A CMOS bandgap voltage reference with current-control circuits for the extended operating temperature range

A CMOS bandgap voltage reference (BGR) with current-control circuits (CCC) design is proposed and simulated using Silterra 0.13μm CMOS technology. The CCCs is designed to suppress the total current at lower and higher temperatures. The proposed BGR utilizes curvature-corrected current generators that compensate the output voltage variation in the extended temperature range. The proposed circuit generates an output voltage of 1.1833V with a variation of 329μV within the temperature range of −50°C to 125°C. With a 2.5 V supply voltage, the BGR circuit was verified able to save power consumption by 12.6% compared with a circuit without the CCC.