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本文所示的传感器/监控器电路消 耗的电源电流极小,以致它可以 在一个笔记本计算机或PDA装置中持续工作(见电路图)。它的作用是在检测到红外(IR)信号时“唤醒”主系统。电路的特别小的电流消耗(最大4μA,一般2.μA)主要是比较器/参考器件IC1的电流消耗。
The sensor / monitor circuit shown in this document consumes minimal supply current so that it can continue to operate in a notebook computer or PDA device (see circuit diagram). Its purpose is to “wake up” the main system when an infrared (IR) signal is detected. The circuit’s very small current consumption (up to 4μA, typically 2.μA) is mainly the comparator / reference device IC1 current consumption.