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Novel current feedback operational amplifier-based configuration that realizes a single-input multiple-output-type universal active filter and a single-resistance-controlled oscillator
International Journal of Circuit Theory and Applications ( IF 2.3 ) Pub Date : 2022-08-12 , DOI: 10.1002/cta.3404
Data Ram Bhaskar 1 , Ajishek Raj 1 , Raj Senani 2
Affiliation  

A new configuration employing five current feedback operational amplifiers (CFOAs), six resistors, and two grounded capacitors is proposed, which realizes a single-input-multiple-output (SIMO)-type voltage-mode (VM) universal active filter and a single-resistance-controlled oscillator (SRCO) and simultaneously provides the following novel features: (i) realizability of all the five generic filter functions namely, low pass filter (LPF), high pass filter (HPF), band pass filter (BPF), band reject filter (BRF), and all pass filter (APF) at the five output terminals of the five CFOAs; (ii) infinite input impedance and zero output impedance in all the realizations; (iii) availability of orthogonal tunability of the filter parameters (pole frequency, quality factor/BW, and gain); (iv) realizability of an SRCO exhibiting independent control of the condition of oscillation (CO) and frequency of oscillation (FO) by the simple artifice of changing one circuit connection; and (v) use of both grounded capacitors, as preferred for IC implementation. To demonstrate the workability of the proposed configuration, SPICE simulation results and experimental results have been included.

中文翻译:

实现单输入多输出型通用有源滤波器和单电阻控制振荡器的基于电流反馈运算放大器的新型配置

提出了一种采用五个电流反馈运算放大器 (CFOA)、六个电阻器和两个接地电容器的新配置,实现了单输入多输出 (SIMO) 型电压模式 (VM) 通用有源滤波器和单个- 电阻控制振荡器 (SRCO),同时提供以下新功能:(i)所有五个通用滤波器功能的可实现性,即低通滤波器 (LPF)、高通滤波器 (HPF)、带通滤波器 (BPF),五个 CFOA的五个输出端的带阻滤波器 (BRF) 和全通滤波器 (APF); (ii) 所有实现中的无限输入阻抗和零输出阻抗;(iii) 滤波器参数(极点频率、品质因数/BW 和增益)的正交可调谐性的可用性;(iv) SRCO 的可实现性,通过改变一个电路连接的简单技巧表现出对振荡条件 (CO) 和振荡频率 (FO) 的独立控制;(v) 使用两个接地电容器,作为 IC 实施的首选。为了证明所提出配置的可行性,SPICE 仿真结果和实验结果已包括在内。
更新日期:2022-08-12
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