A Novel Exponential Curvature-Compensated Bandgap Reference
Bonan Zhang, IC Design · 2006
A novel exponential curvature-compensated bandgap reference circuit is presented.The structure of the circuit is very simple and practical.Only two more diodes and one more bipolar transistor are used to compensate the higher-order items of V_(BE).The temperature coefficient of the bandgap voltage reference with first-order compensation is 22.8 ppm/℃ over the commercial temperature range(0-70 ℃).However,with the proposed exponential curvaturecompensation structure,the bandgap reference has a temperature coefficient of 7.8 ppm/℃.