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    • 69. 发明授权
    • Switching circuit
    • 开关电路
    • US08766699B2
    • 2014-07-01
    • US13490240
    • 2012-06-06
    • Kazuhiro FujikawaNobuo ShigaTakashi OhiraKazuyuki WadaHiroshi Ishioka
    • Kazuhiro FujikawaNobuo ShigaTakashi OhiraKazuyuki WadaKazuya Ishioka
    • H03K17/30
    • H03K17/04123H03K2217/0036H03K2217/0045Y10T307/747
    • A switching circuit according to one embodiment includes first to fourth semiconductor switch elements. A pulse-like signal is applied to each input terminal of the switch elements such that when the first and fourth switch elements are in an ON (OFF) state, the remaining switch elements are in an OFF (ON) state. The switching circuit includes first and second capacitance elements. The first capacitance elements connected between an output terminal of the second semiconductor switch element and the second capacitance elements connected between an input terminal of the second semiconductor switch element and an output terminal of the fourth semiconductor switch element has a capacitance to reduce a parasitic capacitance between the input and output terminals of each of the fourth and second switch elements at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal.
    • 根据一个实施例的开关电路包括第一至第四半导体开关元件。 脉冲状信号被施加到开关元件的每个输入端子,使得当第一和第四开关元件处于导通(OFF)状态时,剩余的开关元件处于断开(ON)状态。 开关电路包括第一和第二电容元件。 连接在第二半导体开关元件的输出端子和连接在第二半导体开关元件的输入端子和第四半导体开关元件的输出端子之间的第二电容元件之间的第一电容元件具有电容以减小第二半导体开关元件的输出端之间的寄生电容 以与脉冲状信号的时钟频率相同的频率N倍(N为1以上的整数)的第四开关元件和第二开关元件的输入输出端子。