论文信息 - A Vt independent voltage reference based on composite transistors operating in weak inversion

A Vt independent voltage reference based on composite transistors operating in weak inversion

This paper describes a voltage reference circuit based on composite transistors and operating in weak inversion mode. The voltage reference was fixed in 100mV and the supply voltage can be as low as 0.8V. The weak inversion allows small current too leading the total power in the nW range. Simulation results points to a deviation (3σ and process corner) less than ±1%. The reference is indicated to be used in biomedical applications specially those that use implanted devices. In these cases the temperature impact is minimized since the human body has an effective biological system to keep it constant at about 37°C.

T. C. Pimenta | P. C. Crepaldi | R. L. Moreno | L. B. Zoccal | L. H. de C. Ferreira

[1] Robson L. Moreno,et al. An Ultra-Low-Voltage Ultra-Low-Power Weak Inversion Composite MOS Transistor: Concept and Applications , 2008, IEICE Trans. Electron..

[2] Y. Tsividis. Operation and modeling of the MOS transistor , 1987 .

[3] Paulo Crepaldi,et al. A CMOS Linear power supply for a Wireless Biomedical Sensor , 2010, 2010 IEEE International Workshop on Medical Measurements and Applications.

[4] Paulo Cesar Crepaldi,et al. A linear voltage regulator for an implantable device monitoring system , 2010 .

[5] Evangeline F. Y. Young,et al. Simultaneous Handling of Symmetry, Common Centroid, and General Placement Constraints , 2011, IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems.