CPC G05F 3/225 (2013.01) [G05F 3/30 (2013.01)] | 20 Claims |
1. A bandgap reference circuit comprising:
a reference voltage generating circuit configured to
generate a proportional to absolute temperature (PTAT) voltage and a complementary to absolute temperature (CTAT) voltage, the CTAT voltage having a different temperature characteristic from the PTAT voltage, and
generate a reference voltage at an output node based on the PTAT voltage, the CTAT voltage, and a compensation voltage; and
a compensation circuit configured to
generate a CTAT current based on the CTAT voltage, the CTAT current having a different temperature characteristic from the PTAT voltage, and
determine the compensation voltage based on the CTAT current.
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