用于模拟信号处理应用的0.5V切割器稳定差分放大器的设计
Xinlan Fan1, Feifan Gao1, Pak Kwong Chan1
1School of Electrical and Electronic Engineering (EEE), Nanyang Technological University, Singapore 639798, Singapore.
Sensors (Basel, Switzerland)
|December 23, 2023
概括
本研究介绍了一种低电压,低功率的切割机稳定差异差异放大器 (DDA),非常适合模拟信号处理. 它使用最小的功率实现高增益和低噪声,使其适合于便携式设备.
科学领域:
- 集成电路设计 集成电路设计
- 模拟电子产品 模拟电子产品
- 低功率电子产品 低功率电子产品
背景情况:
- 不同差异放大器 (DDA) 对于模拟信号处理至关重要.
- 低压和低功耗运行对于现代便携式和嵌入式系统至关重要.
- 切割器稳定是缓解低频噪声和放大器中偏移的关键技术.
研究的目的:
- 为了呈现一种新的低压,低功率直升机稳定 DDA.DA.
- 为了证明有效的频率补偿技术的稳定性.
- 为了突出DDA适用于模拟信号处理应用的适用性.
主要方法:
- 使用40纳米CMOS技术设计和制造三级DDA.
- 推进发送频率补偿和II型补偿器的实施.
- 采用了5kHz切割频率的切割器稳定技术.
主要成果:
- 在0.5V供应电压下实现了89dB的开环增益.
- 它只消耗了0.74微瓦的功率.
- 显示了170kHz的单位增益带宽 (UGB),63.98°的相差 (PM),和100dB的常态拒绝比 (CMRR).
- 证明了低输入噪声 (245 nV/√Hz在1 kHz) 和输入参考偏移 (0.26 mV).
结论:
- 拟议的直升机稳定型DDA在超低电压和功率下提供了出色的性能.
- 该电路有效地抑制了偏移和1/f噪声.
- 这种DDA为模拟信号处理提供了功率,噪声和带宽之间的宝贵权衡.
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