BANDGAP REFERENCE VOLTAGE CIRCUIT AND ELECTRONIC APPARATUS THEREOF
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United States of America Patent
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Issued Date -
Feb 19, 2015
app pub date -
Dec 18, 2013
filing date -
Aug 14, 2013
priority date (Note) -
Abandoned
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Abstract
A bandgap reference voltage circuit comprises a current mirror unit, an operation amplifier (OP), a first resistor, a second resistor, an auxiliary unit, and a voltage generation circuit. An output end of the OP is coupled to a feedback end of the current mirror unit. An end of the first resistor and an end of the second resistor are coupled to a positive input end of the OP. Another end of the first resistor is coupled to a second end of the current mirror unit. A second end of the voltage generation circuit is coupled to another end of the second resistor. An end of the auxiliary unit is coupled to a negative input end of the OP and a first end of the voltage generation circuit, and another end of the auxiliary unit is coupled to the first end of the current mirror unit.
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