A Sub-1V 115nA 0.35μm CMOS Voltage Reference for Ultra Low-Power Applications

摘要：

A voltage reference circuit capable of sub-1V operation and with ultra-low power consumption is introduced in this paper.In the proposed circuit, proportional-to-absolute-temperature voltage is generated by using the series-connection of two NMOS devices working in sub-threshold region and the gate-to-source voltage of another NMOS device is adopted to realize the complementary-to-absolute-temperature voltage.Moreover, the temperature compensation is performed by using a switch capacitor circuit. The proposed circuit is implemented in chartered 0.35μm CMOS technology and occupies an active chip area of 0.021mm2.Post-layout simulation results show that it can operate with a supply voltage down to 0.9V while consuming 115nA ground current.With 1V power supply,the output voltage is 142.8mV at 25℃ and the temperature coefficient is 25.5ppm/℃.

关键词： Voltage reference Low-power low-voltage application Temperature effect Analog integrated circuit

作者: Haifeng Ma Feng Zhou

作者单位: ASIC & System State Key Lab,Fudan University,Shanghai,China

会议类型: 国际会议

会议名称: 2009 IEEE 8th International Conference on ASIC(第八届IEEE国际专用集成电路大会)

会议地点: 长沙

会议语种:英文

页码: 1074-1077

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）