Title :
A high performance bandgap voltage reference design
Author :
Zhang, Kun ; Wu, Di
Author_Institution :
School of Electronic and Information Engineering, Beijing Jiaotong University, China
Abstract :
Based on SMIC 0.18um N well CMOS process, a bandgap voltage reference of power circuit with high performance is designed. By means of the conventional bandgap reference, a cascade current mirror is used to increase power supply rejection and decrease the influence of circuit noise. The bias voltage of the cascade current mirror is provided by an op-amp and hence the independence of bandgap voltage on the power supply. The simulation of such a power circuit is performed by Spectre, when operating at a 3.3V power supply within the temperature range −20°C∼100°C, the results lead to a temperature coefficient of 5.223ppm/°C. Power supply rejection of the circuit can reach −81.78dB. Within the power supply ranging from 3.0V∼4.5V, it outputs a voltage of 1.1975V ± 0.5mV.The dissipation in the bandgap reference circuit is less than 0.2mW.
Keywords :
CMOS integrated circuits; CMOS technology; Educational institutions; Mirrors; Photonic band gap; Power supplies; Temperature distribution; CMOS; bandgap voltage reference; corner(TT,FF,SS); power supply rejection; temperature coefficient;
Conference_Titel :
Information Science and Engineering (ICISE), 2010 2nd International Conference on
Conference_Location :
Hangzhou, China
Print_ISBN :
978-1-4244-7616-9
DOI :
10.1109/ICISE.2010.5691718
