⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出一种面积仅为0.06mm²的斩波稳定电流反馈仪表放大器，采用自动差分对匹配（ADPM）数字校准技术，有效减小斩波引起的输出纹波，实现了14nV/√Hz的低输入参考噪声和小于3.5μV的失调电压，适用于高空间分辨率生物医学和环境监测阵列传感器。
Electronics-Inspired Interdisciplinary Research Institute (EIIRIS), Toyohashi, Japan 1 2 A small-area low-power low-noise instrumentation amplifier (IA) is desired in arrayed sensor devices that are used for high-spatial-resolution biomedical and environment monitoring systems. This paper presents a 0.06mm2 chopper-stabilized current-feedback IA with 13.5nV/√Hz input-referred noise and less than 3.5μV offset voltage. For significantly reducing the ripple due to chopping, the proposed IA uses a novel digital calibration scheme, namely, automatic differential-pair matching (ADPM), which enables a small die area and low-power operation. The proposed IA is implemented in a standard 0.18μm CMOS and achieves a noise efficiency factor (NEF) of 7.2 while drawing 194μA. The active area of the IA is 7.8× smaller than that of the state-of-the-art [1-5] while it maintains low output ripple, low noise, and low power.
Ippei Akita1, Makoto Ishida1,2
Toyohashi University of Technology, Toyohashi, Japan,