一种分段补偿辅助的高精度曲率补偿带隙基准源设计*

doi:10.16257/j.cnki.1681-1070.2026.0076

电子与封装 ›› 2026, Vol. 26 ›› Issue (6): 060302 . doi: 10.16257/j.cnki.1681-1070.2026.0076

一种分段补偿辅助的高精度曲率补偿带隙基准源设计*

王子良，赖明豪，郑博博

江西理工大学电气工程与自动化学院，江西赣州 341000

收稿日期:2025-12-21 出版日期:2026-07-02 发布日期:2026-07-02
作者简介:王子良（2002—），男，湖北黄石人，硕士研究生，主要研究方向为模拟集成电路设计和电源管理芯片设计。

Design of a High-Precision Curvature-Compensated Bandgap Reference with Auxiliary Piecewise Compensation

WANG Ziliang, LAI Minghao, ZHENG Bobo

Schoolof Electrical Engineering and Automation, Jiangxi University of Science and Technology, Ganzhou 341000, China

Received:2025-12-21 Online:2026-07-02 Published:2026-07-02

摘要/Abstract

摘要： 针对传统带隙基准源温度系数（TC）过高的问题，提出了一种集成分段补偿与曲率补偿的高精度带隙基准源设计。通过“倒V型”曲率补偿电流对带隙基准源中间温区进行补偿，同时引入辅助分段补偿电流对高/低温区进行定向补偿。为应对工艺偏差对高精度电路的影响，进一步集成了数字修调网络。提出的电路基于SMIC 0.18 μm CMOS工艺，在-40~125 ℃范围的TC低至0.882×10^-6/℃，线性调整率低于±0.09%/V，1 kHz电源抑制比（PSRR）为55 dB。版图面积为0.0173 mm²。提出的带隙基准源在保持低复杂度的同时实现了优良的性能。

关键词: 带隙基准源, 低温度系数, 分段补偿, 曲率补偿, 数字修调

Abstract: To address the issue of high temperature coefficient (TC) in traditional bandgap references, a high-precision bandgap reference integrating piecewise compensation and curvature compensation is proposed. The design employs an "inverted V-shaped" curvature compensation current to compensate the medium temperature range of the bandgap reference, while simultaneously introducing an auxiliary segmented compensation current for targeted compensation in the high/low temperature regions. To mitigate the impact of process variations on circuit precision, a digital trimming network is further integrated. The proposed circuit is implemented in SMIC 0.18-μm CMOS process, achieving an ultra-low TC of 0.882×10^-6/℃ over the temperature range from -40 ℃ to 125 ℃, with a line regulation below ±0.09%/V and a power supply rejection ratio (PSRR) of 55 dB at 1 kHz. The layout occupies an area of 0.0173 mm². The proposed bandgap reference achieves excellent performance while maintaining low complexity.

Key words: bandgap voltage reference, low temperature coefficient, piecewise compensation, curvature compensation, digital trimming

中图分类号:

TN402
TN433

王子良，赖明豪，郑博博. 一种分段补偿辅助的高精度曲率补偿带隙基准源设计*[J]. 电子与封装, 2026, 26(6): 060302 .

WANG Ziliang, LAI Minghao, ZHENG Bobo. Design of a High-Precision Curvature-Compensated Bandgap Reference with Auxiliary Piecewise Compensation[J]. Electronics & Packaging, 2026, 26(6): 060302 .

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中国电子学会电子制造与封装技术分会会刊

中国半导体行业协会封测分会会刊

无锡市集成电路学会会刊

一种分段补偿辅助的高精度曲率补偿带隙基准源设计*

Design of a High-Precision Curvature-Compensated Bandgap Reference with Auxiliary Piecewise Compensation

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