New Curvature-Coefficient-Canceled Technique for High-Precision CMOS Bandgap References
A new technique of curvature-coefficient-canceled for CMOS bandgap voltage reference is presented,which takes advantage of the self-controlled theory to obtain the VREF and the logarithmic voltage used to cancel the nonlinear term of VBe simultaneously. This technique is implemented by two structures whose VreF are obtained by resistive subdivision approach and mixed mode topology respectively,which are designed in standard CMOS technology with VTN=0.4V and VTP=-0.5V. Simulation results indicate that the reference voltages are 783mV and 777mV,the temperature coefficients (TC) are 2.1ppm/℃ and 3.3ppm/℃,respectively. The power supply rejection (PSR) of both circuits are less than -30dB below 10 kHz. These circuits dissipate about 50uW and 60uW at 25℃ with a IV supply,respectively. Multiple arbitrary sub-references can be obtained due to the use of voltage regulator in the circuits.
Linzhen Li Qi Yu Jingchun Li Li Lian
State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China,Sichuan,Chengdu 610054,P.R.China
国际会议
9th International Conference on Solid-State and Integrated-Circuit Technology(第9届固态和集成电路国际会议)
北京
英文
1777-1780
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）