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| 1 | Linearity analysis of closed-loop capacitive accelerometer due to distance mismatch between plates and the influence of compensation capacitor array显示文摘This paper presents mathematical formulae showing that the distance mismatch for an uncentered proof mass in an accelerator sensor does not influence the linearity of the closed-loop accelerometer as a whole.This asymmetry in sensors only introduces an output voltage offset in the readout integrated circuit.Numerical simulation using Matlab/Simulink confirms the mathematical conclusion.The linear response after compensation with a conventional capacitor array is also simulated and analyzed.Results show that there is a loss in linearity.Similar results hold not only for the continuous-time architecture,but also for a time-divided architecture.A readout integrated circuit with a time-divided architecture is designed and fabricated using a 0.35μm HV CMOS process.An accelerometer composed of a microelectromechanical system sensor with severe built-in distance mismatch and the designed readout integrated circuit is tested.Test results show that the nonlinearity of such accelerometer is within 0.3%. | HUANG JingQing ZHAO Meng ZHANG TingTing CHEN ZhongJian HONG LiChen WU Feng ZHANG YaCong LU WenGao GAO ChengChen HAO YiLong | 2014 | Science China(Information Sciences)2014，57，6： | 2 |
| 2 | A precise compensated bandgap reference without resistors 显示文摘 | SONG Ying LU Wengao | 2002 | IEEE J Sol Sta Circ2002，137，7： | 1 |
| 3 | A Fully Integrated CMOS Readout Circuit for Particle Detectors 显示文摘 | QZhang Yacong Chen Zhongjian Lu Wengao | 2007 | Chinese Journal of Semiconductors2007，28，2： | 1 |
| 4 | A Low Power High Speed ROIC Design for 1024 X 1024 IRFPA with Novel Readout Stage显示文摘 | Chang Liu Wengao Lu Zhongjian Chen | 2008 | 1EEE2008，，： | 1 |
| 5 | Designing of a micromachined gyroscope system with a closed-loop DC biased interface ASIC显示文摘In this paper, a micromachined gyroscope system composed of a vibratory gyroscope with its interface ASIC is presented. The system adopts a DC sensing method to detect the capacitive motion, which is insensitive to the mismatch of the gyroscope capacitors and can eliminate high frequency signals from the chip. Therefore it offers a commendable noise performance with simplified topology. Low noise design can be achieved by a continuous-time charge sensitive amplifier with the input-referred noise voltage of 9.833 nV/rtHz at10 kHz. A novel high voltage(HV) buffer is adopted in the drive mode to strengthen its drive signal, so that the common-mode voltage of it is made at 5 V that is compatible with the gyroscope. The HV buffer utilizes two sets of power supply to achieve both good noise performance and HV output. The ASIC chip is fabricated in the 0.35 μm 2P4 M BCD HV process, and is 2.5×2.0 mm2 in dimension. The test results prove that the system achieves a stable closed-loop oscillation in the drive mode. Furthermore, the in-phase demodulation result of the gyroscope system achieves a nonlinearity of 0.14% within the sense range of 0?–500?/s. | TAO TingTing LU WenGao FANG Ran ZHANG YaCong CHEN ZhongJian YAN GuiZhen | 2014 | Science China(Information Sciences)2014，57，10： | 1 |
| 6 | Low Power EEPROM Designed for Sensor Interface Circuit显示文摘 | MENG Xiangyun YANG Sen CHEN Zhongjian LU Wengao ZHANG Yacong HUANG Jingqing LI Haojiong SU Weiguo LI Song | 2012 | Chinese Journal of Electronics2012，21，4： | 1 |
| 7 | A 16-bit Hybrid ADC with Circular-Adder-Based Counting for 15μm Pitch 640×512 LWIR FPAs显示文摘A hybrid Analog to digital converter(ADC) is presented for long-wave infrared focal plane arrays. A two-stage quantization structure is applied in the folding integration process, which results in better chargehandling capacity and higher linearity compared with conventional designs while using fewer transistors at the pixel level. By employing a circular-adder-based counting structure with 3 T dynamic memory cells, hardware consumption can be reduced. A pixel circuit of pitch15μm has been designed using the 0.18μm Complementary metal-oxide-semiconductor(CMOS) process. The power consumption of the pixel-level ADC is 0.214μW, and the charge-handling capacity is 1 Ge-. Simulation results demonstrate a signal-to-noise ratio of 90 d B and a nonlinearity of 0.11%. | HUANG Zhaofeng ZHU Yajun LU Wengao NIU Yuze ZHANG Shengdong CHEN Zhongjian | 2020 | Chinese Journal of Electronics2020，29，2： | 1 |
| 8 | A Fully Integrated CMOS Readout Circuit for Particle Detectors显示文摘 | Zhang Yacong Chen Zhongjian Lu Wengao Zhao Baoying and Ji Lijiu | 2007 | Chinese Journal of Semiconductors2007，28，2： | 1 |
| 9 | Design and test results of a low-noise readout integrated circuit for high-energy particle detectors显示文摘A low-noise readout integrated circuit for high-energy particle detector is presented.The noise of charge sensitive amplifier was suppressed by using single-side amplifier and resistors as source degeneration.Continuous-time semi-Gaussian filter is chosen to avoid switch noise.The peaking time of pulse shaper and the gain can be programmed to satisfy multi-application.The readout integrated circuit has been designed and fabricated using a 0.35 μm double-poly triple-metal CMOS technology.Test results show the functions of the readout integrated circuit are correct.The equivalent noise charge with no detector connected is 500–700 e in the typical mode,the gain is tunable within 13–130 mV/fC and the peaking time varies from 0.7 to 1.6 μs,in which the average gain is about 20.5 mV/fC,and the linearity reaches 99.2%. | ZHANG Mingming CHEN Zhongjian ZHANG Yacong LU Wengao JI Lijiu | 2010 | Nuclear Science and Techniques2010，21，1： | 1 |
| 10 | High performance linear 288 x4 CMOS readout integrated circuit with time delay integration 显示文摘 | Gao Jun Lu Wengao Liu Jing | 2004 | Universitatis Pekinensis2004，40，3： | 1 |
| 11 | A versatile 16-channel front-end integrated circuit for semiconductor radiation detectors显示文摘A CMOS front-end integrated circuit consisting of 16 identical analog channels is proposed for semiconductor radiation detectors. Each of the 16 channels has a low noise charge sensitive amplifier, a pulse shaper, a peak detect and hold circuit and a discriminator, while analog voltage and channel address are routed off the chip. It can accommodate both electron and hole collection with selectable gain and peaking time. Sequential and sparse readout, combining with self-trigger and external trigger, makes four readout modes. The circuit is implemented in a 0.35 μm DP4M (double-poly-quad-metal) CMOS technology with an area of 2.5×1.54 mm2 and power dissipation of 60 mW. A single channel chip is tested with Verigy 93000. The gain is adjustable from 13 to 130 mV·fC–1 while the peaking time varies between 0.7 and 1.6 μs. The linearity is more than 99% and the equivalent noise charge is about 600e. | ZHANG Yacong CHEN Zhongjian LU Wengao AN Huiyao JIN Ye JI Lijiu | 2010 | Nuclear Science and Techniques2010，21，2： | 0 |
| 12 | 288×4 Time Delay and Integration Readout IC for Infrared Focal Plane Array显示文摘 | CHEN Zhongjian LU Wengao ZHANG Yacong JI Lijiu | 2008 | Chinese Journal of Electronics2008，17，4： | 0 |
| 13 | Freestanding MXene-based macroforms for electrochemical energy storage applications显示文摘Freestanding MXene-based macroforms have gained significant attention as versatile components in electrochemical energy storage applications owing to their interconnected conductive network,strong mechanical strength,and customizable surface chemistries derived from MXene nanosheets.This comprehensive review article encompasses key aspects related to the synthesis of MXene nanosheets,strategies for structure design and surface medication,surface modification,and the diverse fabrication methods employed to create freestanding MXene-based macroform architectures.The review also delves into the recent advancements in utilizing freestanding MXene macroforms for electrochemical energy storage applications,offering a detailed discussion on the significant progress achieved thus far.Notably,the correlation between the macroform’s structural attributes and its performance characteristics is thoroughly explored,shedding light on the critical factors influencing efficiency and durability.Despite the remarkable development,the review also highlights the existing challenges and presents future perspectives for freestanding MXenebased macroforms in the realms of high-performance energy storage devices.By addressing these challenges and leveraging emerging opportunities,the potential of freestanding MXene-based macroforms can be harnessed to enable groundbreaking advancements in the field of energy storage. | Qiongqiong Lu Congcong Liu Yirong Zhao Wengao Pan Kun Xie Pengfei Yue Guoshang Zhang Ahmad Omar Lixiang Liu Minghao Yu Daria Mikhailova | 2023 | SusMat2023，3，4： | 0 |
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