A 19-nW 0.7-V CMOS Voltage Reference With No Amplifiers and No Clock Circuits

作者：Zhuang, Haoyu^*; Zhu, Zhangming; Yang, Yintang

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2014, 61(11): 830-834.

DOI：10.1109/TCSII.2014.2345298

• Complimentary metal-oxide-semiconductor (CMOS) circuit
• low power
• low voltage
• subthreshold
• voltage reference

This brief provides a novel voltage reference circuit that uses four optimization techniques to effectively save power dissipation: 1) All the amplifiers have been eliminated, but two important voltages are still successfully equalized without using any amplifier; 2) the clock circuits are not required in the proposed design; 3) there is no need for extra biasing circuit; and 4) all the MOS transistors are in the subthreshold region to make the power supply voltage low. Moreover, a trimming circuit has been adopted to ensure the accuracy of the reference voltage. This novel voltage reference circuit has been fabricated with the Semiconductor Manufacturing International Corporation 0.18-mu m 1.8-V CMOS process. The measurement results show that the power consumption is only 19 nW, the power supply voltage is only 700 mV, the temperature coefficient is 22.11 ppm/degrees C under a temperature of -25 degrees C-+85 degrees C, and the line sensitivity is as good as 571 mu V/V.

• 出版日期2014-11
• 单位西安电子科技大学