Novel Multifunction Filter using Current Feedback Amplifier

2021 ◽  
Vol 9 (1) ◽  
pp. 18-21
Author(s):  
Dr. Nisha Walde ◽  
Mr. Prashant Kumar Mavi
Keyword(s):  
Current Feedback ◽  
Matching Conditions ◽  
Voltage Mode ◽  
Feedback Amplifier ◽  
Current Feedback Amplifier ◽  
Low Pass ◽  
Multifunction Filter ◽  
Component Matching ◽  
Band Pass ◽  
Circuit Configuration

One configuration for realizing voltage- mode multifunction filters using current feedback amplifiers (CFOA) is presented. The proposed voltage -mode circuit exhibit simultaneously low pass and band pass filters. The proposed circuits offer the following features: No requirements for component matching conditions; low active and passive sensitivities; employing only grounded capacitors and the ability to obtain multifunction filters from the same circuit configuration.

scholarly journals Voltage/Current-Mode Multifunction Filters Using Current-Feedback Amplifiers and Grounded Capacitors

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
Jiun Wei Horng ◽  
Pei-Young Chou ◽  
Jian-Yu Wu
Keyword(s):  
Current Mode ◽  
Current Feedback ◽  
Matching Conditions ◽  
Voltage Mode ◽  
Component Matching ◽  
Circuit Configuration

One configuration for realizing voltage-mode multifunction filters and another configuration for realizing current-mode multifunction filters each using two current-feedback amplifiers (CFAs) are presented. The proposed voltage-mode circuit exhibits simultaneously lowpass, bandpass, and highpass filters. The proposed current-mode circuit also exhibits simultaneously lowpass, bandpass, and highpass filters. The proposed circuits offer the following features: no requirements for component matching conditions, low active and passive sensitivities, employing only grounded capacitors, and the ability to obtain multi-function filters from the same circuit configuration.

scholarly journals Three-Input Single-Output Voltage-Mode Multifunction Filter with Electronic Controllability Based on Single Commercially Available IC

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Supachai Klungtong ◽  
Dusit Thanapatay ◽  
Winai Jaikla
Keyword(s):  
Output Voltage ◽  
Matching Condition ◽  
Passive Component ◽  
Voltage Mode ◽  
Single Output ◽  
Rlc Circuit ◽  
Low Pass ◽  
Multifunction Filter ◽  
Component Matching ◽  
Technology Corporation

This paper presents a second-order voltage-mode filter with three inputs and single-output voltage using single commercially available IC, one resistor, and two capacitors. The used commercially available IC, called LT1228, is manufactured by Linear Technology Corporation. The proposed filter is based on parallel RLC circuit. The filter provides five output filter responses, namely, band-pass (BP), band-reject (BR), low-pass (LP), high-pass (HP), and all-pass (AP) functions. The selection of each filter response can be done without the requirement of active and passive component matching condition. Furthermore, the natural frequency and quality factor are electronically controlled. Besides, the nonideal case is also investigated. The output voltage node exhibits low impedance. The experimental results can validate the theoretical analyses.

scholarly journals High-Input Impedance Voltage-Mode Multifunction Filter

2021 ◽  
Vol 11 (1) ◽  
pp. 387
Author(s):  
San-Fu Wang ◽  
Hua-Pin Chen ◽  
Yitsen Ku ◽  
Yi-Fang Li
Keyword(s):  
Input Impedance ◽  
Angular Frequency ◽  
High Input ◽  
High Input Impedance ◽  
Current Feedback ◽  
Circuit Performance ◽  
Voltage Mode ◽  
Biquad Filter ◽  
Low Pass ◽  
Multifunction Filter

This paper proposes a high-input impedance voltage-mode (VM) multifunction biquad filter which employs three current-feedback amplifiers (CFAs), three resistors, and two grounded capacitors. The proposed VM multifunction biquad filter has single-input and triple-output and can realize non-inverting low-pass (NLP), inverting band-pass (IBP), and non-inverting band-stop (NBS) voltage responses at the same time without increasing component selection. The proposed VM multifunction biquad filter enjoys the orthogonal tunability of angular frequency and quality factor and also provides the advantage of using only two grounded capacitors, high-input impedance and low active/passive sensitivity. The performance of the proposed VM multifunction biquad filter is verified through its hardware implementation and OrCAD PSpice simulation based on AD844-type CFAs. The circuit analysis, sensitivity analysis, and NLP, IBP, and NBS voltage responses are also shown in this paper. The paper presents a method to effectively reduce the active and passive components, maintain good circuit performance, and reduce circuit costs.

Current-mode and voltage-mode universal biquads using a single current-feedback amplifier

1999 ◽  
Vol 86 (8) ◽  
pp. 929-932 ◽  
Author(s):  
CHUN-LI HOU ◽  
CHIEN-CHIH HUANG ◽  
YU-SHI LAN ◽  
JENG-JER SHAW ◽  
CHUN-MING CHANG
Keyword(s):  
Current Mode ◽  
Current Feedback ◽  
Voltage Mode ◽  
Feedback Amplifier ◽  
Current Feedback Amplifier ◽  
Universal Biquads

scholarly journals Single Active Element Based Voltage-Mode Multifunction Filter

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Jitendra Mohan ◽  
Bhartendu Chaturvedi ◽  
Sudhanshu Maheshwari
Keyword(s):  
The Novel ◽  
Voltage Mode ◽  
Fully Differential ◽  
Low Pass ◽  
Generic Filter ◽  
Multifunction Filter ◽  
Single Input ◽  
Band Pass ◽  
The Subject ◽  
High Pass

The paper presents a new voltage-mode multifunction filter. The proposed filter employs single modified fully differential second generation current conveyor (FDCCII), two grounded capacitors, and three resistors. The proposed circuit enjoys the employment of two grounded capacitors (attractive for absorbing shunt parasitic capacitance and ideal for IC implementation). The proposed circuit provides all five generic filter responses (low pass (LP), high pass (HP), band pass (BP), notch (NH), and all pass (AP) filter responses) simultaneously with single input. The novel proposed filter has low active and passive sensitivities. A number of time domain and frequency domain simulation results depicted through PSPICE using 0.18 µm TSMC process parameters are included to validate the theory. The proposed circuit is expected to enhance the existing knowledge on the subject.

scholarly journals A Multifunctional Voltage Mode Fractional Order Filters using a Single CFOA

2020 ◽  
Vol 9 (4) ◽  
pp. 687-691
Keyword(s):  
Fractional Order ◽  
Matlab Simulation ◽  
Current Feedback ◽  
Voltage Mode ◽  
Filter Structure ◽  
Low Pass ◽  
Band Pass ◽  
Simulation Results ◽  
Current Feedback Operational Amplifier ◽  
High Pass

A multifunction voltage mode fractional order filter structure is described using a single current feedback operational amplifier (CFOA). This configuration realizes three fractional order filters (FOFs) namely fractional order low pass (FOLP), fractional order band pass (FOBP) and fractional order high pass (FOHP) filters. The performance of the proposed structure has been verified through PSPICE and MATLAB simulation results using macro model of AD844 type CFOA.

HIGH INPUT AND LOW OUTPUT IMPEDANCE VOLTAGE-MODE LOWPASS, BANDPASS, AND HIGHPASS ACTIVE-R FILTER

2006 ◽  
Vol 15 (05) ◽  
pp. 671-678 ◽  
Author(s):  
NISAR AHMED SHAH ◽  
MOHAMMAD FAROOQ RATHER
Keyword(s):  
Operational Amplifiers ◽  
Output Impedance ◽  
High Input ◽  
Current Feedback ◽  
Feedback Amplifier ◽  
Current Feedback Amplifier ◽  
Component Matching ◽  
Single Input ◽  
Simulation Results ◽  
Theoretical Results

A novel filtering topology with a single input and three outputs (SITO) employing a single four-terminal current feedback amplifier (CFA) with an external compensation pin, such as AD844, two operational amplifiers (OAs), and as many resistors is presented. The circuit offers the features of simultaneous realization of lowpass (LP), bandpass (BP), and highpass (HP) filtering functions, free from component matching conditions, cascadability due to high input and low output impedances, orthogonal/independent adjustment of the filtering parameters, and low active and passive sensitivities. PSPICE simulation results are included to confirm the theoretical results.

scholarly journals Voltage-Mode Multifunction Biquadratic Filter with One Input and Six Outputs Using Two ICCIIs

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Hua-Pin Chen
Keyword(s):  
Theoretical Analysis ◽  
Second Generation ◽  
Current Conveyors ◽  
Matching Conditions ◽  
Voltage Mode ◽  
Low Pass ◽  
Biquadratic Filter ◽  
Component Matching ◽  
High Pass

A novel voltage-mode multifunction biquadratic filter with one input and six outputs is presented. The proposed circuit can realize inverting and noninverting low-pass, bandpass, and high-pass filters, simultaneously, by using two inverting second-generation current conveyors (ICCIIs), two grounded capacitors, and four resistors. Moreover, the proposed circuit offers the following attractive advantages: no requirements for component matching conditions, the use of only grounded capacitors, and low active and passive sensitivities. HSPICE and MATLAB simulations results are provided to demonstrate the theoretical analysis.

scholarly journals Multifunction Filter/Inverse Filter Configuration Employing CMOS CDBAs

2019 ◽  
Vol 8 (4) ◽  
pp. 8844-8853
Keyword(s):  
Active Filters ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
High Pass Filter ◽  
Low Pass ◽  
Multifunction Filter ◽  
Band Pass ◽  
High Pass ◽  
Circuit Configuration

A voltage-mode (VM) multifunction configuration for the realization of conventional active filters and inverse active filters (IAF) using two current differencing buffered amplifiers and six passive elements has been presented. The proposed structure can realize low pass filter/inverse low pass filter (LPF/ILPF), high pass filter /inverse high pass filter (HPF/IHPF), and band pass filter/ Inverse band pass filter (BPF/IBPF) from the same circuit topology by appropriate choice(s) of the branch impedance(s). PSPICE simulations with CMOS current differencing buffered amplifiers implemented in 0.18µm CMOS TSMC technology have been presented to establish the workability of the proposed circuit configuration.

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