Title :
A high precision CMOS bandgap reference with second-order curvature-compensation
Author :
Zhang, Chuan ; He, Shuzhuan ; Zhu, Ying ; Gao, Miglun
Author_Institution :
Nanjing Univ., Nanjing
Abstract :
A high precision bandgap reference circuit with second-order curvature-compensation to improve the temperature coefficient in wider temperature range is presented in this paper. Simulation results with CSMC 0.6 mum 2P2M CMOS process model show that, the design features a reference voltage of 1.255 V at 25degC. The temperature coefficient is less than 5.29 ppm/degC at the range of -35-120 degC. With supply voltage variation of 2-5 V, the line-regulation ratio is 110 muV/V And PSRR is -81.54 dB. The active area of layout is 300 mum times 400 mum. Test results based on 20 samples show a good agreement with the simulation results.
Keywords :
CMOS integrated circuits; low-power electronics; power supply circuits; CMOS bandgap reference; curvature compensation; low power dissipation; power supply noise rejection; size 0.6 mum; temperature 25 degC; voltage 1.255 V; Circuits; Helium; Laboratories; Operational amplifiers; Photonic band gap; Physics; Pulse width modulation; Temperature distribution; Very large scale integration; Voltage;
Conference_Titel :
ASIC, 2007. ASICON '07. 7th International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4244-1132-0
Electronic_ISBN :
978-1-4244-1132-0
DOI :
10.1109/ICASIC.2007.4415690
