共查询到20条相似文献,搜索用时 78 毫秒
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NEC Electronics公司(位于加州的Santa Clara)的研究人员,使用原来实现2倍速传输的CMOS晶体管,实现了4倍速的传输。该公司的研究人员在最近举行的ISSCC会议上发表文章,介绍了他们所研制的多路分离器测试样品。这个样品用常规的0.18微米工艺技术制成, 相似文献
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本文介绍了一种能方便地实现与CMOS器件兼容的高频横向双极晶体管。与常规纵向双极晶体管相比,它能使BiCMOS技术具有更低的成本。器件性能也与常规高频纵向双极晶体管相仿。采用这种横向双极晶体管的BiCMOS门电路也与采用常规纵向双极晶体管具有同样优良的性能。 相似文献
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针对CMOS集成电路制造工艺中出现的阈值电压漂移问题,通过对大量工艺实验数据的统计分析,提出了电路失效模型,又运用理论分析,找出了问题的原因所在。据此改进了设计和工艺,并经实验验证,效果良好。 相似文献
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本文介绍了一种用P埋层CMOS工艺制造的横向磁敏晶体管(LMT)。器件结构是双基极、双集电极npn晶体管。它具有抑制侧向注入效应,即将注入集中于发射区的中部,在中性基区的少数载流子受到双重偏转作用,消除了横向无功电流。在CMOS工艺的基础上加了P埋层,消除了纵向无功电流。器件对磁场有良好的线性响应。 相似文献
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本文提出了一种适用于CMOS工艺中横向双极型晶体管直流特性计算的新方法。新方法采用解析形式计算电流I_c,所需模型参数均保留明确的物理意义,不用数值和曲线拟合参数的方法就能得到处于任何注入水平的本征收集极电流I_c和跨导g_(??)。该方法为在设计高精度的CMOS模拟IC中利用横向双极器件提供了良好的CAD器件模型。模型值和实验值呈现良好的一致性。 相似文献
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在 CMOS工艺结构中,将位于阱中的 MOS 器件加适当的偏置,可以使其变为体内器件、以横向双极管的模式工作.本文利用 3μm P-well和 2μm N-well两种 CMOS工艺设计了这种横向双极器件,分析讨论了这种器件的工作原理和特点,并给出其典型的直流和交流参数的实验数据.这些分析和实验数据将有助于电路设计者了解和掌握该器件的电流、频率工作范围及特性,以便在CMOS电路中充分发挥其特长. 相似文献
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文章研究了BF2^ 注入对PMOS晶体管开启电压的影响,试验发现,在我们的工艺条件下,BF2^ 注入能量是影响PMOS管开启电压的主要因素,能量高于67.5kev的BF2^ 注入可导致开启电压正漂,而退火对开启电压正漂没有影响,F离子也没有促进B穿透。 相似文献
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Toan Thanh Dao Toshinori Matsushima Rainer Friedlein Hideyuki Murata 《Organic Electronics》2013,14(8):2007-2013
The authors report controllable threshold voltage (Vth) in a pentacene field-effect transistor based on a double-dielectric structure of poly(perfluoroalkenyl vinyl ether) (CYTOP) and SiO2. When a positive switching voltage is applied to the gate electrode of the transistor, electrons traverse through the pentacene and CYTOP layers and subsequently trapped at the CYTOP/SiO2 interface. The trapped electrons induce accumulation of additional holes in the pentacene conducting channel, resulting in a large Vth shift from ?4.4 to +4.6 V. By applying a negative switching voltage, the trapped electrons are removed from the CYTOP/SiO2 interface, resulting in Vth returning to an initial value. The Vth shift caused by this floating gate-like effect is reversible and very time-stable allowing the transistor to be applicable to a nonvolatile memory that has excellent retention stability of stored data. 相似文献
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DOE法在改善挠性板阻焊膜耐弯折性中的应用 总被引:1,自引:0,他引:1
感光阻焊油墨在挠性线路板的运用和生产过程中易发生弯折后断裂的问题,采用DOE方法优化工艺,获得最佳参数,大大提升了油墨的可折弯次数。感光阻焊油墨制程参数优化的DOE专案改进对于提高挠性线路板的产品合格率效果显著。 相似文献
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由于技术的迅速发展与突破,使集成电路的制造得以在短短的60年间,单一晶粒已经可以容纳数千万个电晶体的超大型集成电路。其主要工艺为CMOS工艺,原因是它有功耗低、集成度高、噪声低、抗辐射能力强等优点,但是传统bipolar工艺有频率高、功率大的优点,因此提出在CMOS中集成三极管、二极管。论述了在0.5μm CMOS工艺中集成NPN bipolar的方法以及各个关键技术指标的确定。 相似文献
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To solve the Flash-based FPGA in the manufacturing process, the ion implantation process will bring electrons into the floating gate of the P-channel Flash cell so that the Flash switch is in a weak conduction state, resulting in the Flash-based FPGA eigenstate current problem. In this paper, the mechanism of its generation is analyzed, and four methods are used including ultraviolet light erasing, high-temperature baking, X-ray irradiation, and circuit logic control. A comparison of these four methods can identify the circuit design by using circuit logic to control the path of the power supply that is the most suitable and reliable method to solve the Flash-based FPGA eigenstate current problem. By this method, the power-on current of 3.5 million Flash-based FPGA can be reduced to less than 0.3 A, and the chip can start normally. The function and performance of the chip can then be further tested and evaluated, which is one of the key technologies for developing Flash-based FPGA. 相似文献
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土壤水分自动观测数据质量控制与评估系统阈值研究方法 总被引:1,自引:0,他引:1
详细介绍了自动土壤水分数据质量控制系统中阈值的确定方法,通过对河南省历年人工观测的不同地域不同深度土壤水分数据的统计分析,结合河南省布设的GStarDNZ型土壤水分观测仪业务运行后的数据极值情况确定了各站点各层土壤水分数据的阈值。自动土壤水分数据智能评判软件采用有效的阈值,不仅可以对土壤水分观测仪器的运行状态进行监控,而且大大提高了土壤水分数据的可信度。 相似文献
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Boeun Cho Seong Hun Yu Moo Hyung Lee Juhee Lee Jun Young Lee Jeong Ho Cho Moon Sung Kang 《Organic Electronics》2014,15(12):3439-3444
We demonstrate the versatility of the threshold voltage control for organic thin-film transistors (OTFTs) based on formation of discontinuous pn-heterojunction on the active channel layer. By depositing n-type dioctyl perylene tetracarboxylic diimide molecules discontinuously onto base p-type pentacene thin films (the formation of the discontinuous pn-heterojunction), a positive shift of the threshold voltage was attained which enabled realizing a depletion-mode transistor from an original enhancement-mode pristine pentacene transistor. Careful control of the threshold voltage based on this method led assembling a depletion-load inverter comprising a depletion-mode transistor and an enhancement-mode transistor connected in series that yielded tunable signal inversion voltage approaching 0 V. In addition, the tunability could be applied to improve the program/erase signal ratio for non-volatile transistor memories by more than 4 orders of magnitude compared to reference memory devices made of pristine pentacene transistors. 相似文献