A Design Approach for Bandgap Reference Circuit

Abstract

The paper presents a systematic approach of designing a bandgap reference circuit using 2-stage operational amplifier. The circuit is designed using 0.18 µm CMOS process. In simulation we achieve a reference of 789 mV with a coefficient of temperature 71.69 ppm/ºC for the temperature range 104°C at 1.8 V supply voltage. The reference voltage circuit consumed 60.82 µW of power. The layout with DRC and LVS check of the BGR core was completed. The overall area of the designed BGR circuit is 0.027 mm2.