Detection circuit, sensor device and electronic apparatus
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United States of America Patent
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Jun 9, 2015
Grant Date -
Oct 24, 2013
app pub date -
Mar 21, 2013
filing date -
Apr 19, 2012
priority date (Note) -
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Abstract
Detection circuits include a pyroelectric element, source follower circuits that include transistors TN, TP1 in which a detection signal SD from the pyroelectric element is inputted to a gate, first switching elements that interrupt an electric current that flows in the transistors, and a second switching element that interrupts between the pyroelectric element and the gate of the transistor. The second switching element can interrupts a connection between the pyroelectric element and the gate of the transistor before the first switching elements interrupt the electric current that flows in the transistors TN, TP1.
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