传感技术学报Issue(1)：58-63,6.DOI:10.3969/j.issn.1004-1699.2014.01.011
高精度、低功耗带隙基准源及其电流源设计
Design of High Precision Bandgap Reference and Current Reference with Low Power Consumption
摘要
Abstract
A high precision BiCMOS voltage and current reference for infrared focal plane array sensor are presented,which have advantages over traditional Brokaw bandgap reference in terms of Early effect reduction and biasing current matching for current mirror. The proposed circuit still allows the voltage reference to operate with an attractive low output resistance and utilizes cascode biasing current source to enhance PSR performance. And then, the high precision and simplified current reference is obtained by clamping reference voltage equal to the voltage across the resistance. Also,one diode-connected is introduced to further simply the whole circuit. The system has been simulated using Cadence Spectre tool in CSMC 0. 5 μm BiCMOS technology. The results indicate that the voltage reference achieves temperature coefficient of 13×10-6/℃ from-40℃ to 125℃ with 5V supply voltage and high PSR of -86. 83 dB at 100 Hz. Moreover,the current reference generates 4 μA with a variation of 0. 5% over the same temperature range,equivalent to 31 ×10-6/℃. This reference source has high PSR,high precision and low temperature coefficient which solves the problem of low precision in constant transconductance reference source and are more suitable for infrared focal plane array.关键词
带隙基准源/电流源/源极跟随器/高精度/BiCMOS工艺Key words
bandgap reference/current source/source follower/high precision/BiCMOS process分类
信息技术与安全科学引用本文复制引用
杨宁,史仪凯,袁小庆,庞明..高精度、低功耗带隙基准源及其电流源设计[J].传感技术学报,2014,(1):58-63,6.基金项目
国家自然科学基金项目(51105316,50275125) （51105316,50275125）
西北工业大学基础研究基金项目(NPU-FFR-JCY20130118) （NPU-FFR-JCY20130118）
