IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
A 2.2ppm/°C compensated bandgap voltage reference with a double-ended current trimming technique
Wenxin YuLenian HeJianxiong XiQuan SunChangyou Men
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JOURNAL FREE ACCESS

2022 Volume 19 Issue 21 Pages 20220390

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Abstract

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.

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© 2022 by The Institute of Electronics, Information and Communication Engineers
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