A 3.9ppm/°C curvature-corrected bandgap voltage reference

This paper presents a curvature-corrected bandgap voltage reference (BGR). The proposed design utilizes from a combination of one resistor and one PMOS to produce three different temperature behaviors. The voltage reference uses the peaking current source to prepare a temperature-independent reference voltage. It works with a supply voltage of 1.8 V and generates output voltage of 1.1353 V which exhibits a temperature coefficient of only 3.9ppm/°C in the temperature ranges from -40°C to 50°C. The simulation is fully done with 0.18μm CMOS technology. The ultra low output voltage variations of the designed BGR gains to use it in high-precision applications.