DocumentCode
3606255
Title
Super class-AB bulk-driven OTAs with improved slew rate
Author
Xiao Zhao ; Qisheng Zhang ; Ming Deng
Author_Institution
Sch. of Geophys. & Inf. Technol., China Univ. of Geosci., Beijing, China
Volume
51
Issue
19
fYear
2015
Firstpage
1488
Lastpage
1489
Abstract
A super class-AB bulk-driven (BD) operational transconductance amplifier (OTA) with improved slew rate (SR) is presented. The proposed OTA utilises bulk flipped voltage follower for the BD input stage and a nonlinear current mirror for the active load to enhance the SR of conventional BD counterpart. Both the traditional and the proposed OTA, have been simulated on the UMC 180 nm process, and results show that the proposed BD OTA achieves a 350% SR enhancement with only 25% increased power dissipation compared with the conventional one.
Keywords
operational amplifiers; UMC process; bulk flipped voltage follower; nonlinear current mirror; operational transconductance amplifier; size 180 nm; slew rate; super class AB bulk-driven OTA;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2015.1776
Filename
7272228
Link To Document