|
HKUST Institutional Repository >
Electronic and Computer Engineering >
ECE Journal/Magazine Articles >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/1783.1/2351
|
| Title: | Advances in active-feedback frequency compensation with power optimization and transient improvement |
| Authors: | Lee, Hoi
Mok, Philip |
| Keywords: | Active-feedback
Amplifiers
Dynamic feed-forward stage
Frequency compensation
Low-power stability strategy
Multistage amplifiers |
| Issue Date: | 2004 |
| Citation: | IEEE transactions on fundamental theory and applications, v. 51, iss. 9, September 2004, p. 1690-1696 |
| Abstract: | This paper presents a low-power stability strategy to significantly reduce the power consumption of a three-stage amplifier using active-feedback frequency compensation (AFFC). The bandwidth of the amplifier can also be enhanced. Simulation results verify that the power dissipation of the AFFC amplifier is reduced by 43% and the bandwidth is improved by 32.5% by using the proposed stability strategy. In addition, a dynamic feed-forward stage (DFS), which can be embedded into the AFFC amplifier to improve the transient responses without consuming extra power, is proposed. Implemented in a 0.6-um CMOS process, experimental results show that both AFFC amplifiers with and without DFS achieve almost the same small-signal performances while the amplifier with DFS improves both the negative slew rate and negative 1% settling time by 2 times. |
| Rights: | © 2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| URI: | http://hdl.handle.net/1783.1/2351 |
| Appears in Collections: | ECE Journal/Magazine Articles
|
Files in This Item:
| File |
Description |
Size | Format |
|---|
| 200409TCASI_AFFC.pdf | pre-published version | 279Kb | Adobe PDF | View/Open |
|
All items in this Repository are protected by copyright, with all rights reserved.
|
