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2009 WRI World Congress on Computer Science and Information Engineering
Design of a Rail-to-Rail Constant-gm CMOS Operational Amplifier
Los Angeles, California USA
March 31-April 02
ISBN: 978-0-7695-3507-4
ASCII Text
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Zhao Wu, Fu Rui, Zhang Zhi-Yong, Cheng Wei-Dong, "Design of a Rail-to-Rail Constant-gm CMOS Operational Amplifier," Computer Science and Information Engineering, World Congress on, vol. 6, pp. 198-201, 2009 WRI World Congress on Computer Science and Information Engineering, 2009.
 
 
BibTex
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@article{ 10.1109/CSIE.2009.173,
author = {Zhao Wu and Fu Rui and Zhang Zhi-Yong and Cheng Wei-Dong},
title = {Design of a Rail-to-Rail Constant-gm CMOS Operational Amplifier},
journal ={Computer Science and Information Engineering, World Congress on},
volume = {6},
year = {2009},
isbn = {978-0-7695-3507-4},
pages = {198-201},
doi = {http://doi.ieeecomputersociety.org/10.1109/CSIE.2009.173},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - CONF
JO - Computer Science and Information Engineering, World Congress on
TI - Design of a Rail-to-Rail Constant-gm CMOS Operational Amplifier
SN - 978-0-7695-3507-4
SP198
EP201
A1 - Zhao Wu,
A1 - Fu Rui,
A1 - Zhang Zhi-Yong,
A1 - Cheng Wei-Dong,
PY - 2009
KW - Rail-to-Rail
KW - class-AB
KW - unity
VL - 6
JA - Computer Science and Information Engineering, World Congress on
ER -
 
A Constant-gm CMOS Operational amplifier with Rail-to-Rail input common-mode voltage range has been designed. The input stage is based on two pairs of single p-channel differential pairs and two identical n-channel source followers as DC level shifters, which realizes rail-to-rail input swing. To attain a constant-gm over the whole common-mode input range, the compensation circuit which is based on processing signal currents has also been designed. The technique is universal in that the constant-gm can be obtained independent of I-V characteristic and is compatible with deep submicron CMOS devices. Using BSIM3v3 model of a standard 0.6µm CMOS process, simulation result shows that the input /output swing of the op amp circuit is rail-to-rail. The op-amp achieves open-loop gain of 113.57dB, unity–gain bandwidth of 11.9MHz and phase margin of 53°.
Index Terms:
Rail-to-Rail, class-AB, unity
Citation:
Zhao Wu, Fu Rui, Zhang Zhi-Yong, Cheng Wei-Dong, "Design of a Rail-to-Rail Constant-gm CMOS Operational Amplifier," csie, vol. 6, pp.198-201, 2009 WRI World Congress on Computer Science and Information Engineering, 2009
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