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热词
    • 5. 发明授权
    • Comparator circuit
    • 比较器电路
    • US4456840A
    • 1984-06-26
    • US329947
    • 1981-12-11
    • Tetsuo IdeHiromu Iwamoto
    • Tetsuo IdeHiromu Iwamoto
    • G01R19/165H03K3/023H03K3/0233H03K5/08H03K5/22
    • H03K3/02337H03K3/023
    • A comparator circuit providing a hysteresis characteristic which does not change a hysteresis width even if a power supply voltage changes is disclosed. The comparator circuit comprises a differential amplifier including an input terminal, a reference terminal and an output terminal; an input voltage terminal to which an input voltage is applied; a reference voltage terminal to which a reference voltage is applied; at least one level shift means connected between said input voltage terminal and said input terminal, or between said reference voltage terminal and said reference terminal; a current source means connected to the output of said level shift means; and control means for controlling the current value of said current source means in accordance with the output level of said output terminal.
    • 提供即使电源电压变化也不改变滞后宽度的滞后特性的比较器电路。 比较器电路包括:差分放大器,包括输入端子,参考端子和输出端子; 施加输入电压的输入电压端子; 施加基准电压的参考电压端子; 连接在所述输入电压端子和所述输入端子之间或所述参考电压端子与所述参考端子之间的至少一个电平移动装置; 连接到所述电平移位装置的输出的电流源装置; 以及控制装置,用于根据所述输出端子的输出电平来控制所述电流源装置的电流值。