Research and Design on Noise Performance Optimization of Operational Amplifiers
Jielan Tsai · Applied and Computational Engineering · 2025
With the department of electronic technology, operational amplifiers (or op-amps) are playing an increasingly vital role in signal processing. Noise, as one of the key factors affecting the performance of operational amplifiers, has become a significant topic in electronic design for controlling and optimizing performance. This paper begins by categorizing and analyzing common types of noise found in operational amplifiers, including thermal noise, shot noise, and flicker noise, and discusses their mechanisms of generation. Based on this foundation, the paper proposes three noise reduction strategies: circuit design optimization, shielding processes, and physical layer design. Circuit design optimization reduces noise by selecting appropriate components and adjusting circuit layouts; shielding processes employ electrostatic, electromagnetic, and magnetic shielding techniques to minimize external interference; physical layer design optimizes noise performance by altering component dimensions. Through referenced research and analysis, this paper demonstrates the effectiveness of the proposed noise reduction methods and showcases their performance enhancements in practical applications. Finally, the paper summarizes the research findings and provides an outlook on future research directions.