A 2.2ppm/°C compensated bandgap voltage reference with a double-ended current trimming technique

IEICE Electronics Express

article

Wenxin Yu¹  Lenian He¹  Jianxiong Xi¹  Quan Sun²  Changyou Men² 

[1] Institute of VLSI Design, Zhejiang University;HangZhou Vango Technologies, Inc.

关键词: bandgap reference;    temperature coefficient;    current trimming;    high-order curvature compensation;   

DOI  :  10.1587/elex.19.20220390

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

This paper presents a high-precision bandgap voltage reference (BGR) with a double-ended current trimming technique. A high-order curvature compensation method is adopted to compensate for the nonlinearity of VBE. The proposed trimming technique using the one-time programmable (OTP) programming cancels the errors caused by process variation and enables bulk production, which achieves a best TC of 2.2ppm/°C from -40°C to 125°C. The proposed BGR is fabricated in a 0.18-um BCD process with an active area of 0.329mm2. The line sensitivity is 0.18%/V operating from 2.9V to 3.6V.

【 授权许可】

CC BY