A Compact Low-Power High Slew-Rate Rail-to-Rail Class-AB Buffer Amplifier for LCD Driver ICs

Author

Wang, Jia-Hui ; Qiu, Jing-Chuan ; Zheng, Hao-Yuan ; Tsai, Chien-Hung ; Wang, Chen-Yu ; Lee, Ching-Chung ; Chang, Chin-Tien

Author_Institution

Nat. Cheng Kung Univ., Tainan

fYear

2007

fDate

20-22 Dec. 2007

Firstpage

397

Lastpage

400

Abstract

The design of a compact low-power highspeed class-AB buffer amplifier for driving the large column line loads of large-size TFT-LCD is presented in this paper. The class-AB buffer amplifier can drive large column line loads up to lOOOpF within 1.28 mus. The proposed class-AB buffer amplifier is implemented with a standard 0.35 mum CMOS 2-poly 4-metal process technology and simulated using HSPICE. The measurement results show that the power consumption of 25.67 muW, and exhibits the slew rates of 4.5V/ mus and 5V/ mus for rising and falling edges, respectively, under a lOOOpF load. The active area of this class-AB output buffer amplifier is only 47 x 45 mum².

Keywords

CMOS integrated circuits; amplifiers; buffer circuits; driver circuits; liquid crystal displays; low-power electronics; thin film transistors; CMOS 2-poly 4-metal process technology; HSPICE simulation; LCD driver IC; TFT-LCD column line load; liquid crystal display; low-power highspeed class-AB buffer amplifier; size 0.35 mum; CMOS process; CMOS technology; Driver circuits; MOS devices; Mirrors; Operational amplifiers; Power dissipation; Rail to rail amplifiers; Strontium; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices and Solid-State Circuits, 2007. EDSSC 2007. IEEE Conference on

Conference_Location

Tainan

Print_ISBN

978-1-4244-0637-1

Electronic_ISBN

978-1-4244-0637-1

Type

conf

DOI

10.1109/EDSSC.2007.4450146

Filename

4450146