电子元件与材料2024，Vol.43Issue(7)：878-883,6.DOI:10.14106/j.cnki.1001-2028.2024.1596
一种新型带曲率补偿的带隙基准
A novel bandgap reference with curvature compensation
李新 1高梦真 1杨森林1
作者信息
- 1. 沈阳工业大学信息科学与工程学院,辽宁沈阳 110870
- 折叠
摘要
Abstract
To address the significant temperature drift and low power supply rejection ratio of conventional bandgap references,a novel bandgap reference voltage source was proposed with band curvature compensation.Both base current and curvature compensation techniques were used to improve the traditional bandgap reference structure.The design includes a low-mismatch improvement circuit,low-temperature drift enhancement,and start-up circuitry.The bandgap reference output voltage was ensured by using cascode current mirror technique and negative feedback network,greatly reducing the effect of operational amplifier offset voltage on the bandgap reference voltage and achieving low-temperature drift characteristics.Utilizing the 0.18 µm BCD process at Eastern Hi-Tech,simulations were conducted using Cadence Spectre software.Simulation demonstrates that the output voltage can be stabilized at 1.192 V from-40 ℃ to 150 ℃ at an input voltage of 5 V.The measured temperature coefficient is 4.84×10-6/℃,and the power-supply rejection ratio is-78 dB at low frequencies.关键词
带隙基准/基极电流补偿/曲率补偿/低温度系数/电源抑制比Key words
bandgap reference/base current compensation/curvature compensation/low temperature coefficient/power-supply rejection ratio分类
信息技术与安全科学引用本文复制引用
李新,高梦真,杨森林..一种新型带曲率补偿的带隙基准[J].电子元件与材料,2024,43(7):878-883,6.
