电子学报2025，Vol.53Issue(6)：1865-1873,9.DOI:10.12263/DZXB.20250159
应用于高精度ADC的低失调低噪声高精度基准电压源
Low-Voltage,Low-Noise,High-Precision Bandgap Reference for High-Resolution ADC
摘要
Abstract
A low-offset,low-noise,high-precision bandgap reference(BGR)chip for high-resolution analog-to-digi-tal converters(ADC)is designed in this paper.In response to the limitations of traditional architectures,two new technolo-gies are proposed.Firstly,feedback enhancement technology reduces the operational amplifier's offset voltage and low-fre-quency noise to 1/23 when equivalent to the reference output.Secondly,a high-precision base current compensation tech-nique is proposed to reduce the reference output deviation under various corners and device mismatch.Implemented in 0.18 μm CMOS process,the proposed BGR occupies a chip area of 0.142×0.258 mm2.Measurement results demonstrate that the BGR generates a 0.6 V reference voltage under a 1.2 V power supply,consuming 31 μA quiescent current.The cir-cuit achieves an integrated noise of 2.79 μVrms over 0.1～10.0 Hz and exhibits a temperature coefficient of 3.6 ppm/℃ in the range of-40～125℃.关键词
低失调/低噪声/高精度/带隙基准/反馈提升技术/高精度基极电流补偿Key words
low-offset/low-noise/high-precision/bandgap reference/feedback enhancement/high-precision base current compensation分类
信息技术与安全科学引用本文复制引用
刘帘曦,仵少飞,王格夫,戴宇轩,王钰源,朱樟明,廖栩锋..应用于高精度ADC的低失调低噪声高精度基准电压源[J].电子学报,2025,53(6):1865-1873,9.基金项目
国家自然科学基金(No.62131010,No.62204183,No.62222406) （No.62131010,No.62204183,No.62222406）
中央高校基本科研业务费专项资金(No.YJSJ25013) National Natural Science Foundation of China(No.62131010,No.62204183,No.62222406) （No.YJSJ25013）
Fundamental Research Funds for the Central Universities(No.YJSJ25013) （No.YJSJ25013）
