Title :
A 2-V 23-μA 5.3-ppm/°C 4th-order curvature-compensated CMOS bandgap reference
Author :
Leung, Ka Nang ; Mok, Philip K T ; Leung, Chi Yat
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China
Abstract :
A 4th-order curvature-compensated CMOS bandgap reference, which uses a high-resistive poly resistor to a generate temperature dependent resistor ratio, is proposed. The proposed reference can operate down to a 2-V supply and consumes a maximum supply current of 23 μA. A temperature coefficient of 5.3 ppm/°C and a line regulation of ±1.25 mV/V are achieved at 2-V supply. The improvement on temperature coefficient is about 5 times reduction compared to the conventional approach.
Keywords :
CMOS analogue integrated circuits; compensation; reference circuits; 2 V; 23 muA; 4th-order bandgap reference; CMOS bandgap reference; curvature-compensated bandgap reference; high-resistive poly resistor; temperature coefficient; temperature dependent resistor ratio; CMOS process; CMOS technology; Councils; Equations; Photonic band gap; Power supplies; Resistors; Temperature dependence; Thin film circuits; Voltage;
Conference_Titel :
Custom Integrated Circuits Conference, 2002. Proceedings of the IEEE 2002
Print_ISBN :
0-7803-7250-6
DOI :
10.1109/CICC.2002.1012875
