A simple curvature-compensated technique for CMOS bandgap voltage reference

[摘要] References(4)A simple high-order curvature-compensated technique for CMOS bandgap voltage reference (BVR) is presented and its advantage over the conventional ones is that this technique needs no extra circuitry for curvature compensation. The experimental prototype circuit is fabricated in CSMC 0.18µm CMOS process and occupies an area of 0.053mm2. A temperature coefficient (TC) of 10.1ppm/°C is achieved with temperature ranging from -40°C to 120°C under 3V power supply. The line regulation of the output reference is only 0.85mV/V.

[学科分类] 电子、光学、磁材料

[关键词] bandgap voltage reference;nonlinear compensation;temperature coefficient;mismatch current