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    Semiconductor switch circuit signal processing apparatus and ultrasound diagnostic apparatus
    2.
    发明公开
    Semiconductor switch circuit signal processing apparatus and ultrasound diagnostic apparatus 审中-公开
    HalbleiterschaltkreisSignalverarbeitungsgerätundUltraschalldiagnosegerät

    公开(公告)号：EP2852059A1

    公开(公告)日：2015-03-25

    申请号：EP14180728.9

    申请日：2014-08-12

    申请人： Hitachi Power Semiconductor Device, Ltd.

    发明人： Honda, Hironobu ,  Yamashita, Fumiaki ,  Aizawa, Junichi

    IPC分类号： H03K17/687 ,  H03K17/082 ,  H03K17/06

    CPC分类号： H03K17/102 ,  A61B8/4444 ,  H03K17/063 ,  H03K17/0822 ,  H03K17/6871 ,  H03K17/6874 ,  H03K2017/066 ,  H03K2217/0009 ,  H03K2217/0054

    摘要： A semiconductor switch circuit (90) comprises: a first switch pair (81) including two MOSFETs(811, 812) having gates connected one another and sources connected to one another, and a zener diode (ZD1) reversely connected between the gates and sources of the MOSFETs; a second switch pair (82) including two MOSFETs (821, 822) having gates connected one another and sources connected to one another, and a zener diode (ZD2) reversely connected between the gates and sources of the MOSFETs; and a third switch pair (83) comprising two MOSFETs (831, 832); having gates connected to one another and sources connected to one another. The first switch pair (81) and the second switch pair (82) are connected in series between two input/output terminals through a connecting node. The third switch pair (83) is connected to the connecting node between the first switch pair and the second switch pair.

    摘要翻译： 半导体开关电路（90）包括：第一开关对（81），包括具有彼此连接的栅极和彼此连接的源极的两个MOSFET（811,812）和反向连接在栅极和源极之间的齐纳二极管（ZD1） 的MOSFET; 第二开关对（82），包括具有彼此连接的栅极和彼此连接的源极的两个MOSFET（821,822）和反向连接在MOSFET的栅极和源极之间的齐纳二极管（ZD2）; 和包括两个MOSFET（831,832）的第三开关对（83）; 具有彼此连接的门和彼此连接的源。 第一开关对（81）和第二开关对（82）通过连接节点串联连接在两个输入/输出端子之间。 第三开关对（83）连接到第一开关对和第二开关对之间的连接节点。