Design of Two-Stage Operation Amplifier Circuit Based on Low Power Consuption

DOI

10.2991/978-94-6463-821-9_91How to use a DOI?

Keywords

Portable; Low Power Consuption; Two-Stage Operation Amplifier Circuit

Abstract

Portable low-power design has gained increasing significance due to user demands for fragmented usage scenarios and the pursuit of energy efficiency, environmental sustainability, and extended battery life. The two-stage operational amplifier (OPAMP) circuit, characterized by high gain, low power consumption, and moderate bandwidth, plays a pivotal role in portable low-power systems. The two-stage operational amplifier circuits, due to their inherent characteristics aligning with the demands of low-power portable devices and their superior performance compared to conventional op-amp configurations, have been increasingly adopted in the design of various low-power portable electronic systems. This circuit architecture comprises a differential amplification stage followed by a common-source amplification stage. The input signal is preliminarily amplified through the differential stage and subsequently undergoes secondary amplification via the common-source stage, thereby achieving high gain. To stabilize the gain and ensure sufficient phase margin, a Miller compensation capacitor is inserted between the input and output terminals of the common-source stage. The proposed design demonstrates high-gain signal amplification under ultralow power constraints.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Yuze Liu
PY  - 2025
DA  - 2025/08/31
TI  - Design of Two-Stage Operation Amplifier Circuit Based on Low Power Consuption
BT  - Proceedings of the 2025 2nd International Conference on Mechanics, Electronics Engineering and Automation (ICMEEA 2025)
PB  - Atlantis Press
SP  - 948
EP  - 958
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-821-9_91
DO  - 10.2991/978-94-6463-821-9_91
ID  - Liu2025
ER  -