A high-PSRR higher order curvature-compensated bandgap reference circuit with reference to

The present invention provides a high power supply rejection ratio higher order curvature-compensated bandgap reference of the reference circuit comprises a starting circuit, before the regulator circuit, a bandgap reference circuit, a low temperature region piecewise linear temperature compensating circuit, the high-temperature region T1 and the absolute temperature .5 proportional to the temperature compensation circuit, the high-temperature region piecewise linear temperature compensation circuit. The present invention is by piecewise linear low-temperature region and high temperature region of the temperature compensated current T1.5 proportional to absolute temperature current addition of a conventional temperature compensated bandgap reference circuit the reference, and the high-temperature-area circuit pumped from a conventional bandgap reference Reference segment linear temperature compensation current, higher order curvature compensation to obtain a reference voltage; negative feedback technology was added before adjusting the reference voltage to the high order curvature compensation, resulting in high power supply rejection ratio higher order curvature-compensated bandgap reference circuit reference .