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    • 82. 发明授权
    • ESD protection network for circuit structures formed in a semiconductor
    • 用于在半导体中形成的电路结构的ESD保护网络
    • US06266222B1
    • 2001-07-24
    • US09223621
    • 1998-12-30
    • Paolo ColomboJacopo MulattiRoberto AnnunziataGiovanni CampardoMarco Maccarrone
    • Paolo ColomboJacopo MulattiRoberto AnnunziataGiovanni CampardoMarco Maccarrone
    • H02H904
    • H01L27/0259H01L27/0251
    • An ESD protection network protects a CMOS circuit structure integrated in a semiconductor substrate. The circuit structure includes discrete circuit blocks formed in respective substrate portions which are electrically isolated from one another and independently powered from at least one primary voltage supply having a respective primary ground, and from at least one secondary voltage supply having a respective secondary ground. This network includes a first ESD protection element for an input stage of the circuit structure; a second ESD protection element for an output stage of the circuit structure, the first and second protection elements having an input/output pad of the integrated circuit structure in common; a first ESD protection element between the primary supply and the primary ground; and a second ESD protection element between the secondary supply and the secondary ground.
    • ESD保护网络保护集成在半导体衬底中的CMOS电路结构。 电路结构包括形成在相应的衬底部分中的分立电路块,它们彼此电绝缘并且由至少一个具有各自的初级接地的初级电压源以及至少一个具有相应次级接地的次级电压源独立供电。 该网络包括用于电路结构的输入级的第一ESD保护元件; 用于所述电路结构的输出级的第二ESD保护元件,所述第一和第二保护元件具有所述集成电路结构的输入/输出焊盘; 主要供电和主地面之间的第一个ESD保护元件; 以及在次级电源和次级接地之间的第二ESD保护元件。
    • 83. 发明授权
    • Bidirectional charge pump generating either a positive or negative voltage
    • 双向电荷泵产生正或负电压
    • US06184741B2
    • 2001-02-06
    • US08900165
    • 1997-07-28
    • Andrea GhilardelliGiovanni CampardoJacopo Mulatti
    • Andrea GhilardelliGiovanni CampardoJacopo Mulatti
    • G05F110
    • G11C5/145
    • A charge pump comprises at least one charge pump stage including a first diode having an anode and a cathode, and a capacitor having a first plate connected to the cathode of the diode and a second plate connected to a clock signal that periodically varies between a reference voltage and a supply voltage, the anode of said diode forming a first terminal of the charge pump. The charge pump further comprises a second diode having an anode connected to the cathode of the first diode and a cathode forming a second terminal of the charge pump, first switching means for selectively coupling the first terminal of the charge pump to the voltage supply and second switching means for selectively coupling the second terminal of the charge pump to the reference voltage. The first switching means and the second switching means are respectively closed and open in a first operating condition whereby the second terminal of the charge pump acquires a voltage of the same polarity but higher in absolute value than said supply voltage. The first switching means and the second switching means are respectively open and closed in a second operating condition whereby the first terminal of the charge pump acquires a voltage of opposite polarity with respect to said voltage supply.
    • 电荷泵包括至少一个电荷泵级,其包括具有阳极和阴极的第一二极管,以及具有连接到二极管的阴极的第一板的电容器和连接到时钟信号的第二板,所述时钟信号周期性地在参考 电压和电源电压,所述二极管的阳极形成电荷泵的第一端子。 电荷泵还包括具有连接到第一二极管的阴极的阳极和形成电荷泵的第二端子的阴极的第二二极管,用于选择性地将电荷泵的第一端子耦合到电压源的第一开关装置和第二二极管 用于选择性地将电荷泵的第二端子耦合到参考电压的开关装置。 第一开关装置和第二开关装置分别在第一操作条件下闭合和断开,由此电荷泵的第二端子获得与所述电源电压相同的极性但绝对值高的电压。 第一开关装置和第二开关装置分别在第二操作条件下打开和关闭,由此电荷泵的第一端子获得相对于所述电压源的极性相反的电压。
    • 84. 发明授权
    • Memory cell integrated structure with corresponding biasing device
    • 存储单元集成结构与相应的偏置装置
    • US6151251A
    • 2000-11-21
    • US295667
    • 1999-04-21
    • Giovanni CampardoStefano ZanardiMaurizio BranchettiStefano Ghezzi
    • Giovanni CampardoStefano ZanardiMaurizio BranchettiStefano Ghezzi
    • G05F3/20H01L27/115G11C11/34
    • H01L27/115G05F3/205
    • A biasing device for biasing a memory cell having a substrate bias terminal associated therewith. The biasing device includes a first sub-threshold circuitry block adapted to supply an appropriate current during the device standby phase through a restore transistor connected between a supply voltage reference and the substrate bias terminal of the memory cell, and having a control terminal connected to a bias circuit, in turn connected between the supply voltage reference and a ground voltage reference to drive the restore transistor with a current of limited value. The device further includes a second feedback block for fast charging the substrate bias terminal, being connected between the supply voltage reference and the ground voltage reference and comprising a first bias transistor having a control terminal connected to the ground voltage reference via a stabilization transistor, having in turn a control terminal connected to an output node, and to the control terminal of a first regulation transistor connected between the supply voltage reference and the ground voltage reference, the stabilization transistor and first regulation transistor providing feedback for the bias transistor, thereby to restrict the voltage range of the output node.
    • 一种用于偏置具有与其相关联的衬底偏置端子的存储单元的偏置装置。 偏置装置包括第一子阈值电路块,其适于在器件待机阶段期间通过连接在电源电压基准和存储单元的衬底偏置端之间的恢复晶体管提供适当的电流,并且具有连接到存储器单元的控制端 偏置电路又连接在电源参考电压和地电压基准之间,以有限的电流驱动恢复晶体管。 该装置还包括用于对衬底偏置端子进行快速充电的第二反馈块,其连接在电源电压基准和接地电压基准之间,并且包括具有经由稳定晶体管连接到接地电压基准的控制端的第一偏置晶体管, 连接到输出节点的控制终端,以及连接在电源电压基准和接地电压基准之间的第一调节晶体管的控制端,稳压晶体管和第一调节晶体管为偏置晶体管提供反馈,从而限制 输出节点的电压范围。
    • 86. 发明授权
    • Sense amplifier circuit for semiconductor memory devices
    • 用于半导体存储器件的感测放大器电路
    • US5982666A
    • 1999-11-09
    • US13141
    • 1998-01-26
    • Giovanni Campardo
    • Giovanni Campardo
    • G11C17/00G11C16/06G11C16/28
    • G11C16/28
    • A sense amplifier circuit for a semiconductor memory device comprises first current/voltage conversion means for converting a current of a memory cell to be read into a voltage signal, second current voltage/conversion means for converting a reference current into a reference voltage signal, and voltage comparator means for comparing the voltage signal with the reference voltage signal. The sense amplifier circuit comprises capacitive decoupling means for decoupling the voltage signal from the comparator means, and means for providing the capacitive decoupling means with an electric charge suitable for compensating an offset voltage introduced in the voltage signal by an offset current superimposed on the current of the memory cell to be read.
    • 一种用于半导体存储器件的读出放大器电路包括用于将要读取的存储单元的电流转换为电压信号的第一电流/电压转换装置,用于将参考电流转换为参考电压信号的第二电流电压/转换装置,以及 电压比较器装置,用于将电压信号与参考电压信号进行比较。 感测放大器电路包括用于使来自比较器装置的电压信号去耦的电容去耦装置,以及用于向电容去耦装置提供适合于补偿在电压信号中引入的偏移电压的电荷的装置, 要读取的存储单元。