Title :
Design of a 1.5-V high-order curvature-compensated CMOS bandgap reference
Author :
Leung, Chi Yat ; Leung, Ka Nang ; Mok, Philip K T
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China
Abstract :
A low-voltage low-noise high-order curvature-compensated CMOS bandgap reference is proposed in this paper. Two resistor strings are added to the bandgap circuit to reduce the supply voltage. In addition, a temperature-dependent resistor ratio generated by a high-resistive poly resistor is used to provide the high-order compensation. The proposed bandgap voltage reference can operate down to a 1.5V supply (where Vth = 0.9V at 0°C) with a temperature coefficient of less than 15.2ppm/°C and an average line regulation of 5.5mV/V.
Keywords :
CMOS integrated circuits; energy gap; low-power electronics; reference circuits; resistors; voltage regulators; 0 C; 0.9 V; 1.5 V; bandgap circuit; bandgap voltage reference; curvature-compensated CMOS bandgap reference; high-order CMOS bandgap reference; high-order compensation; high-resistive poly resistor; line regulation; low-noise CMOS bandgap reference; low-voltage CMOS bandgap reference; resistor strings; supply voltage reduction; temperature-dependent resistor ratio; CMOS technology; Circuit noise; Councils; MOS devices; Photonic band gap; Piecewise linear techniques; Radio frequency; Resistors; Temperature dependence; Voltage;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1328128
