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    • 1. 发明授权
    • High precision power-on-reset circuit with an adjustable trigger level
    • 具有可调触发电平的高精度上电复位电路
    • US07847606B2
    • 2010-12-07
    • US12413193
    • 2009-03-27
    • Ingo HehemannKwet ChaiMichael Wendt
    • Ingo HehemannKwet ChaiMichael Wendt
    • H03L7/00
    • H03K17/223
    • An electronic device comprising circuitry for providing a Power-on-Reset (POR) signal as a function of a supply voltage level of the circuitry. The circuitry comprises a Vbe-cell or a Vgs-cell comprising a first current path including a first transistor and a second current path including a second transistor. Each transistor has a control terminal for controlling a first current in the first current path and a second current in the second current path, wherein a control voltage level is commonly applied to the control terminals of the first and the second transistor. The control voltage level is derived from the current supply voltage level of the circuitry, and the circuitry further comprises a POR output node for providing a POR output signal, which changes from a first state to a second state in response to the ratio of the magnitudes of the first current and the second current.
    • 一种电子设备,包括用于提供作为电路的电源电压电平的函数的上电复位(POR)信号的电路。 电路包括Vbe单元或Vgs单元,其包括包括第一晶体管的第一电流路径和包括第二晶体管的第二电流路径。 每个晶体管具有用于控制第一电流路径中的第一电流和第二电流路径中的第二电流的控制端子,其中通常将控制电压电平施加到第一和第二晶体管的控制端子。 控制电压电平由电路的当前电源电压电平得出,并且电路还包括用于提供POR输出信号的POR输出节点,POR输出信号响应于第一状态与第二状态的比值而从第一状态改变到第二状态 的第一个当前和第二个电流。
    • 2. 发明申请
    • HIGH PRECISION POWER-ON-RESET CIRCUIT WITH AN ADJUSTABLE TRIGGER LEVEL
    • 具有可调节触发电平的高精度上电复位电路
    • US20090267682A1
    • 2009-10-29
    • US12413193
    • 2009-03-27
    • Ingo HehemannKwet ChaiMichael Wendt
    • Ingo HehemannKwet ChaiMichael Wendt
    • G11C5/14
    • H03K17/223
    • An electronic device comprising circuitry for providing a Power-on-Reset (POR) signal as a function of a supply voltage level of the circuitry. The circuitry comprises a Vbe-cell or a Vgs-cell comprising a first current path including a first transistor and a second current path including a second transistor. Each transistor has a control terminal for controlling a first current in the first current path and a second current in the second current path, wherein a control voltage level is commonly applied to the control terminals of the first and the second transistor. The control voltage level is derived from the current supply voltage level of the circuitry, and the circuitry further comprises a POR output node for providing a POR output signal, which changes from a first state to a second state in response to the ratio of the magnitudes of the first current and the second current.
    • 一种电子设备,包括用于提供作为电路的电源电压电平的函数的上电复位(POR)信号的电路。 电路包括Vbe单元或Vgs单元,其包括包括第一晶体管的第一电流路径和包括第二晶体管的第二电流路径。 每个晶体管具有用于控制第一电流路径中的第一电流和第二电流路径中的第二电流的控制端子,其中通常将控制电压电平施加到第一和第二晶体管的控制端子。 控制电压电平由电路的当前电源电压电平得出,并且电路还包括用于提供POR输出信号的POR输出节点,POR输出信号响应于第一状态与第二状态的比值而从第一状态改变到第二状态 的第一个当前和第二个电流。