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    • 2. 发明授权
    • Voltage threshold detection circuit with very low power consumption
    • 电压门限检测电路功耗非常低
    • US5440263A
    • 1995-08-08
    • US53892
    • 1993-04-27
    • Richard P. FournelLaurent Sourgen
    • Richard P. FournelLaurent Sourgen
    • G01R19/165G06F1/28H03K17/22G05F1/00
    • G01R19/16519
    • A supply-voltage-monitoring circuit, for low-power integrated circuits, in which charge-sharing through a switched-capacitor chain is used to couple the supply voltage to a dynamic sensing node. The dynamic sensing node drives a half-latch, which is stable in a no-alarm condition. In this circuit, the state of the output gets switched over in the first phase if the voltage at the terminals of the capacitor at the start of this stage (this voltage being equal to a fraction of the input voltage) crosses a determined threshold. This threshold is determined as a function of technical parameters for the construction of the circuit. These technical parameters are chiefly the threshold voltage of the transistor and the characteristics of the transistors that form the locking circuit.
    • 用于低功率集成电路的电源电压监控电路,其中通过开关电容器链的电荷共享用于将电源电压耦合到动态感测节点。 动态感应节点驱动一个半锁定,在无报警状态下稳定。 在该电路中,如果在该阶段开始时电容器的端子处的电压(该电压等于输入电压的一部分)超过确定的阈值,则在第一阶段中输出的状态切换。 该阈值被确定为用于构建电路的技术参数的函数。 这些技术参数主要是晶体管的阈值电压和形成锁定电路的晶体管的特性。