Design of a Low Voltage High Precision CMOS Bandgap Reference

摘要：

A novel curvature compensated low voltage high precision CMOS bandgap reference is introduced in this paper. It adopts a self-biased low-voltage operational amplifier and the specific voltage transfer cell to achieve the features of low power supply and low temperature coefficient with better curvature compensation. A T-type resistor network is designed to reduce the total resistances and therefore to lower the chip area. We simulate the circuit using the Cadence Hspice based on SMIC 0.18um model. The .simulation results show that the circuit has an accuracy of 6.8ppm/℃ with the range from-35℃ to 110℃,a power supply rejection ratio (PSRR) of-90dB and low power consumption of 36.46uW.

关键词： low voltage curvature compensated operational amplifier bandgap reference

作者: Qin Su Yongsheng Yin Honghui Deng

作者单位: Institute of VLSI Design,Hefei University of Technology,Hefei,Anhui 230009,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 1419-1422

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）