Design of cmos voltage reference circuit

Abstract

This paper presents a CMOS voltage reference design, which is widely used in electronic circuits, both analog and digital circuits. In the conventional, a CMOS voltage reference circuit design composed of several MOS transistors and complicated circuits, the output voltage cannot be adjusted to any levels. Therefore, in this paper proposed the CMOS voltage reference circuit design technique based on a new current combination circuit, which it was reduced number of MOS transistors and the proposed circuit is able to operate without complex startup circuit. The performance of the proposed circuit is confirmed through PSPICE simulation results, the circuit can be operated with supply voltage varies from 2V to 4V, the output voltage reference is about 231 2mV at wide temperature range of -80 to 120 , it has very low temperature coefficient of about 37.65 ppm/ and a total power dissipation of 7.37 W