University of Electronic Science and Technology of China

Anqi Wang

Bo Zhang

Zhuo Wang

Zekun Zhou

Jianwen Cao

Yunkun Wang

Hongming Yu

A resistorless CMOS low power voltage reference circuit is provided. The start-up circuit is used to prevent the circuit to stay in the zero state and stop working when the circuit gets out of the zero state. The self-biased Vgenerating circuit generate the voltage Vwhich has positive temperature coefficient. The square-law current generating circuit generates a square-law current which is proportional to &#x3bc;Tthrough the V. Finally, the reference voltage Vis obtained by introducing the square-law current into the reference voltage output circuit. The reference voltage Vof this application can realize approximative zero temperature coefficient in the temperature range of &#x2212;40&#xb0; C.100&#xb0; C. This application improves temperature characteristic which may be poorer due to temperature nonlinearity of carrier mobility based on the traditional subthreshold reference. This application can reduce the power consumption from &#x3bc;W level to nW level and realize low power consumption.

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Chengdu, China

Anqi Wang