Design of bandgap reference voltage based on auto environment
YU Wen-yong · International Electronic Elements · 2008
Comparing conventional bandgap reference voltage with operation amplifier and improvement circuit with curvature-compensated technology,a new circuit for auto electric is designed in this paper.It is fabricated in 2 μm 40V bipolar technology.The design considers all kinds of factor for auto adequately and avoids complicated structure and offset from OPA.So it can reduce cost and improve the capability.The circuit structure can be simplified to make integration and the simulation results with Cadence Spectre show that temperature characteristic is good,anti-interference capability is strong;and power supply rejection ration(PSRR) is high.