A low temperature coefficient 4th-order curvature-compensated CMOS bandgap reference

Tan Xiaoyun,Liang Chen,Shi Min,Wang Guanshi

2011 Academic International Symposium on Optoelectronics and Microelectronics Technology, AISOMT 2011（2011）

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摘要

The bandgap reference voltage source can provides a steady reference voltage when ambient temperature fluctuates. Based on the principle of curvature-compensated bandgap reference widely utilized at present, this paper analyzes the coefficients of high-order items of the voltage-temperature function expanded in Taylor series. And a low temperature coefficient (1.27ppm/°C) 4th-order curvature-compensated CMOS bandgap reference voltage source operated at -40°C ∼ 100°C, is proposed in this paper. The circuit is designed in 0.5um CMOS technology and operating at 5V supply. © 2011 IEEE.

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关键词

bandgap reference,high-order curvature-compensated,low temperature coefficient,cmos integrated circuits,integrated circuit design,taylor series,ambient temperature,low power electronics,cmos technology,resistance,series mathematics,photonic band gap

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