Electrostatic discharge (ESD) protection device with simultaneous and distributed self-biasing for multi-finger turn-on
    3.
    发明申请
    Electrostatic discharge (ESD) protection device with simultaneous and distributed self-biasing for multi-finger turn-on 有权
    静电放电(ESD)保护装置,具有同时分布的自适应多指开启

    公开(公告)号:US20050180073A1

    公开(公告)日:2005-08-18

    申请号:US11105103

    申请日:2005-04-13

    摘要: An electrostatic discharge (ESD) protection circuit for a semiconductor integrated circuit (IC) that protects core circuitry of the IC during normal operations, and shunts ESD events during non-powered mode of the IC. The ESD protection circuitry includes a multi-fingered MOS transistor, each finger respectively adapted for coupling between an I/O pad and a first supply line of the IC. An ESD detector is coupled to the I/O pad via a first terminal, and a second terminal is adapted for coupling to a second supply line potential of the IC. A parasitic capacitance is formed between the second supply line potential of the IC and the first supply line potential. A transfer circuit is coupled to a third terminal of the ESD detector and is adapted for biasing at least one gate respectively associated with at least one finger of the multi-fingered MOS transistor.

    摘要翻译: 用于在正常操作期间保护IC的核心电路的半导体集成电路(IC)的静电放电(ESD)保护电路,并且在IC的非供电模式期间分流ESD事件。 ESD保护电路包括多指MOS晶体管,每个手指分别适于在IC的I / O焊盘和第一电源线之间耦合。 ESD检测器经由第一端子耦合到I / O焊盘,并且第二端子适于耦合到IC的第二电源线电位。 在IC的第二供电线电位和第一供电线电位之间形成寄生电容。 传输电路耦合到ESD检测器的第三端子,并且适于偏置分别与多指MOS晶体管的至少一个手指相关联的至少一个栅极。