摘要
设计了一种应用于低压差线性稳压器(LDO)的低功耗带隙基准电压源电路。一方面,通过将电路中运放的输入对管偏置在亚阈值区,大大降低了运放的功耗;另一方面,采用零功耗的启动电路,进一步降低了整体电路的功耗。该基准电压源采用旺宏0.35μm CMOS工艺流片,经测试,基准输出电压的温度系数为33 ppm/℃,总电流消耗仅为12μA。
A low power bandgap voltage reference circuit for Low Dropout Regulator(LDO) is proposed. The power consumption is effectively decreased by setting the differential input pair of the amplifier into sub-threshold region and by using a zero power start-up circuit. The bandgap voltage reference circuit is implemented by MIXIC’s 0.35μm CMOS process. The results indicate that the temperature coefficient of the output voltage is 33ppm/℃, and the total current consumption is 12μA only.
出处
《太赫兹科学与电子信息学报》
2014年第5期767-770,共4页
Journal of Terahertz Science and Electronic Information Technology
基金
国家自然科学基金资助项目(61274043)
国家自然科学基金重点资助项目(61233010)
湖南省自然科学基金资助项目(12JJ4064)