A Low Power Biopotential Amplifier based on Bulk Driven Quasi Floating Gate Technique

Preeti Sharma, K. Sharma, H. S. Jatana, Rajnish Sharma
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引用次数: 3

Abstract

Design of low-power and low-noise Biopotential Amplifier (BPA) plays crucial role in the success of high end medical diagnosis systems. However, most of these researched BPAs face a major challenge of consuming large amount of power and also exhibit high values of Noise Efficiency Factor (NEF). Here we report the design of a BPA using Bulk-Driven Quasi-Floating Gate (BDQFG) technique which consumes only low-power $(\mathbf{0.657 \mu \mathrm{W})}$ and also exhibits NEF of 2.06. Circuit design and simulation have been performed in Cadence Analog Design Environment using standard $\mathbf{0.18\ \mu \mathrm{m}}$ technology. Besides promising results on power and noise, design of the BPA using BDQFG technique has also been fine-tuned to achieve mid-band gain of 38.3 dB (from 2.9 Hz to −3dB frequency of 735.5 Hz) and phase margin of 80.6°.
基于体驱动准浮门技术的低功耗生物电位放大器
低功耗、低噪声生物电位放大器的设计对高端医疗诊断系统的成功与否起着至关重要的作用。然而,这些研究的双酚a大多面临着功耗大和噪声效率系数(NEF)值高的主要挑战。在这里,我们报告了采用体积驱动的准浮动门(BDQFG)技术设计的BPA,其功耗仅为低功耗$(\mathbf{0.657 \mu \ mathm {W})}$, NEF为2.06。采用标准的$\mathbf{0.18\ \mu \mathbf{m}}$技术,在Cadence模拟设计环境中进行了电路设计和仿真。除了在功率和噪声方面取得令人满意的结果外,采用BDQFG技术的双酚a设计也经过了微调,实现了38.3 dB的中频增益(从2.9 Hz到735.5 Hz的- 3dB频率)和80.6°的相位裕度。
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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