Method for BGR’s second-order temperature compensation using resistor combinations with specified temperature coefficients

IEICE Electronics Express

Yanzhao Ma¹  Ran Zheng¹  Lifu Dai¹ 

[1] School of Computer Science and Technology, Northwestern Polytechnical University

关键词: bandgap reference;    high-order compensation;    temperature coefficient;    resistors;   

DOI  :  10.1587/elex.14.20170920

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

In this paper, an original method is proposed to implement temperature compensation for a bandgap reference (BGR) circuit without any auxiliary circuits. By employing resistor combinations (formed by different type of resistors) with specified temperature coefficients (TC), the temperature coefficient of a previous reported bandgap reference is improved from 22.11 ppm/°C to 3.499 ppm/°C (−25°C–85°C). In order to accomplish the improvement, a useful model is also proposed to help understand the relationship among the TCs of resistors’ combinations and BGR.

【 授权许可】

CC BY