一个CMOS电压参考与PTAT电流使用DIBL补偿低线路灵敏度.
1Department of Electronic Engineering, Hanbat National University, Daejeon 34158, Republic of Korea.
Sensors (Basel, Switzerland)
|November 13, 2025
概括
这项研究引入了低功率的CMOS电压参考电路,以最大限度地降低供应灵敏度. 新的设计提高了电压和电流的线路灵敏度 (LS),这对于稳定的电子系统至关重要.
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
- 半导体设备 半导体设备
背景情况:
- 稳定的电压和电流参考值对于模拟和混合信号电路至关重要.
- 传统的设计经常与供应电压变化作斗争,影响性能.
- 低功耗是现代便携式和嵌入式系统的关键要求.
研究的目的:
- 提出一种新的低功率CMOS电压参考,具有增强的线路灵敏度 (LS).
- 为了改进LS,将基于排水诱导的降低屏障 (DIBL) 的补偿路径纳入.
- 为了同时提供稳定的参考电压和偏移电流.
主要方法:
- 在180nm标准CMOS技术中设计和验证电路.
- 将基于DIBL的LS补偿路径集成到PTAT (比绝对温度) 电流生成电路中.
- 模拟性能指标,包括线路灵敏度,温度系数和电源拒绝率.
主要成果:
- 实现了0.01%/V的LS用于电压参考和0.07%/V用于偏移电流参考.
- 在1.4V至2V的供应电压范围内工作.
- 产生了538mV的参考电压和38nA的PTAT电流,耗电量仅为68nW.
- 模拟温度系数为58 ppm/°C (-40°C至130°C) 和PSRR为-100 Hz的-59 dB.
结论:
- 拟议的电路有效地弥补了电线在电压和电流参考值上的敏感性.
- 该设计在广泛的温度范围内实现了出色的低功耗性能和稳定性.
- 这项工作为集成电路中低功耗,高性能电压和电流参考需求提供了强大的解决方案.
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