Power supply voltage detection circuit, semiconductor apparatus and electronic device
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United States of America Patent
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Jul 14, 2020
Grant Date -
Aug 29, 2019
app pub date -
Feb 26, 2019
filing date -
Feb 27, 2018
priority date (Note) -
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Abstract
Provided is a power supply voltage detection circuit that prevents offsetting from occurring due to different voltages being applied for an extended period of time to gates of two transistors that constitute a differential pair in a comparator circuit that compares a comparison voltage that is generated based on a power supply voltage to a reference voltage. This power supply voltage detection circuit has a reference voltage generation circuit, a comparison voltage generation circuit, and a comparator circuit that includes a first transistor and a second transistor that constitute a differential pair and each have a gate to which a same bias voltage is applied, and a third transistor and a fourth transistor that are respectively connected in series to the first and second transistors and have sources to which the reference voltage and the comparison voltage are respectively applied.
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