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Study of a multi-wire proportional chamber with a cathode strip and delay-line readout 被引量:1
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作者 韩丽英 李奇特 +2 位作者 葛愉成 刘洪涛 叶沿林 《Chinese Physics C》 SCIE CAS CSCD 2009年第5期364-368,共5页
The design principle for a multi-wire proportional chamber with a cathode strip and delay-line readout is described. A prototype chamber of a size of 10 cm×10 cm was made together with the readout electronics cir... The design principle for a multi-wire proportional chamber with a cathode strip and delay-line readout is described. A prototype chamber of a size of 10 cm×10 cm was made together with the readout electronics circuit. A very clean signal with very low background noise was obtained by applying a transformer between the delay-line and the pre-amplifier in order to match the resistance. Along the anode wire direction a position resolution of less than 0.5 mm was achieved with a ^55Fe-5.9 keV X ray source. The simple structure, large effective area and high position resolution allow the application of a gas chamber of this kind to many purposes. 展开更多
关键词 multi-wire proportional chamber delay-line readout cathode strip position resolution
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An X-ray imaging device based on a GEM detector with delay-line readout
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作者 周意 李澄 +1 位作者 孙勇杰 邵明 《Chinese Physics C》 SCIE CAS CSCD 2010年第1期78-82,共5页
An X-ray imaging device based on a triple-GEM (Gas Electron Multiplier) detector, a fast delay-line circuit with 700 MHz cut-off frequency and two dimensional readout strips with 150 μm width on the top and 250 μm... An X-ray imaging device based on a triple-GEM (Gas Electron Multiplier) detector, a fast delay-line circuit with 700 MHz cut-off frequency and two dimensional readout strips with 150 μm width on the top and 250 μm width on the bottom, is designed and tested. The localization information is derived from the propagation time of the induced signals on the readout strips. This device has a good spatial resolution of 150 μm and works stably at an intensity of 105 Hz/mm2 with 8 keV X-rays. 展开更多
关键词 delay-line readout gas electron multiplier (GEM) X-ray imaging
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Threshold-independent method for single-shot readout of spin qubits in semiconductor quantum dots
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作者 胡睿梓 祝圣凯 +9 位作者 张鑫 周圆 倪铭 马荣龙 罗刚 孔真真 王桂磊 曹刚 李海欧 郭国平 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第1期274-279,共6页
The single-shot readout data process is essential for the realization of high-fidelity qubits and fault-tolerant quantum algorithms in semiconductor quantum dots. However, the fidelity and visibility of the readout pr... The single-shot readout data process is essential for the realization of high-fidelity qubits and fault-tolerant quantum algorithms in semiconductor quantum dots. However, the fidelity and visibility of the readout process are sensitive to the choice of the thresholds and limited by the experimental hardware. By demonstrating the linear dependence between the measured spin state probabilities and readout visibilities along with dark counts, we describe an alternative threshold-independent method for the single-shot readout of spin qubits in semiconductor quantum dots. We can obtain the extrapolated spin state probabilities of the prepared probabilities of the excited spin state through the threshold-independent method. We then analyze the corresponding errors of the method, finding that errors of the extrapolated probabilities cannot be neglected with no constraints on the readout time and threshold voltage. Therefore, by limiting the readout time and threshold voltage, we ensure the accuracy of the extrapolated probability. We then prove that the efficiency and robustness of this method are 60 times larger than those of the most commonly used method. Moreover, we discuss the influence of the electron temperature on the effective area with a fixed external magnetic field and provide a preliminary demonstration for a single-shot readout of up to 0.7K/1.5T in the future. 展开更多
关键词 quantum computation quantum dot quantum state readout
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Design and prototyping of the readout electronics for the transition radiation detector in the high energy cosmic radiation detection facility
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作者 Jie-Yu Zhu Yang-Zhou Su +12 位作者 Hai-Bo Yang Fen-Hua Lu Yan Yang Xi-Wen Liu Ping Wei Shu-Cai Wan Hao-Qing Xie Xian-Qin Li Cong Dai Hui-Jun Hu Hong-Bang Liu Shu-Wen Tang Cheng-Xin Zhao 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2024年第4期189-199,共11页
The high energy cosmic-radiation detection(HERD)facility is planned to launch in 2027 and scheduled to be installed on the China Space Station.It serves as a dark matter particle detector,a cosmic ray instrument,and a... The high energy cosmic-radiation detection(HERD)facility is planned to launch in 2027 and scheduled to be installed on the China Space Station.It serves as a dark matter particle detector,a cosmic ray instrument,and an observatory for high-energy gamma rays.A transition radiation detector placed on one of its lateral sides serves dual purpose,(ⅰ)calibrating HERD's electromagnetic calorimeter in the TeV energy range,and(ⅱ)serving as an independent detector for high-energy gamma rays.In this paper,the prototype readout electronics design of the transition radiation detector is demonstrated,which aims to accurately measure the charge of the anodes using the SAMPA application specific integrated circuit chip.The electronic performance of the prototype system is evaluated in terms of noise,linearity,and resolution.Through the presented design,each electronic channel can achieve a dynamic range of 0–100 fC,the RMS noise level not exceeding 0.15 fC,and the integral nonlinearity was<0.2%.To further verify the readout electronic performance,a joint test with the detector was carried out,and the results show that the prototype system can satisfy the requirements of the detector's scientific goals. 展开更多
关键词 HERD Dark matter particle detection TRD readout electronics SAMPA Data acquisition Performance test
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Studies of an event-building algorithm of the readout system for the twin TPCs in HFRS
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作者 Jing Tian Zhi-Peng Sun +4 位作者 Song-Bo Chang Yi Qian Hong-Yun Zhao Zheng-Guo Hu Xi-Meng Chen 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2024年第4期82-95,共14页
The High-energy Fragment Separator(HFRS),which is currently under construction,is a leading international radioactive beam device.Multiple sets of position-sensitive twin time projection chamber(TPC)detectors are dist... The High-energy Fragment Separator(HFRS),which is currently under construction,is a leading international radioactive beam device.Multiple sets of position-sensitive twin time projection chamber(TPC)detectors are distributed on HFRS for particle identification and beam monitoring.The twin TPCs'readout electronics system operates in a trigger-less mode due to its high counting rate,leading to a challenge of handling large amounts of data.To address this problem,we introduced an event-building algorithm.This algorithm employs a hierarchical processing strategy to compress data during transmission and aggregation.In addition,it reconstructs twin TPCs'events online and stores only the reconstructed particle information,which significantly reduces the burden on data transmission and storage resources.Simulation studies demonstrated that the algorithm accurately matches twin TPCs'events and reduces more than 98%of the data volume at a counting rate of 500 kHz/channel. 展开更多
关键词 High counting rate Twin TPCs Trigger-less readout electronics Event building Hierarchical data processing
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Quantum generative adversarial networks based on a readout error mitigation method with fault tolerant mechanism
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作者 赵润盛 马鸿洋 +2 位作者 程涛 王爽 范兴奎 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第4期285-295,共11页
Readout errors caused by measurement noise are a significant source of errors in quantum circuits,which severely affect the output results and are an urgent problem to be solved in noisy-intermediate scale quantum(NIS... Readout errors caused by measurement noise are a significant source of errors in quantum circuits,which severely affect the output results and are an urgent problem to be solved in noisy-intermediate scale quantum(NISQ)computing.In this paper,we use the bit-flip averaging(BFA)method to mitigate frequent readout errors in quantum generative adversarial networks(QGAN)for image generation,which simplifies the response matrix structure by averaging the qubits for each random bit-flip in advance,successfully solving problems with high cost of measurement for traditional error mitigation methods.Our experiments were simulated in Qiskit using the handwritten digit image recognition dataset under the BFA-based method,the Kullback-Leibler(KL)divergence of the generated images converges to 0.04,0.05,and 0.1 for readout error probabilities of p=0.01,p=0.05,and p=0.1,respectively.Additionally,by evaluating the fidelity of the quantum states representing the images,we observe average fidelity values of 0.97,0.96,and 0.95 for the three readout error probabilities,respectively.These results demonstrate the robustness of the model in mitigating readout errors and provide a highly fault tolerant mechanism for image generation models. 展开更多
关键词 readout errors quantum generative adversarial networks bit-flip averaging method fault tolerant mechanisms
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Design of a high-dynamic-range prototype readout system for VLAST calorimeter 被引量:3
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作者 Qiang Wan Jian-Hua Guo +10 位作者 Xing Xu Shen Wang Yong-Qiang Zhang Yi-Ming Hu Yan Zhang Xu Pan Xiang Li Chuan Yue Wei Jiang Yu-Xin Cui Deng-Yi Chen 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2023年第10期47-59,共13页
In the future, the Very Large Area gamma-ray Space Telescope is expected to observe high-energy electrons and gamma rays in the MeV to TeV range with unprecedented acceptance. As part of the detector suite, a high-ene... In the future, the Very Large Area gamma-ray Space Telescope is expected to observe high-energy electrons and gamma rays in the MeV to TeV range with unprecedented acceptance. As part of the detector suite, a high-energy imaging calorimeter(HEIC) is currently being developed as a homogeneous calorimeter that utilizes long bismuth germanate(BGO) scintillation crystals as both absorbers and detectors. To accurately measure the energy deposition in the BGO bar of HEIC, a highdynamic-range readout method using a silicon photomultiplier(SiPM) and multiphotodiode(PD) with different active areas has been proposed. A prototype readout system that adopts multichannel charge measurement ASICs was also developed to read out the combined system of SiPMs and PDs. Preliminary tests confirmed the feasibility of the readout scheme, which is expected to have a dynamic range close to 10~6. 展开更多
关键词 VLAST CALORIMETER readout system Front-end electronics Large dynamic range
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FPGA Optimized Accelerator of DCNN with Fast Data Readout and Multiplier Sharing Strategy 被引量:1
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作者 Tuo Ma Zhiwei Li +3 位作者 Qingjiang Li Haijun Liu Zhongjin Zhao Yinan Wang 《Computers, Materials & Continua》 SCIE EI 2023年第12期3237-3263,共27页
With the continuous development of deep learning,Deep Convolutional Neural Network(DCNN)has attracted wide attention in the industry due to its high accuracy in image classification.Compared with other DCNN hard-ware ... With the continuous development of deep learning,Deep Convolutional Neural Network(DCNN)has attracted wide attention in the industry due to its high accuracy in image classification.Compared with other DCNN hard-ware deployment platforms,Field Programmable Gate Array(FPGA)has the advantages of being programmable,low power consumption,parallelism,and low cost.However,the enormous amount of calculation of DCNN and the limited logic capacity of FPGA restrict the energy efficiency of the DCNN accelerator.The traditional sequential sliding window method can improve the throughput of the DCNN accelerator by data multiplexing,but this method’s data multiplexing rate is low because it repeatedly reads the data between rows.This paper proposes a fast data readout strategy via the circular sliding window data reading method,it can improve the multiplexing rate of data between rows by optimizing the memory access order of input data.In addition,the multiplication bit width of the DCNN accelerator is much smaller than that of the Digital Signal Processing(DSP)on the FPGA,which means that there will be a waste of resources if a multiplication uses a single DSP.A multiplier sharing strategy is proposed,the multiplier of the accelerator is customized so that a single DSP block can complete multiple groups of 4,6,and 8-bit signed multiplication in parallel.Finally,based on two strategies of appeal,an FPGA optimized accelerator is proposed.The accelerator is customized by Verilog language and deployed on Xilinx VCU118.When the accelerator recognizes the CIRFAR-10 dataset,its energy efficiency is 39.98 GOPS/W,which provides 1.73×speedup energy efficiency over previous DCNN FPGA accelerators.When the accelerator recognizes the IMAGENET dataset,its energy efficiency is 41.12 GOPS/W,which shows 1.28×−3.14×energy efficiency compared with others. 展开更多
关键词 FPGA ACCELERATOR DCNN fast data readout strategy multiplier sharing strategy network quantization energy efficient
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Advances in nuclear detection and readout techniques 被引量:5
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作者 Rui He Xiao‑Yang Niu +48 位作者 Yi Wang Hong‑Wei Liang Hong‑Bang Liu Ye Tian Hong‑Lin Zhang Chao‑Jie Zou Zhi‑Yi Liu Yun‑Long Zhang Hai‑Bo Yang Ju Huang Hong‑Kai Wang Wei‑Jia Han Bei Cao Gang Chen Cong Dai Li‑Min Duan Rui‑Rui Fan Fang‑Fa Fu Jian‑Hua Guo Dong Han Wei Jiang Xian‑Qin Li Xin Li Zhuo‑Dai Li Yu‑Tie Liang Shun Liao De‑Xu Lin Cheng‑Ming Liu Guo‑Rui Liu Jun‑Tao Liu Ze Long Meng‑Chen Niu Hao Qiu Hu Ran Xiang‑Ming Sun Bo‑Tan Wang Jia Wang Jin‑Xiang Wang Qi‑Lin Wang Yong‑Sheng Wang Xiao‑Chuan Xia Hao‑Qing Xie He‑Run Yang Hong Yin Hong Yuan Chun‑Hui Zhang Rui‑Guang Zhao Ran Zheng Cheng‑Xin Zhao 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2023年第12期281-358,共78页
“A Craftsman Must Sharpen His Tools to Do His Job,”said Confucius.Nuclear detection and readout techniques are the foundation of particle physics,nuclear physics,and particle astrophysics to reveal the nature of the... “A Craftsman Must Sharpen His Tools to Do His Job,”said Confucius.Nuclear detection and readout techniques are the foundation of particle physics,nuclear physics,and particle astrophysics to reveal the nature of the universe.Also,they are being increasingly used in other disciplines like nuclear power generation,life sciences,environmental sciences,medical sciences,etc.The article reviews the short history,recent development,and trend of nuclear detection and readout techniques,covering Semiconductor Detector,Gaseous Detector,Scintillation Detector,Cherenkov Detector,Transition Radiation Detector,and Readout Techniques.By explaining the principle and using examples,we hope to help the interested reader underst and this research field and bring exciting information to the community. 展开更多
关键词 Silicon detector Wide bandgap detector Time projection chamber(TPC) Multigap resistive plate chamber detector(MRPC) Scintillation detector CALORIMETERS Cherenkov detector Transition radiation detector Artificial intelligence Trigger-less readout
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OPTIMIZATION OF WDM OPTICAL PACKET SWITCHES WITH SPARSE WAVELENGTH CONVERTERS AND NON-DEGENERATE FIBER DELAY-LINES
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作者 ZhangZhizhong ChengFang +1 位作者 ZhaoHuandong ZengQingji 《Journal of Electronics(China)》 2005年第4期333-344,共12页
This paper investigates the untraditional approach of contention resolution in Wavelength Division Multiplexing (WDM) Optical Packet Switching (OPS). The most striking characteristics of the developed switch architect... This paper investigates the untraditional approach of contention resolution in Wavelength Division Multiplexing (WDM) Optical Packet Switching (OPS). The most striking characteristics of the developed switch architecture are: (1) Contention resolution is achieved by a combined sharing of Fiber Delay-Lines (FDLs) and Tunable Optical Wavelength Converters (TOWCs); (2) FDLs are arranged in non-degenerate form, i.e., non-uniform distribution of the delay lines; (3) TOWCs just can perform wavelength conversion in partial continuous wavelength channels, i.e., sparse wavelength conversion. The concrete configurations of FDLs and TOWCs are described and analyzed under non-bursty and bursty traffic scenarios. Simulation results demonstrate that for a prefixed packet loss probability constraint, e.g., 10-6, the developed architecture provides a different point of view in OPS design. That is, combined sharing of FDLs and TOWCs can, effectively, obtain a good tradeoff between the switch size and the cost, and TOWCs which are achieved in sparse form can also decrease the implementing complexity. 展开更多
关键词 Optical Packet Switching (OPS) Wavelength converters Fiber delay-lines(FDLs) SHARING Packet loss probability
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Mitigating Time Interval Error (TIE) in High-Speed Baseband Digital Transports: Design for Delay Compensation at Baseband Infrastructure of Smart-Phones Using Fractal Dispersive Delay-Lines
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作者 Perambur S. Neelakanta Aziz U. Noori 《Circuits and Systems》 2014年第5期115-123,共9页
A major concern in modern smart-phones and hand-held devices is a way of mitigating the time interval error (TIE) perceived at high-speed digital transits along the traces of the circuit-board (rigid and or flexible) ... A major concern in modern smart-phones and hand-held devices is a way of mitigating the time interval error (TIE) perceived at high-speed digital transits along the traces of the circuit-board (rigid and or flexible) used in baseband infrastructures. Indicated here is a way of adopting a planar fractal inductor configuration to improvise the necessary time-delay in the transits of digital signal phase jitter and reduce the TIE. This paper addresses systematic design considerations on fractal inductor geometry commensurate with practical aspects of its implementation as delaylines in the high-speed digital transports at the baseband operations of smart-phone infrastructures. Experimental results obtained from a test module are presented to illustrate the efficacy of the design and acceptable delay performance of the test structure commensurate with the digital transports of interest. 展开更多
关键词 Time-Interval ERROR Smart-Phones FRACTAL Inductors delay-lines Insert
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CMOS Phase and Quadrature Pulsed Differential Oscillators Coupled through Microstrip Delay-Lines
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作者 Francesco Stilgenbauer Stefano Perticaroli Fabrizio Palma 《Circuits and Systems》 2014年第8期181-190,共10页
An innovative solution to design phase and quadrature pulsed coupled oscillators systems through electromagnetic waveguides is described in this paper. Each oscillator is constituted by an LC differential resonator re... An innovative solution to design phase and quadrature pulsed coupled oscillators systems through electromagnetic waveguides is described in this paper. Each oscillator is constituted by an LC differential resonator refilled through a couple of current pulse generator circuits. The phase and quadrature coupling between the two differential oscillators is achieved using delayed replicas of generated fundamentals from a resonator as driving signal of pulse generator injecting in the other resonator. The delayed replicas are obtained by microstrip-based delay-lines. A 2.4 - 2.5 GHz VCO has been implemented in a 150 nm RF CMOS process. Simulations showed at 1 MHz offset a phase noise of -139.9 dBc/Hz and a FOM of -189.1 dB. 展开更多
关键词 Voltage Controlled OSCILLATOR MICROSTRIP delay-line PHASE and QUADRATURE PHASE Noise
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Edims: an event-driven internal memory synchronized readout prototype ASIC chip developed for HFRS-TPC
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作者 Ming‑Yu Yang Yi Qian +5 位作者 Tian‑Lei Pu Wei‑Jian Lu Zhi‑Kun Sun Hong‑Yun Zhao Jia‑Rui Zhang Zheng‑Qiang Liu 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2023年第12期177-189,共13页
HFRS(HIAF FRagment Separator) will be the radioactive secondary beam separation line on High-Intensity heavy-ion Accelerator Facility(HIAF) in China. Several TPC detectors, with high count rates, are planned for parti... HFRS(HIAF FRagment Separator) will be the radioactive secondary beam separation line on High-Intensity heavy-ion Accelerator Facility(HIAF) in China. Several TPC detectors, with high count rates, are planned for particle identification and beam monitoring at HFRS. This paper presents an event-driven internal memory and synchronous readout(EDIMS)prototype ASIC chip. The aim is to provide HFRS-TPC with high-precision time and charge measurements with high count rates and a large dynamic range. The first prototype EDIMS chip integrated 16 channels and is fabricated using a 0.18-μm CMOS process. Each channel consists of a charge-sensitive amplifier, fast shaper, slow shaper, peak detect-and-hold circuit, discriminator with time-walk compensation, analog memory, and FIFO. The token ring is used for clock-synchronous readout. The chip is taped and tested. 展开更多
关键词 GEM-TPC HFRS readout ASIC Self-trigger TIMESTAMP TWC PDH SCA Token ring
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天文应用红外焦平面读出电路研究 被引量:1
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作者 梁清华 魏彦峰 +2 位作者 陈洪雷 郭晶 丁瑞军 《红外与激光工程》 EI CSCD 北大核心 2024年第1期55-67,共13页
成功设计了一款天文应用的640×512短波红外焦平面读出电路。由于红外天文观测具有极低背景辐射、光子通量低的特点,为了实现探测器的高信噪比,需要降低器件的暗电流和电路噪声。电路采用有效的功耗管理策略,在保证电路正常工作的... 成功设计了一款天文应用的640×512短波红外焦平面读出电路。由于红外天文观测具有极低背景辐射、光子通量低的特点,为了实现探测器的高信噪比,需要降低器件的暗电流和电路噪声。电路采用有效的功耗管理策略,在保证电路正常工作的前提下尽可能地降低电路功耗以减小电路辉光对器件暗电流的影响。同时,研究非破坏性读出的数字功能,实现了超长的积分时间和信号的多帧累积,并作为一种斜坡采样的策略有效地降低读出噪声。短波HgCdTe焦平面的测试结果符合理论设计预期,开启电路非破坏性读出功能,设置6 000 s的积分时间,当电路功耗调低至14.04 mW时暗电流为0.9 e-·pixel^(-1)·s^(-1)。读出噪声在两档增益下分别为50 e-(10 fF)和27 e-(5 fF),非线性度低于0.1%。 展开更多
关键词 红外天文观测 红外焦平面读出电路 低功耗 非破坏性读出 读出噪声
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集成芯片硅微条探测器电子读出系统设计
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作者 武梦龙 张家赫 +3 位作者 王东昱 黄明 龚轲 彭文溪 《核电子学与探测技术》 CAS 北大核心 2024年第4期703-710,共8页
设计了基于VATA460.3专用集成芯片(ASIC)的多通道、低功耗带触发硅微条探测器读出系统,该系统实现了共32路粒子入射信息读出。测试结果表明:该系统各通道基线稳定,等效噪声水平均低于0.17 fC,动态范围可达90 fC。
关键词 硅微条 探测器读出设计 VATA460.3 径迹探测器
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高速数字化三维集成式CCD-CMOS图像传感器
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作者 李明 黄芳 +3 位作者 刘戈扬 周后荣 王小东 任思伟 《半导体光电》 CAS 北大核心 2024年第3期388-394,共7页
为了解决CCD与CMOS工艺兼容性低、互连集成制作难度大,以及芯片间接口匹配和高性能兼备等问题,对CCD器件拓扑结构与像元、CMOS读出电路、三维异质互连集成及高密度引脚封装等技术进行研究,提出了一种1024×256阵列规模的集成式CCD-C... 为了解决CCD与CMOS工艺兼容性低、互连集成制作难度大,以及芯片间接口匹配和高性能兼备等问题,对CCD器件拓扑结构与像元、CMOS读出电路、三维异质互连集成及高密度引脚封装等技术进行研究,提出了一种1024×256阵列规模的集成式CCD-CMOS图像传感器。该器件实现了CCD信号的高精度数字化处理、高速输出及多芯粒的技术融合,填补了国内CCDCMOS三维集成技术空白。测试结果表明:集成CCD-CMOS器件的光响应和成像功能正常,双边成像效果良好,图像无黑条和坏列,互连连通率(99.9%)满足三维集成要求,实现了集成式探测器件的大满阱高灵敏度成像(满阱电子数达165.28ke^(-)、峰值量子效率达86.1%)、高精度数字化(12bit)和高速输出(行频率达100.85kHz),满足集成化、数字化、小型化的多光谱探测成像系统要求。 展开更多
关键词 集成式CCD-CMOS探测器 三维互连集成 电荷耦合器件 CMOS读出电路
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基于磁性传感器的低失调温度补偿接口电路设计
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作者 樊华 常伟鹏 +5 位作者 王策 李国 刘建明 李宗霖 魏琦 冯全源 《电子与信息学报》 EI CAS CSCD 北大核心 2024年第4期1521-1528,共8页
面向磁性传感器在物联网(IoT)技术中的广泛应用,该文基于180 nm CMOS工艺设计了一种具有低失调电压,低温度漂移特性的霍尔传感器接口电路。针对霍尔传感器灵敏度的温度漂移特性,该文设计了一种感温电路并与查表法相结合,调节可编程增益... 面向磁性传感器在物联网(IoT)技术中的广泛应用,该文基于180 nm CMOS工艺设计了一种具有低失调电压,低温度漂移特性的霍尔传感器接口电路。针对霍尔传感器灵敏度的温度漂移特性,该文设计了一种感温电路并与查表法相结合,调节可编程增益放大器(PGA)的增益有效地降低了霍尔传感器的温度系数(TC)。在此基础上,通过在信号主通路中使用相关双采样(CDS)技术,极大程度上消除了霍尔传感器的失调电压。仿真结果表明,在–40°C~125°C温度范围内,霍尔传感器的TC从966.4 ppm/°C减小到了58.1 ppm/°C。信号主通路的流片结果表明,霍尔传感器的失调电压从25 mV左右减小到了4 mV左右,霍尔传感器的非线性误差为0.50%。芯片的总面积为0.69 mm^(2)。 展开更多
关键词 霍尔传感器 接口电路 温度补偿 低失调电压
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一种集成图像处理功能的数字像元焦平面读出电路
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作者 黄文刚 陶治颖 +2 位作者 彭超 周亮 黄晓宗 《太赫兹科学与电子信息学报》 2024年第10期1088-1093,共6页
设计了一种像元级数字化焦平面读出电路,克服了传统模拟读出电路技术的电荷容量局限,实现了更大的动态范围和更低噪声的数字化图像读出;同时在像元内部进行数字化图像处理,可实现非均匀校正(NUC)、盲元补偿、数字时间延迟积分(TDI)、空... 设计了一种像元级数字化焦平面读出电路,克服了传统模拟读出电路技术的电荷容量局限,实现了更大的动态范围和更低噪声的数字化图像读出;同时在像元内部进行数字化图像处理,可实现非均匀校正(NUC)、盲元补偿、数字时间延迟积分(TDI)、空间滤波等图像预处理功能。该电路采用40 nm CMOS工艺流片,面阵规格为640×512,像元步进为30μm,全芯片尺寸约22 mm×19 mm。测试结果显示,该电路通过TDI、空间滤波功能可大幅降低(分别约90%和63%)输出图像空间噪声,提升成像质量。 展开更多
关键词 读出电路 数字像元 非均匀校正 盲元补偿
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基于带隙基准的改进型像元共享CTIA红外读出电路设计
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作者 王坤 关晓宁 +5 位作者 康智博 张凡 张焱超 邓旭光 周峰 芦鹏飞 《激光技术》 CAS CSCD 北大核心 2024年第6期816-821,共6页
为了提高红外读出电路动态范围、增强红外成像质量,加入暗电流抑制模块电路,设计了一种四像元分时共享的电容反馈跨阻放大器(CTIA)和带隙基准源相互配合的高性能红外读出电路。通过带隙基准源产生两个基准电压586 mV和293 mV,其中293 m... 为了提高红外读出电路动态范围、增强红外成像质量,加入暗电流抑制模块电路,设计了一种四像元分时共享的电容反馈跨阻放大器(CTIA)和带隙基准源相互配合的高性能红外读出电路。通过带隙基准源产生两个基准电压586 mV和293 mV,其中293 mV基准电压值的温漂系数达到1.49×10-6/℃,可对分流管的栅极和源极提供稳定的电压偏置,实现对暗电流的精准撇除。结果表明,该电路可实现电流信号从10 pA~10 nA宽动态范围的积分电压读出,读出数据通过线性拟合,拟合优度R 2达到0.9992,说明电路性能良好。此研究未来可应用到线列和面阵的红外探测器中。 展开更多
关键词 探测器 读出电路 暗电流抑制 像元共享 带隙基准
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A Fully Integrated CMOS Readout Circuit for Particle Detectors 被引量:2
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作者 张雅聪 陈中建 +2 位作者 鲁文高 赵宝瑛 吉利久 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2007年第2期182-188,共7页
Novel schemes for a charge sensitive amplifier (CSA) and a CR-(RC), semi-Gaussian shaper in a fully integrated CMOS readout circuit for particle detectors are presented. The CSA is designed with poly-resistors as ... Novel schemes for a charge sensitive amplifier (CSA) and a CR-(RC), semi-Gaussian shaper in a fully integrated CMOS readout circuit for particle detectors are presented. The CSA is designed with poly-resistors as feedback components to reduce noise. Compared with conventional CSA, the input referred equivalent noise charge(ENC) is simulated to be reduced from 5036e to 2381e with a large detector capacitance of 150pF at the cost of 0.5V output swing loss. The CR-(RC),semi-Gaussian shaper uses MOS transistors in the triode region in series with poly-resistors to compensate process variation without much linearity reduction. 展开更多
关键词 charge sensitive amplifier SHAPER readout circuit noise optimization
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