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公开(公告)号:US4659944A
公开(公告)日:1987-04-21
申请号:US720789
申请日:1985-04-08
IPC分类号: H03K17/30 , H03K17/687 , H03K5/153
CPC分类号: H03K17/6872 , H03K17/302
摘要: A voltage detecting circuit is provided for generating an output signal when an input signal exceeds the power supply voltage by a predetermined amount. A reference current is established by an output stage using a first current mirror. A second current mirror is connected to the output stage and detects the input voltage level by forcing a greater or lesser amount of current through the output stage to provide a high or low level output voltage.
摘要翻译: 提供电压检测电路,用于当输入信号超过电源电压预定量时产生输出信号。 通过使用第一电流镜的输出级建立参考电流。 第二电流镜连接到输出级,并且通过迫使输出级中的或多或少的电流来提供高电平或低电平的输出电压来检测输入电压电平。