Curvature-compensated CMOS bandgap circuit with 1 V reference voltage

This paper presents a curvature-compensated bandgap circuit processed in a double- metal 0.8 /spl mu/m CMOS technology. The circuit has a reference voltage of 1 V, and it operates with supply voltages higher than 1.6 V, consuming 8 /spl mu/A at room temperature. An ultimate simple technique is used for curvature compensation. The temperature coefficient is 10 ppm/K, and the power supply rejection ratio is 66 dB. The circuit can be used in LDOs, reset controllers and other low-voltage analog and mixed signals ICs.