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    • 1. 发明申请
    • Output driver circuit for an integrated circuit
    • 用于集成电路的输出驱动电路
    • US20090289668A1
    • 2009-11-26
    • US12153792
    • 2008-05-23
    • Alberto BaldisserottoSteven BroomeJason ThurstonCarl Thomas Gray
    • Alberto BaldisserottoSteven BroomeJason ThurstonCarl Thomas Gray
    • H03K3/00
    • H03K19/018528H03K19/09432
    • An integrated circuit 2 is provided with an output driver circuit 12. The output driver circuit 12 one side provides between a first power supply 20 and a second power supply 18 a first transistor 16, a first output 22, a first resistor 14 and, connected in parallel with the first resistor 14, a first bypass transistor 24. The first bypass transistor 24 is controlled by a first bypass control voltage vbp such that as the first output voltage of the first output 22 approaches the second power supply voltage of the second power supply 18, the first bypass transistor 24 serves to bypass the first resistor 14 and provide a single-ended impedance of the output driver circuit 12 which approximates to zero. On the complementary side of the output driver circuit 12 there are similarly provided a second transistor 28, a second resistor 26 and a bypass transistor 32.
    • 集成电路2设置有输出驱动器电路12.输出驱动器电路12一侧提供第一电源20和第二电源18之间的第一晶体管16,第一输出22,第一电阻14和连接 与第一电阻器14并联,第一旁路晶体管24.第一旁路晶体管24由第一旁路控制电压vbp控制,使得当第一输出端22的第一输出电压接近第二电源的第二电源电压时 电源18,第一旁路晶体管24用于旁路第一电阻器14,并提供近似为零的输出驱动器电路12的单端阻抗。 在输出驱动器电路12的互补侧,类似地提供第二晶体管28,第二电阻26和旁路晶体管32。