Abstract
Abstract
In this paper, a segment-compensated low-temperature-drift bandgap reference generator is proposed and designed to get the high-order nonlinear temperature characteristics for the bandgap reference circuit. Based on the Nuvoton 0.35 μm BCD process, the circuit is simulated and analyzed. The result is that a temperature coefficient of 1.12 ppm/℃ over the range of -40℃ to 125℃ is obtained, which is much lower than the 6.88 ppm/℃ before compensation. It is demonstrated that the power supply rejection ratio is 141.3 dB at 1, 000 HZ, low-frequency open-loop gain is 75 dB, and a phase margin is 57°.
Reference10 articles.
1. Design of folded cascode op amp and its application-bandgap reference circuit [J];Roohie;Circuit World,2024
2. A high PSR and high-precision current-mode bandgap reference with gm boost self-regulated structure [J];Zhi;Microelectronics Journal,2023
3. Design of a High PSRR Low-pressure Bandgap Reference Source with Curvature Compensation [J];Junchao;Journal of Physics: Conference Series,2023
4. 1.8 V 0.918 ppm/°C CMOS bandgap voltage reference with curvature-compensated [J];Pan;IEICE Electronics Express,2019
5. A sub-1 V 78-nA bandgap reference with curvature compensation [J];Luo;Microelectronics Journal,2017