采用无源积分器和带推挽输出的OTA的节能有源rc滤波器

IF 5.2 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems I: Regular Papers Pub Date : 2025-04-11 DOI:10.1109/TCSI.2025.3554894

Liangbo Lei;Cong Tao;Zhipeng Chen;Zhiliang Hong;Yumei Huang

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引用次数: 0

摘要

提出了一种具有高动态范围（DR）的低功耗四阶50 mhz有源rc滤波器。与传统的Tow-Thomas biquads不同，该设计采用无源积分器作为第二极，以降低功耗，提高噪声性能，并便于频率补偿。有源积分器具有两级操作跨导放大器（OTA），具有推挽输出，确保线性并降低OTA的增益要求。该滤波器采用标准的0.18- $\mu $ m CMOS技术制造，在30 MHz时实现带内（IB）输入三阶截距点（IIP3）为+29.9 dBm，输入参考IB集成噪声为$163.8~ $\mu $ VRMS，而在50 MHz带宽下消耗5.4 mW。

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A Power-Efficient Active-RC Filter Using Passive Integrator and OTA With Push-Pull Output

This paper presents a power-efficient fourth-order, 50-MHz active-RC filter with high dynamic range (DR). Unlike conventional Tow-Thomas biquads, the proposed design employs a passive integrator as the second pole to reduce power consumption, enhance noise performance, and facilitate frequency compensation. The active integrator features a two-stage operational transconductance amplifier (OTA) with a push-pull output, ensuring linearity and reducing the OTA’s gain requirements. Fabricated in standard 0.18-

$\mu $

m CMOS technology, the proposed filter achieves an in-band (IB) input third-order intercept point (IIP3) of +29.9 dBm at 30 MHz and an input-referred IB integrated noise of

$163.8~\mu $

VRMS, while consuming 5.4 mW for a 50-MHz bandwidth.

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来源期刊

IEEE Transactions on Circuits and Systems I: Regular Papers 工程技术-工程：电子与电气

CiteScore

9.80

自引率

11.80%

发文量

441

审稿时长

2 months

期刊介绍： TCAS I publishes regular papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: - Circuits: Analog, Digital and Mixed Signal Circuits and Systems - Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic - Circuits and Systems, Power Electronics and Systems - Software for Analog-and-Logic Circuits and Systems - Control aspects of Circuits and Systems.