A 0.07mm2 2-Channel Instrumentation Amplifier with 0.1% Gain Matching in 0.16μm CMOS

📋 论文概要

该论文提出了一种0.16μm CMOS工艺下的2通道仪表放大器，实现了0.1%的通道间增益匹配，每通道面积仅为0.035mm²。该设计针对汽车角度传感器等低成本多通道应用，显著提升了面积效率。

💡 主要创新点

• 采用0.16μm CMOS工艺实现0.1%的增益匹配，降低了多通道传感器信号处理的误差。
• 面积优化至0.07mm²（2通道），相比现有设计面积减少了13.3倍，适用于成本受限的汽车应用。

🏷 关键词

📄 原文摘要

are required for cost-constrained automotive applications. Instrumentation amplifiers (IA) for such front-ends must process multi-channel sensor outputs and provide gain matching over the channels for proper sensor operation. Angular sensors are a typical example, in which the sine and cosine outputs of a resistive magnetic sensor must be processed with adequate gain matching to avoid unacceptable angular errors. This paper presents a 2-channel instrumentation amplifier in 0.16μm CMOS with 0.1% gain matching and occupying 0.035mm2 per channel. This represents a 13.3× area improvement with respect to state-of-the-art designs with similar gain accuracy [1]-[4], while maintaining low noise (18.7nV/√Hz), low offset

👥 作者与机构

Fabio Sebastiano1,2, Federico Butti3, Robert van Veldhoven1, Paolo Bruschi3

NXP Semiconductors, Eindhoven, The Netherlands, Delft University of Technology, Delft, The Netherlands, 3 University of Pisa, Pisa, Italy 1 2 Extremely small-area sensor front-ends