CMOS High-precision CMOS bandgap reference circuit for providing low-supply-voltage

摘要

The present invention relates to a bandgap reference circuit comprising: a first bandgap reference circuit portion coupled to an NMOS transistor and a current mirror circuit; a second bandgap reference circuit portion coupled to the PMOS transistor; and a second bandgap reference circuit portion And a summing circuit unit for summing a first current induced and a second current derived from the second bandgap reference circuit unit to generate a reference voltage, wherein a voltage generated by the first bandgap reference circuit unit is a sum of the second bandgap The direction of the curvature is the same as the voltage generated by the reference circuit section and the first current is opposite in direction of the curvature to the second current so as to provide a temperature- can do.