Title :
A high order curvature-compensated op-amps-avoided Bandgap Reference
Author :
Yu, Qi ; Chen, Zhi ; Ning, Ning ; Liu, Hao ; Chen, Hong ; Zhang, Wandong
Author_Institution :
State Key Lab. of Elec. Thin Films & Integrated Devices, UESTC, Chengdu, China
Abstract :
Based on Brokaw bandgap cell, an improved implementation of BGR which consists of a temperature compensated circuit and a simple feedback loop circuit is presented. The circuit exploits a high-order compensation method to realize a low TC and uses an op-amp-avoided feedback loop circuit to save the power dissipation. Implemented in 0.5μm BCD process, the proposed circuit achieves a TC of 1.9 ppm/°C over a temperature range from -40°C to 125°C.
Keywords :
operational amplifiers; Brokaw bandgap cell; feedback loop circuit; high order curvature-compensation; op-amps-avoided bandgap reference; power dissipation; temperature -40 degC to 125 degC; temperature compensated circuit; Equations; Feedback loop; MOSFET circuits; Photonic band gap; Temperature dependence; Temperature distribution;
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-5797-7
DOI :
10.1109/ICSICT.2010.5667368
