Abstract: A novel exponential curvature-compensated BICMOS (Bipolar Complementary Metel-Oxide-Semiconductor) bandgap reference is proposed;which has a character of low power, low temperature coefficient, high power supply rejection ratio (PSRR) ;basing on analysis of exponential curvature-compensation bandgap reference technique.The reference circuit is designed, simulated and realized by 0.6μm BICMOS process.The simulation results show that the reference has a 50μA supply current;and temperature coefficient (TC) of 2ppm/℃ from-40℃ to 110℃;and-105dB PSSR at low frequency;and 0.6mV load regulation.