CPC G05F 3/30 (2013.01) | 20 Claims |
1. A method comprising: determining a first error between a bandgap reference output voltage of a bandgap reference circuit at a first temperature and a target voltage; measuring a second temperature of the bandgap reference circuit; predicting the bandgap reference output voltage of the bandgap reference circuit at the second temperature and based on the first error; determining a second error between the predicted bandgap reference output voltage and the target voltage; determining a trim parameter of the bandgap reference circuit based on the second error; and setting the bandgap reference circuit with the trim parameter, wherein a third error between the bandgap reference output voltage of the bandgap reference with the trim parameter is less than the second error.
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