DocumentCode :
1988144
Title :
A high gain low offset amplifier with rail-to-rail inputs
Author :
Zhiying, Zhang ; Xiaobo, Wu ; Xiaolang, Yan
Author_Institution :
Institute of VLSI Design, Zhejiang University, Hangzhou, China. E-mail: zhangzy@vlsi.zju.edu.cn
fYear :
2005
fDate :
19-21 Dec. 2005
Firstpage :
445
Lastpage :
448
Abstract :
To fit some applications like in Power Management IC (Integrated Circuit), ahigh gain low offset BiCMOS op amp was proposed in this paper. A complementary input stage was adopted to meet a rail-to-rail ICMR (Input Common-Mode Range). And a special circuit configuration was introduced into the rail-to-rail amplifier to keep its gain constant. Simulation showed that the variation of gmwas maintained within 2% over the whole input range. Meanwhile, by using bipolar input stage and current compensating circuit, the offset voltage of the op amp was reduced to less than 0.5mV.
Keywords :
Application specific integrated circuits; BiCMOS integrated circuits; Energy management; Operational amplifiers; Power amplifiers; Rail to rail amplifiers; Rail to rail inputs; Resistors; Transconductance; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electron Devices and Solid-State Circuits, 2005 IEEE Conference on
Print_ISBN :
0-7803-9339-2
Type :
conf
DOI :
10.1109/EDSSC.2005.1635303
Filename :
1635303
Link To Document :
بازگشت