采用0.18μm CMOS技术的2μW生物医学前端和ΣΔ ADC，适用于自供电u -医疗设备

2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS) Pub Date : 2015-06-07 DOI:10.1109/NEWCAS.2015.7182054

P. Jha, P. Patra, J. Naik, A. Dutta, A. Acharyya, P. Rajalakshmi, S. Singh

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引用次数: 3

摘要

本文提出了一种超低功耗模拟前端(AFE)与ΣΔ调制器ADC用于采集生物电位信号。该系统由具有可编程增益和带宽的信号调理级、混合信号自动增益控制(AGC)和ΣΔ ADC组成。整个系统采用UMC 18μm CMOS设计。该AFE在0.47μW功耗下实现了10位以上的整体线性度。该ADC提供二阶噪声整形，采用单积分器，ENOB为~12位，功耗为1.4μW。该系统成功地对PTB数据库中的心电信号进行了测试。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A 2μW biomedical frontend with ΣΔ ADC for self-powered U-healthcare devices in 0.18μm CMOS technology

This paper presents an ultra-low power analog front end (AFE) with ΣΔ modulator ADC meant for acquisition of biopotential signals. The system consists of a signal conditioning stage with programmable gain and bandwidth, a mixed signal automatic gain control (AGC), and a ΣΔ ADC. The full system is designed in UMC 18μm CMOS. The AFE achieves an overall linearity of more 10 bits with 0.47μW power consumption. The ADC provides 2nd order noise shaping while using single integrator and an ENOB of ~12 bits with 1.4μW power consumption. The system was successfully tested for a ECG signal from PTB database.

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2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)

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