A 1.2 V,9 ppm/℃ CMOS Bandgap Voltage Reference
Lu Yang · Modern Electronics Technique · 2006
Based on the analysis of conventional CMOS bandgap voltage reference,by combining the curvature compensation technique,a lowsupply CMOS bandgap voltage reference circuit,with the use of bulkdriven opamp as the feedback amplifier is proposed.The proposed circuit adopts currentmode structure and is designed in standard 0.5 μm CMOS process.The simulation is carried out under the supply voltage of 1.2 V using Hspice,the result shows that the output reference has a TC of 9 ppm/℃ through the temperature range of-40～120 ℃.