Voltage detector for battery operated device
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United States of America Patent
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Sep 29, 1998
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N/A
app pub date -
Sep 12, 1996
filing date -
Sep 12, 1996
priority date (Note) -
Expired
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Abstract
A voltage detector is described herein which eliminates an entire operational amplifier or comparator from conventional voltage detectors. In one embodiment of such a voltage detector, a band gap reference generator is connected so as not to incorporate any feedback mechanism and where an off balance in the band gap reference generator is used to detect whether an input voltage falls below a threshold voltage. By eliminating the feedback path in the band gap reference generator, a comparator is eliminated. Other types of voltage detectors which provide a highly stable operation over a wide range of temperatures are described.
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