用于生物信号应用的 16-nW 0.5-V 低通滤波器

IF 3 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications Pub Date : 2024-10-31 DOI:10.1016/j.aeue.2024.155570

Punnavich Phatsornsiri , Montree Kumngern , Fabian Khateb , Usa Torteanchai , Natapong Wongprommoon , Tomasz Kulej

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引用次数: 0

摘要

本文介绍了一种用于生物信号应用的低电压、超低功耗全差分低通滤波器，它采用了多输入全差分运算跨导放大器（OTA）。多输入动态阈值 MOS 晶体管（MIDT-MOST）技术可实现 OTA 的多输入。这项工作的新颖之处在于利用多输入 OTA 展示了所提出的滤波器，从而减少了有源 OTA 的数量和功耗。介绍了由两个二阶滤波器级联而成的四阶低通滤波器。该四阶低通滤波器是在 Cadence 环境下设计和仿真的，采用了台积电的 0.18 μm CMOS 技术，电源电压为 0.5 V。仿真结果表明，该滤波器在 110 Hz 带宽下的功耗为 16 nW，在 204.96 mV 输入振幅下的总谐波失真 (THD) 为 1%，动态范围为 69.24 dB。这些结果表明，所提出的低通滤波器可用于生物信号处理应用。

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16-nW 0.5-V low-pass filter for bio-signal applications

A low-voltage, ultra-low power fully differential low-pass filter for bio-signal applications using multiple-input fully differential operational transconductance amplifiers (OTA) is presented in this article. The multiple inputs of OTA can be achieved using multiple-input dynamic threshold MOS transistor (MIDT-MOST) technique. The novelty of this work is to exhibit the proposed filter using multiple-input OTAs, which leads to a reduction in the number of active OTAs and power consumption. The fourth-order low-pass filter that is cascaded by two second-order filters has been presented. The fourth-order low-pass filter is designed and simulated in the Cadence environment using the 0.18 μm CMOS technology from TSMC at a supply voltage of 0.5 V. The simulation results show that the filter consumes 16 nW of power at a bandwidth of 110 Hz, has a total harmonic distortion (THD) of 1 % at 204.96 mV input amplitude, and provides dynamic range of 69.24 dB. These results indicate that the proposed low-pass filter can be applied to bio-signal processing applications.

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来源期刊

Aeu-International Journal of Electronics and Communications 工程技术-电信学

CiteScore

6.90

自引率

18.80%

发文量

292

审稿时长

4.9 months

期刊介绍： AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including: signal and system theory, digital signal processing network theory and circuit design information theory, communication theory and techniques, modulation, source and channel coding switching theory and techniques, communication protocols optical communications microwave theory and techniques, radar, sonar antennas, wave propagation AEÜ publishes full papers and letters with very short turn around time but a high standard review process. Review cycles are typically finished within twelve weeks by application of modern electronic communication facilities.