reducing component counts. A novel MPPT technique utilizing hysteresis comparators is introduced to enhance the stability and accuracy of MPPT process. Results indicate a minimal MPPT tracking rate error 7.32 %, and the overall conversion efficiency (CE) of the PMC reaches a high efficiency of 89.70 % while the output power of the harvester is 1.67 mw.</div></div>","PeriodicalId":49818,"journal":{"name":"Microelectronics Journal","volume":"155 ","pages":"Article 106487"},"PeriodicalIF":1.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jing Chen , Jiahao Wu , Wei Du , Qing Yao , Kemeng Yang , Jun Zhang , Jiafei Yao , Yufeng Guo
{"title":"General neural network-based static performance prediction model construction techniques for gate-all-around and planar field effect transistor","authors":"Jing Chen , Jiahao Wu , Wei Du , Qing Yao , Kemeng Yang , Jun Zhang , Jiafei Yao , Yufeng Guo","doi":"10.1016/j.mejo.2024.106485","DOIUrl":"10.1016/j.mejo.2024.106485","url":null,"abstract":"<div><div>—This paper proposes general neural network-based static performance prediction model construction techniques for gate-all-around (GAA) and planar field effect transistor (FET). Firstly, a unique data preprocessing method named quasi-linear transformation is proposed to improve the prediction accuracy. By introducing transformation functions to process the input, the relationship between the input and output is simplified, thereby facilitating the model training. Secondly, an improved weighted loss function scheme that considers a more comprehensive evaluation criterion to enhance the training process is proposed. Compared with traditional artificial neural networks, the average prediction error of the output and transfer curves is reduced by 33 % and 25 % for GAA and planar FET, respectively. Meanwhile, the proposed model demonstrates strong extrapolation ability. Moreover, compared to traditional methods of obtaining static characteristic curves, this method is more efficient. Furthermore. the proposed neural network-based static performance prediction model is converted to Verilog-A model, demonstrating potential in circuit simulation.</div></div>","PeriodicalId":49818,"journal":{"name":"Microelectronics Journal","volume":"154 ","pages":"Article 106485"},"PeriodicalIF":1.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tianxiang Wu , Chen Lin , Ning Zuo , Qiwei Hu , Lijuan Yuan , Peiyuan Lu , Junhui Li
{"title":"A high-precision GSG probe planarization method based on direct current signal","authors":"Tianxiang Wu , Chen Lin , Ning Zuo , Qiwei Hu , Lijuan Yuan , Peiyuan Lu , Junhui Li","doi":"10.1016/j.mejo.2024.106478","DOIUrl":"10.1016/j.mejo.2024.106478","url":null,"abstract":"<div><div>Since the GSG (ground-signal-ground) probe has three pins, it needs planarization before the wafer test. To ensure the reliability of the RF wafer test, a new high-precision GSG probe planarization method is first proposed based on DC (Direct Current) analysis. The angle-force model of the GSG probe contact and separation process is derived, which is based on the analysis of the collected real-time force and electrical data using a designed force sensing system, and voltage measuring circuit. The results show that when the GSG probe is in contact with the substrate and away from the substrate, the relationship between the angle and force model is a primary function and a quadratic function respectively. The angle of the GSG probe can be obtained by substituting the force of the change points of voltage and resistance into the angle and force model. In addition, the smaller the difference between the minimum force at two-pin contact and three-pin contact of the GSG probe, the smaller the angle of the GSG probe. This method can provide a method and idea for the automatic planarization of GSG probes.</div></div>","PeriodicalId":49818,"journal":{"name":"Microelectronics Journal","volume":"155 ","pages":"Article 106478"},"PeriodicalIF":1.9,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zongle Ma , Ran Hong , Meiru Liu , Rui Chen , Keping Wang
{"title":"Design and analysis of ultra-low power third-harmonic receiver with enhanced conversion gain and out-of-band rejection for IEEE 802.11ba","authors":"Zongle Ma , Ran Hong , Meiru Liu , Rui Chen , Keping Wang","doi":"10.1016/j.mejo.2024.106315","DOIUrl":"10.1016/j.mejo.2024.106315","url":null,"abstract":"<div><div>This paper presents an ultra-low power (ULP) receiver with enhanced conversion gain and high out-of-band rejection for Wi-Fi 802.11ba. The proposed third-harmonic mixer based on 6-phase non-overlap local oscillator (LO) not only minimizes power of the radio frequency (RF) front-end, but also improves out-of-band rejection. In addition, the 8-bit analog finite impulse response (AFIR) low-pass filter is designed in the baseband circuit, which can greatly improve the adjacent channel rejection (ACR) of the receiver with ultra-low power consumption. Meanwhile, the zero-power tunable tapped-capacitor resonator is proposed, which alleviate the resonance frequency offset impact by using switched capacitors for process corners compensation. This 802.11ba receiver is designed in a 65-nm CMOS process occupying an active area of 0.25 mm<sup>2</sup>. Post-layout simulation results show that, when operating at 2.4 GHz, the receiver achieves an ACR of 93 dB and a voltage gain of 51 dB. It consumes 197 μW DC power from 0.7 V supply voltage.</div></div>","PeriodicalId":49818,"journal":{"name":"Microelectronics Journal","volume":"154 ","pages":"Article 106315"},"PeriodicalIF":1.9,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Feng Bu , Ruixue Ding , Depeng Sun , Yuan Gao , Ruiqing Wang , Xiaoteng Zhao , Rong Zhou , Shubin Liu
{"title":"A 1-V 3.9–5.2-GHz reference-sampling PLL with 168-fsrms integrated jitter and −76-dBc reference spur","authors":"Feng Bu , Ruixue Ding , Depeng Sun , Yuan Gao , Ruiqing Wang , Xiaoteng Zhao , Rong Zhou , Shubin Liu","doi":"10.1016/j.mejo.2024.106483","DOIUrl":"10.1016/j.mejo.2024.106483","url":null,"abstract":"<div><div>This letter presents a low-voltage (LV), low-jitter reference-sampling phase-locked loop (RSPLL), which can achieve sub-200-fs jitter performance with a 1-V supply voltage. With the proposed level-shift-up reference-sampling phase detector (RSPD), the on-resistance of sample and hold (SH) switches is reduced, and it ensures the integrity of the reference signal. Fabricated in the 180-nm RF CMOS process, the area of the chip is about 445 × 775 <span><math><mrow><mi>μ</mi></mrow></math></span> m<sup>2</sup>. The proposed RSPLL can achieve −135-dBc/Hz@10 MHz phase noise and −76.15-dBc reference spur at 4.58 GHz with 1-V supply voltage. The rms jitter is 168.3 fs integrated from 10 kHz to 100 MHz, and the power consumption is 9.66 mW.</div></div>","PeriodicalId":49818,"journal":{"name":"Microelectronics Journal","volume":"155 ","pages":"Article 106483"},"PeriodicalIF":1.9,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}