A 1 V, 26 /spl mu/W extended temperature range band-gap reference in 130-nm CMOS technology

Abstract

This paper presents a fully CMOS band-gap reference for extended temperature range (from -50 /spl deg/C to 160 /spl deg/C) applications. The proposed solution provides an output voltage of 798 mV with a power supply as low as 1 V. The measured output voltage variations as a function of temperature (-50 /spl deg/C to 160 /spl deg/C) and power supply (1 V to 2 V) are 6.64 ppm//spl deg/C and 248 ppm/V, respectively. High accuracy is achieved by minimizing the operational amplifier offset. Power consumption is approximately equal to 26 /spl mu/W (supply voltage = 1 V). Silicon area is 0.02 mm/sup 2/.