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Infra-red sensor/monitor

Infra-red sensor/monitor
The sensor/monitor shown in the diagram ‘wakes up’ the host system on detection of infra-red (IR) signals. It draws so little supply current that it can remain on continuously in a notebook computer or PDA device. Its ultra-low current drain (4 µA maximum, 2.5 µA typical) is primarily that of the comparator/reference device, IC1.
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