Abstract:A novel high precision high order curvature-compensated bandgap reference (BGR) is presented in this paper designed using the subthreshold current of self-cascode transistors in standard digital 0.18 μm CMOS process. Simultaneously its temperature coefficient is typically 4.6 ppm/ • C in the temperature range of −25 to 120 • C with a supply current of 17.25 μA. A power supply rejection ratio (PSRR) of −51 dB is achieved while the layout area is no more than 0.0022 mm 2 . Keywords: CMOS, voltage reference, subthreshold, high-order curvature -compensation, high PSRR, self-cascode transistor Classification: Integrated circuits Chen, X. Ming, and B. Zhang, "A 1.6 V 25-μA 5-ppm/ • C Curvature-
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