关键词: 带隙基准, 亚阈值, 低功耗, 无运放, 温度系数

Abstract: The paper presents a non-operational amplifier bandgap reference circuit based on sub-threshold CMOS.Instead of traditional resistances,the MOSFET works in linear region and thereby greatly reduces consumption.The performance of temperature drift is improved.The circuit is manufactured in 0.35 μm CMOS process and simulated at 27℃and 3 V working voltage.The output reference voltage is 1.2086 V within a deviation of 4 mV;the current is about 1.595 μA;and the power consumption is only about 4.785 μW. And the temperature coefficient is 17.3×10-6/℃in the range of-50℃to 120℃.The bandgap voltage reference circuit is of wide temperature range,low power consumption,and small size.

Key words: bandgap reference, sub-threshold, low power consumption, non-operational amplifiers, temperature coefficient