Title :
A novel piecewise curvature-corrected CMOS bandgap reference
Author :
Li Jing-hu ; Sheng, Wang Yong ; Yan, Yu Ming ; Zheng, Ye Yi
Author_Institution :
Micro Electron. Center, Harbin Inst. of Technol., Harbin
Abstract :
A novel and simple piecewise curvature-corrected bandgap voltage reference (BGR) is proposed. It features in employing temperature-dependent resistor ratio to get a piecewise corrected current, which corrects the nonlinear temperature dependence of the first-order BGR. The piecewise corrected current generator forms a negative feedback to improve the line regulation and power supply rejection (PSR) of the proposed BGR. Simulation result shows the temperature coefficient (TC) of 5ppm/K in the industry temperature range (223-398K) and PSR of -82dB are achieved at 2.6-V supply voltage. The simulated line regulation is 0.6mV/V in the supply range of 2.6V-5.6V. It is designed in SMIC 0.35-mum 5-V n-well digital CMOS process.
Keywords :
CMOS integrated circuits; circuit feedback; reference circuits; n-well digital CMOS process; negative feedback; piecewise corrected current; piecewise curvature-corrected bandgap voltage reference; power supply rejection; simulated line regulation; temperature 223 K to 398 K; temperature coefficient; voltage 2.6 V to 5.6 V; CMOS process; Electricity supply industry; Negative feedback; Photonic band gap; Power generation; Power supplies; Resistors; Temperature dependence; Temperature distribution; Voltage;
Conference_Titel :
Devices, Circuits and Systems, 2008. ICCDCS 2008. 7th International Caribbean Conference on
Conference_Location :
Cancun
Print_ISBN :
978-1-4244-1956-2
Electronic_ISBN :
978-1-4244-1957-9
DOI :
10.1109/ICCDCS.2008.4542606
