现代电子技术Issue(19)：143-146,4.
一种利用门电路实现可靠启动的基准电流源
Reliable startup of bandgap reference current source by using gate circuit
摘要
Abstract
A reliable and fast startup circuit of CMOS bandgap reference(BGR)current source,which is realized by a digi-tal gate circuit,is proposed to solve this problem of potential fail to start up BGR circuit with current sum mode to the correct working state and make BGR less power,less complicate and higher stability. Spectre simulation shows BGR circuit can output 20 uA reference current with temperature coefficient of 11.9 ppm and linearity of 1 054 ppm/V at 1.8 V supply voltage. What′s more,the output noise voltage is 0.1 mV and PSRR is -42 dB. With TSMC0.18um CMOS process,the measured results indi-cate that BGR circuit can reliably start up in 15.4 us,whose output reference voltage is stabilized at 1.28 V and temperature co-efficient is 89 ppm at -40~125 ℃. The bandgap reference current source has been successfully applied to the frequency synthe-sizer in the node chip in WIA for industrial automation.关键词
频率综合器/带隙基准电路/电流和模式/启动电路Key words
frequency synthesizer/bandgap reference circuit/current sum mode/startup circuit分类
信息技术与安全科学引用本文复制引用
陈华,郭桂良,罗超,刘生有,来强涛,阎跃鹏..一种利用门电路实现可靠启动的基准电流源[J].现代电子技术,2014,(19):143-146,4.基金项目
国家863重大专项资助项目 （）
