一种132b光学近距离传感器系统，具有130klx的环境光抑制能力，能够监测心率和血氧饱和度

ESSCIRC Conference 2015 - 41st European Solid-State Circuits Conference (ESSCIRC) Pub Date : 2015-11-02 DOI:10.1109/ESSCIRC.2015.7313905

Luca Sant, A. Fant, S. Stojanovic, S. Fabbro, J. Ceballos

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引用次数: 6

摘要

提出了一种基于调制光反射的光学接近度测量系统。其新颖的输入级拓扑结构包括交流耦合TIA和基于合成电感阻抗的两级直流抑制电路，提供的读数分辨率优于13.2 ENOB。这使得传感器系统无需修改也可用于心率和血氧饱和度监测。

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A 13.2b optical proximity sensor system with 130klx ambient light rejection capable of heart rate and blood oximetry monitoring

A system for measuring optical proximity based on reflection of modulated light is presented. Its novel input stage topology comprising an AC coupled TIA and a two stage DC rejection circuit based on a synthesized inductive impedance, provides readouts with a resolution better than 13.2 ENOB. This allows the sensor system to be used without modifications also for heart rate and blood oximetry monitoring.

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ESSCIRC Conference 2015 - 41st European Solid-State Circuits Conference (ESSCIRC)

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