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    • 1. 发明申请
    • FOLDING STAGE FOR A FOLDING ANALOG-TO-DIGITAL CONVERTER
    • 折叠模数转换器的折叠阶段
    • WO1996002087A1
    • 1996-01-25
    • PCT/IB1995000519
    • 1995-06-27
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN AB
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN ABVENES, Arnoldus, Gerardus, WilhelmusNAUTA, Bram
    • H03M01/12
    • H03M1/205H03M1/141
    • A folding stage (FB) for a folding analog-to-digital converter, the folding stage (FB) comprising: reference means having a plurality of consecutive reference terminals (RT1..RT11) for providing ascending different reference voltages; a first summing node (SNa), a second summing node (SNb) and a first output node (ONa); a plurality of differentially coupled transistor pairs (TAi/TBi), each one of the pairs comprising a first transistor (TAi) having a main current path and a control electrode which is coupled to an input terminal (IT) for receiving an input voltage to be folded and a second transistor (TBi) having a main current path and a control electrode which is coupled to a respective one (RTAi) of the consecutive reference terminals, the main current path of the first transistor (TAi) of consecutive transistor pairs being coupled alternately to the first summing node (SNa) and the second summing node (SNb), and the main current path of the associated second transistor (Tbi) being coupled alternately to the second summing node (SNb) and the first summing node (SNa); and a dummy structure comprising a first current source, a first dummy transistor (DTA) having a control electrode coupled to the input terminal (IT), a first main electrode connected to the first current source and a second main electrode coupled to one of the first (SNa) and second (SNb) summing nodes, a second current source, and a second dummy transistor having a control electrode coupled to a bias voltage terminal (BT), a first main electrode connected to the second current source and a second main electrode coupled to the other of the first (SNa) and second (SNb) summing nodes. The dummy structure reduces capacitive error currents in the differential output current which flows in the summing nodes of the folding stage by providing cancelling currents to the summing nodes.
    • 一种用于折叠模数转换器的折叠台(FB),所述折叠台(FB)包括:参考装置,具有用于提供上升的不同参考电压的多个连续参考端(RT1..RT11) 第一求和节点(SNa),第二求和节点(SNb)和第一输出节点(ONa); 多个差分耦合晶体管对(TAi / TBi),每对中的每一对包括具有主电流路径的第一晶体管(TAi)和耦合到输入端(IT)的控制电极,用于接收输入电压 被折叠的第二晶体管(TBi)和具有主电流路径的第二晶体管(TBi)和耦合到所述连续参考端子的相应一个(RTAi)的控制电极,所述连续晶体管对的第一晶体管(TAi)的主电流路径为 交替地耦合到第一求和节点(SNa)和第二求和节点(SNb),并且相关联的第二晶体管(Tbi)的主电流路径被交替地耦合到第二求和节点(SNb)和第一求和节点(SNa ); 以及包括第一电流源,具有耦合到所述输入端(IT)的控制电极的第一虚拟晶体管(DTA))的虚拟结构,连接到所述第一电流源的第一主电极和耦合到所述第一电流源 第一(SNa)和第二(SNb)求和节点,第二电流源和具有耦合到偏置电压端子(BT)的控制电极的第二虚拟晶体管,连接到第二电流源的第一主电极和第二主电极 电极耦合到第一(SNa)和第二(SNb)求和节点中的另一个。 虚拟结构通过向求和节点提供消除电流来减少在折叠级的求和节点中流动的差分输出电流中的电容性误差电流。
    • 3. 发明申请
    • FOLDING STAGE AND FOLDING ANALOG-TO-DIGITAL CONVERTER
    • 折叠阶段和折叠模拟数字转换器
    • WO1996002088A1
    • 1996-01-25
    • PCT/IB1995000520
    • 1995-06-27
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN AB
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN ABNAUTA, BramVENES, Arnoldus, Gerardus, Wilhelmus
    • H03M01/12
    • H03M1/205H03M1/141
    • A folding stage (FB) for a folding analog-to-digital converter, the folding stage (FB) comprising: reference means having a plurality of consecutive reference terminals (RT1..RT11) for providing ascending different reference voltages; a first summing node (SNa), a second summing node (SNb) and a first output node (ONa); a plurality of differentially coupled transistor pairs (TAi/TBi), each one of the pairs comprising a first transistor (TAi) having a main current path and a control electrode which is coupled to an input terminal (IT) for receiving an input voltage to be folded and a second transistor (TBi) having a main current path and a control electrode which is coupled to a respective one (RTi) of the consecutive reference terminals, the main current path of the first transistor (TAi) of consecutive transistor pairs being coupled alternately to the first summing node (SNa) and the second summing node (SNb), and the main current path of the associated second transistor (TBi) being coupled alternately to the second summing node (SNb) and the first summing node (SNa); and current-to-voltage converter means (IVCONV) comprising a first resistor (12) connected between the first output node (ONa) and the first summing node (SNa) to provide a first output voltage (Va) and a transconductance stage (2) having an inverting input (4) coupled to the first summing node (SNa) and an output (8) coupled to the first output node (ONa). The low input impedance of the current-to-voltage converter means (IVCONV) prevents high voltage swing at the summing nodes and reduces capacitive signal current flow. The current-to-voltage converter means (IVCONV) further provides a high output voltage swing despite of loading with a low-ohmic interpolation network.
    • 一种用于折叠模数转换器的折叠台(FB),所述折叠台(FB)包括:参考装置,具有用于提供上升的不同参考电压的多个连续参考端(RT1..RT11) 第一求和节点(SNa),第二求和节点(SNb)和第一输出节点(ONa); 多个差分耦合晶体管对(TAi / TBi),每对中的每一对包括具有主电流路径的第一晶体管(TAi)和耦合到输入端(IT)的控制电极,用于接收输入电压 被折叠的第二晶体管(TBi)和具有主电流路径的第二晶体管(TBi)和耦合到连续参考端子的相应一个(RTi)的控制电极,连续晶体管对的第一晶体管(TAi)的主电流路径为 交替地耦合到第一求和节点(SNa)和第二求和节点(SNb),并且相关联的第二晶体管(TBi)的主电流路径被交替地耦合到第二求和节点(SNb)和第一求和节点(SNa ); 以及电流 - 电压转换器装置(IVCONV),包括连接在第一输出节点(ONa)和第一求和节点(SNa)之间的第一电阻器(12),以提供第一输出电压(Va)和跨导级 )具有耦合到第一求和节点(SNa)的反相输入(4)和耦合到第一输出节点(ONa)的输出(8)。 电流 - 电压转换器(IVCONV)的低输入阻抗防止加法节点处的高电压摆幅,并降低电容信号电流。 电流 - 电压转换器(IVCONV)进一步提供高输出电压摆幅,尽管加载了低欧姆插值网络。
    • 4. 发明申请
    • LINE DRIVER WITH ADAPTIVE OUTPUT IMPEDANCE
    • 具有自适应输出阻抗的线路驱动器
    • WO1995002931A1
    • 1995-01-26
    • PCT/IB1994000190
    • 1994-07-04
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN AB
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN ABNAUTA, Bram
    • H04B03/02
    • H04L25/0278H04B3/02H04L25/028
    • A line driver comprising: an input terminal (2) for receiving an input signal, an output terminal (10) for connecting a load (8), a first (12) and a second (22) transconductance-controlled transconductor having substantially equal transconductances, each transconductor having a non-inverting input (14; 24), an inverting input (16; 26), an output (18; 28) and a common control input (20) for controlling the transconductance, the non-inverting inputs (14; 24) of the first (12) and second (22) transconductors being coupled to the input terminal (2), the outputs (18; 28) of the first (12) and second (22) transconductors being coupled to the output terminal (10), the inverting input (16) of the first transconductor (12) being coupled to a point (6) of reference potential, the inverting input (26) of the second transconductor (22) being coupled to the output terminal (10), and an amplifier (32) having a non-inverting input (34), an inverting input (36) and an output (38) coupled to, respectively, the input terminal (2), the output terminal (10) and the common control input (20) of the first (12) and the second (22) transconductors.
    • 一种线驱动器,包括:用于接收输入信号的输入端子(2),用于连接负载(8)的输出端子(10),具有基本相等的跨导的第一(12)和第二(22)跨导控制的跨导体 ,每个跨导体具有非反相输入(14; 24),反相输入(16; 26),输出(18; 28)和用于控制跨导的公共控制输入(20),非反相输入 所述第一(12)和第二(22)跨导体耦合到所述输入端子(2),所述第一(12)和第二(22)跨导体的输出端(18; 28) 端子(10),第一跨导体(12)的反相输入(16)耦合到参考电位的点(6),第二跨导体(22)的反相输入端(26)耦合到输出端子 10)和具有非反相输入(34),反相输入(36)和输出(38)的放大器(32) 即,第一(12)和第二(22)跨导体的输入端子(2),输出端子(10)和公共控制输入端(20)。