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    • 4. 发明公开
    • 디지털 위상검출기 및 디지털 위상검출신호의 발생을 위한방법
    • 数字相位检测器和数字相位检测信号的产生方法
    • KR1020080005144A
    • 2008-01-10
    • KR1020070068233
    • 2007-07-06
    • 내셔널 세미컨덕터 저머니 아게
    • 베르커하인쯔에브너크리스티안
    • H03L7/091H03L7/087
    • H03L7/093H03L7/091
    • A digital phase detector and a method for generating a digital phase detection signal are provided to designate phasing for a sampling clock signal having higher frequency than an input signal. A digital phase detector includes a phase-change-device, a sampling device(14), and evaluation devices(20,22). The phase-change-device generate sub sampling clock signal. The sub sampling clock signal is controllable in smaller unit than a cycle. The sampling device samples an input clock signal for a more significant first digital component by using the sub sampling clock signal. The evaluation device evaluates the first digital component to generate a digital control signal based on the evaluation, controls the phase-change-device, and generates a second digital component.
    • 提供数字相位检测器和用于产生数字相位检测信号的方法,以指定具有比输入信号高的频率的采样时钟信号的相位。 数字相位检测器包括相变装置,采样装置(14)和评估装置(20,22)。 相变装置产生副采样时钟信号。 子采样时钟信号可以以比循环更小的单位进行控制。 采样装置通过使用子采样时钟信号对更重要的第一数字分量的输入时钟信号进行采样。 评估装置基于评估来评估第一数字分量以产生数字控制信号,控制相变装置,并产生第二数字分量。
    • 5. 发明公开
    • 대기 전류 및 공통 모드 제어 기능이 조합된 AB급 증폭기회로
    • 具有组合电流和共模控制的AB类放大器电路
    • KR1020070112065A
    • 2007-11-22
    • KR1020070048830
    • 2007-05-18
    • 내셔널 세미컨덕터 저머니 아게
    • 에브너크리스티안
    • H03F3/20
    • H03F3/45183H03F3/45085H03F2203/45361H03F2203/45504H03F2203/45702
    • A class AB amplifier circuit with combined quiescent current and common mode control is provided to prevent any coupling between separate control loops by combining two control functions in one and the same control path. First and second supply terminals(12,14) supply a first supply potential(Vss) and a second supply potential(Vdd) to an amplifier circuit. An output stage has a first output node(16) and a second output node(18) for output of differential output signals(Voutn,Voutp). The first output node is connected to the first supply terminal and the second supply terminal via first and second output transistors(T1,T2), respectively. The second output node is connected to the first supply terminal and the second supply terminal via third and fourth output transistors(T3,T4). A control stage is input with an input signal(Vinn,Vinp) to control the output transistors. A control path is fed back into the control stage for the combined control of the quiescent currents of the output transistors and a common mode potential of the differential output signal.
    • 提供具有组合静态电流和共模控制的AB类放大器电路,通过将两个控制功能组合在同一控制路径中,防止分离的控制回路之间的任何耦合。 第一和第二电源端子(12,14)向放大器电路提供第一电源电位(Vss)和第二电源电位(Vdd)。 输出级具有用于输出差分输出信号(Voutn,Voutp)的第一输出节点(16)和第二输出节点(18)。 第一输出节点分别经由第一和第二输出晶体管(T1,T2)连接到第一电源端子和第二电源端子。 第二输出节点经由第三和第四输出晶体管(T3,T4)连接到第一电源端子和第二电源端子。 用输入信号(Vinn,Vinp)输入控制级,以控制输出晶体管。 将控制路径反馈到控制级,用于组合控制输出晶体管的静态电流和差分输出信号的共模电位。