DocumentCode
1350350
Title
High-speed rail-to-rail output buffer amplifier with dynamic-bias circuit
Author
Tsai, Cheng-Hao ; Wang, Jen-Huo ; Chang, Chao-Tsun ; Wang, Chih-Yu
Author_Institution
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Volume
45
Issue
24
fYear
2009
Firstpage
1199
Lastpage
1200
Abstract
The design of a high-speed output buffer amplifier for driving the large column line loads of large-size TFT-LCDs is presented. The major circuit of the output buffer is a rail-to-rail current mirror amplifier which can control the class-AB output stage and auxiliary output stage at the same time. The proposed dynamic bias method not only increases the driving capability of the class-AB output stage but also maintains a small quiescent current path.
Keywords
amplifiers; buffer circuits; driver circuits; liquid crystal displays; thin film transistors; auxiliary output stage; class-AB output stage; dynamic-bias circuit; high-speed rail-to-rail output buffer amplifier; large-size TFT-LCDs;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2009.2692
Filename
5349266
Link To Document