Reference voltage generating circuit and reference voltage source
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United States of America Patent
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Jul 15, 2014
Grant Date -
Sep 19, 2013
app pub date -
Feb 27, 2013
filing date -
May 20, 2011
priority date (Note) -
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Abstract
A reference voltage generating circuit includes: a reference voltage generating circuit element including a first diode characteristic element and a second diode characteristic element, a density of a current flowing through the second diode characteristic element being different from a density of a current flowing through the first diode characteristic element, the reference voltage generating circuit element being configured to output a reference voltage generated based on a difference between voltages respectively applied to the first diode characteristic element and the second diode characteristic element; a first adjusting circuit element configured to adjust a first-order temperature coefficient of the reference voltage; and a second adjusting circuit element configured to adjust a second-order temperature coefficient of the reference voltage.
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