Two current feedback operational amplifier based grounded impedance multiplier circuit

e-Prime - Advances in Electrical Engineering, Electronics and Energy Pub Date : 2025-03-10 DOI:10.1016/j.prime.2025.100960

Navnit Kumar , Manjeet Kumar , Neeta Pandey

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引用次数: 0

Abstract

This paper presents Current Feedback Operational Amplifier (CFOA) based grounded impedance multiplier circuit. This circuit is designed using two CFOAs and three passive components. Suitable choice of passive components enables proposal to emulate grounded capacitance multiplier (GCM), grounded inductance multiplier (GIM), frequency dependent negative resistor (FDNR) and grounded resistance divider (GRD) circuit. The GCM circuit employs grounded capacitor, which is an attraction for integration process. It does not include resistor and capacitor at Z terminal and X terminal of CFOA respectively. Thus, theoretical plot of GCM circuit follows simulated plot up to four decades. Effect of parasitic components on operating frequency range of the proposed circuits is mathematically modelled. In addition, temperature sensitivity of the designed circuit is also examined. A Monte Carlo study is performed to analyse robustness of the proposal against variations in the passive components. To illustrate the applicability of the proposal, active filters and oscillator are constructed. SPICE simulations using macro-model of IC AD844/AD with ± 5 V supply voltage is included as proof of concept.

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基于接地阻抗乘法器的双电流反馈运算放大器电路

提出了一种基于电流反馈运算放大器的接地阻抗乘法器电路。该电路采用两个cfoa和三个无源元件设计。选择合适的无源元件可以模拟接地电容倍增器（GCM）、接地电感倍增器（GIM）、频率相关负电阻（FDNR）和接地电阻分压器（GRD）电路。GCM电路采用了接地电容，这对集成过程有很大的吸引力。不包括CFOA的Z端和X端电阻和电容。因此，GCM电路的理论图遵循了40年的模拟图。对寄生元件对电路工作频率范围的影响进行了数学建模。此外，还对所设计电路的温度灵敏度进行了测试。蒙特卡罗研究进行了分析鲁棒性的建议对变化的被动成分。为了说明该方案的适用性，构造了有源滤波器和振荡器。采用±5 V电源电压下的IC AD844/AD宏观模型进行SPICE仿真，作为概念验证。

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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来源期刊

e-Prime - Advances in Electrical Engineering, Electronics and Energy

CiteScore

2.10

自引率

0.00%

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