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    • 4. 发明申请
    • TECHNIQUES FOR APPROXIMATING A DIFFERENCE BETWEEN TWO CAPACITANCES
    • 对两个容量之间的差异进行估计的技术
    • WO2012015501A1
    • 2012-02-02
    • PCT/US2011/033926
    • 2011-04-26
    • MEDTRONICS, INC.WU, Jin, YongTYLER, Larry, E.
    • WU, Jin, YongTYLER, Larry, E.
    • G01P15/125G01D5/24G01R27/26
    • G01P15/125A61N1/36542A61N1/36578G01D5/24G01R27/2605
    • A system includes a capacitance adjustment module and a control module. The capacitance adjustment module is configured to connect one or more of N capacitors in parallel with one of a first and second capacitance. The control module identifies the smaller of the first and second capacitances and identifies the larger of the first and second capacitances. Subsequently, the control module, during each of M iterations, instructs the capacitance adjustment module to connect at least one of the N capacitors across a set of nodes in parallel with the smaller identified capacitance, and determines whether the capacitance associated with the set of nodes is greater than the larger identified capacitance. After the M iterations, the control module approximates the difference between the first and second capacitances based on which of the N capacitors are connected across the nodes. M and N are integers greater than or equal to 1.
    • 系统包括电容调整模块和控制模块。 电容调整模块被配置为将N个电容器中的一个或多个并联连接到第一和第二电容中的一个。 控制模块识别第一和第二电容中较小的一个,并识别第一和第二电容中较大的一个。 随后,控制模块在每次M次迭代期间指示电容调整模块将跨越一组节点的N个电容器中的至少一个与较小的识别电容并联,并且确定与该组节点相关联的电容 大于较大的识别电容。 在M次迭代之后,控制模块基于N个电容器中的哪一个在节点之间连接来近似第一和第二电容之间的差异。 M和N是大于或等于1的整数。
    • 6. 发明申请
    • LOW INPUT CAPACITANCE ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT UTILIZING FEEDBACK
    • 低输入电容静电放电保护电路应用反馈
    • WO2003092074A1
    • 2003-11-06
    • PCT/US2003/012986
    • 2003-04-24
    • MEDTRONIC, INC.
    • MAY, James, T.TYLER, Larry, E.
    • H01L27/02
    • H01L27/0255H01L2924/0002H01L2924/00
    • An ESD protection circuit protects circuitry internal to an integrated circuit from ESD damage to electrostatic discharge voltages occurring at one or more of the inputs of the integrated circuit while maintaining substantially zero effective capacitance at the inputs. The ESD protection circuit includes a pair of diodes of opposite conductivity coupled between at least one of the inputs of the integrated circuit and an internal node thereof for providing current paths to the operating supply rails when ESD voltages occurring at the input forward bias the diodes. A unity gain amplifier provides feedback between the input and the internal circuit node to maintain a zero voltage difference therebetween whereby the effective capacitance seen at the input is reduced to substantially zero.
    • ESD保护电路保护集成电路内部的电路免受ESD损坏,从而在集成电路的一个或多个输入端产生静电放电电压,同时在输入端保持基本为零的有效电容。 ESD保护电路包括耦合在集成电路的至少一个输入端和其内部节点之间的相反导电性的一对二极管,用于在输入端发生的ESD电压正向偏置二极管时提供到工作电源轨的电流路径。 单位增益放大器在输入和内部电路节点之间提供反馈以在其间保持零电压差,由此在输入处看到的有效电容被减小到基本为零。