Title :
High PSRR and high-order curvature-compensated bandgap voltage reference
Author :
Yu, Qi ; Zhang, Wan-Dong ; Chen, Hong ; Ning, Ning ; Deng, Chun-Jian
Author_Institution :
State Key Lab. of Elec. Thin Films & Integrated Devices, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Based on the principle of piecewise compensation, a new high-order curvature compensated method of bandgap reference is presented in this paper. This method focuses on forming multiple local extrema of the curve of reference voltage instead of single valley or peak in the entire operating temperature range, which improves the temperature independence significantly. It has a temperature coefficient in the -40°C to 135°C range of 0.58 ppm/°C simulated in 0.5 μm CMOS process. Adopting the error amplifier with improved PSRR, the PSRR is -95.4dB at dc and -56dB at 100KHz with 5V power supply.
Keywords :
CMOS integrated circuits; circuit simulation; compensation; integrated circuit modelling; power supply circuits; reference circuits; CMOS process; PSRR; error amplifier; frequency 100 kHz; high-order curvature-compensated bandgap voltage reference; multiple local extrema; operating temperature range; piecewise compensation principle; power supply rejection ratio; reference voltage; size 0.5 mum; temperature -40 degC to 135 degC; temperature coefficient; temperature independence; voltage 5 V; Manganese; Photonic band gap; Resistors; Temperature distribution; Temperature measurement; Transistors;
Conference_Titel :
Microelectronics and Electronics (PrimeAsia), 2010 Asia Pacific Conference on Postgraduate Research in
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-6735-8
Electronic_ISBN :
978-1-4244-6736-5
DOI :
10.1109/PRIMEASIA.2010.5604939
