基于嵌套的本地反和自适应偏差的高效循环折叠的案号操作传导放大器
Chunkai Wu1, Peng Cai2, Jinghu Li1
1School of Computer and Information Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Sensors (Basel, Switzerland)
|April 26, 2025
概括
我们开发了一种新型增强回收折叠cascode (ERFC) 运行传导放大器 (OTA) 的高效率和快速过渡响应. 与传统设计相比,ERFC OTA显著改善了转变率和带宽增长产品.
科学领域:
- 模拟集成电路设计模拟集成电路设计
- 低功率电子产品 低功率电子产品
- 在CMOS技术方面,
背景情况:
- 操作传导放大器 (OTA) 是模拟电路的基本组成部分.
- 传统的回收折叠cascode (RFC) OTA在短暂响应和效率方面面临限制,特别是在弱逆转下.
- 提高OTA性能对于现代低功耗应用至关重要.
研究的目的:
- 引入一个新的增强回收折叠cascode (ERFC) 运行传导放大器 (OTA).
- 通过使用嵌套本地反 (ABNLF) 的自适应偏差来提高OTAs的短暂响应和效率.
- 为了实现稳定的大信号响应和高转变率 (SR) 和增强带宽 (GBW) 产品.
主要方法:
- 设计和模拟了一个新的ERFC OTA,其中包含了嵌套本地反 (ABNLF) 的自适应偏差.
- 在输出阶段使用合电容器,以稳定大信号运行.
- 将拟议的ERFC OTA与使用0.18微米CMOS工艺在1.8V的传统RFC OTA进行比较.
主要成果:
- ERFC OTA证明了显著增强的输入传导率和死亡率 (SR).
- 与传统的RFC OTA相比,布局后的模拟显示SR增加了120倍,增强带宽 (GBW) 增加了5.95倍.
- 获得了130.04 (V/μs) ·pF/μA的高功率 (FoM),表明了卓越的效率.
结论:
- 拟议的ERFC与ABNLF的OTA在过渡性响应和效率方面提供了实质性的改进.
- 这种设计适用于需要快速稳定的信号处理的低功耗应用.
- ERFC OTA 代表了与传统 RFC OTA 设计相比的显著进步.
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