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| 基于运放和模拟开关的可编程放大器实验设计 |
| Experimental Design of Programmable Amplifier Based on Op-Amp and Analog Switch |
| 投稿时间：2022-05-02 修订日期：2022-07-10 |
| DOI： |
| 中文关键词: 可编程放大器 模拟开关 实验教学 |
| 英文关键词: programmable amplifier analog switch experimental teaching |
| 基金项目:江苏省高等学校自然科学面上项目(21KJB510021) |
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| 中文摘要: |
| 可编程放大器是电子测量常用器件，可扩大输入信号的量程范围。单片可编程放大芯片集成度高、价格不菲，学生对其内部结构了解甚少。实验采用通用运放和模拟开关实现4级量程可编程放大。学生通过实验可更好地理解可编程放大器工作原理，有益于提高学生工程实践创新能力，拓展了实验教学的深度与广度。实验电路成本低、工作稳定，可作为应急方案用于大学生电子设计竞赛等场景。 |
| 英文摘要: |
| Programmable amplifiers are common devices used in electronic measurement to extend the range of input signals. Single-chip programmable amplifiers are highly integrated and expensive, and students have little understanding of their internal structure. The experimental design uses general-purpose operational amplifier and analog switch to implement a 4-stage range programmable amplifier. Students can better understand the operating principle of the programmable amplifier through this experiment, which is beneficial to improve students' engineering practice and innovation ability and expand the depth and breadth of experimental teaching. In addition, the programmable amplifier designed in this paper is low cost and stable, which can be used as an emergency solution in some scenarios, such as the National Undergraduate Electronics Design Contest. |
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