Voltage feedback v/s Current feedback operational amplifier using BJT and CMOS

2013 ◽  
Vol 2 (2) ◽  
pp. 9-16
Author(s):  
Arpit Kuthiala ◽  
Ankur Agarwal ◽  
Abhimanyu Gupta ◽  
Shruti Jain
Keyword(s):  
Operational Amplifier ◽  
Current Feedback ◽  
Voltage Feedback ◽  
Current Feedback Operational Amplifier

Current Feedback Operational Amplifiers: A Tutorial

1995 ◽  
Vol 32 (2) ◽  
pp. 108-123 ◽  
Author(s):  
B. L. Hart
Keyword(s):  
Operational Amplifier ◽  
Operational Amplifiers ◽  
Transient Responses ◽  
Current Feedback ◽  
Current Feedback Operational Amplifiers ◽  
Voltage Feedback ◽  
Current Feedback Operational Amplifier ◽  
A Current

Current feedback operational amplifiers: a tutorial In a didactic approach, the amplifying properties of an inverter stage using a current feedback operational amplifier (COA) and one using a voltage feedback operational amplifier (VOA) are compared. Then, following a discussion of COA modelling, the frequency and transient responses of a COA non-inverter stage are analysed.

scholarly journals Low-Voltage CMOS Current Feedback Operational Amplifier and Its Application

ETRI Journal ◽  
2007 ◽  
Vol 29 (2) ◽  
pp. 212-218 ◽  
Author(s):  
Soliman A. Mahmoud ◽  
Ahmed H. Madian ◽  
Ahmed M. Soliman
Keyword(s):  
Operational Amplifier ◽  
Low Voltage ◽  
Current Feedback ◽  
Current Feedback Operational Amplifier

scholarly journals A memristor-based chaotic-masking for analog spread-spectrum communication

2019 ◽  
Vol 14 (2) ◽  
pp. 966
Author(s):  
Muhammad Taher Abuelma’atti ◽  
Abdullah Yousef Alnafisa
Keyword(s):  
Spread Spectrum ◽  
Operational Amplifier ◽  
Spread Spectrum Communication ◽  
Current Feedback ◽  
Square Wave ◽  
Chaos Generator ◽  
Current Feedback Operational Amplifier

<span>This paper presents a simple chaotic-masking system. The system uses a chaos generator built around a grounded memristor. The memristor is emulated using the current-feedback operational amplifier (CFOA). At the sending end the signal is masked by adding chaos. At the receiving end the signal is recovered by subtracting the chaos. The performance of proposed system is investigated using sinusoidal and square wave signals.</span>

A Novel Floating/Grounded Meminductor Emulator

2020 ◽  
Vol 29 (15) ◽  
pp. 2050247 ◽  
Author(s):  
Hasan Sozen ◽  
Ugur Cam
Keyword(s):  
Hysteresis Loop ◽  
Operational Amplifier ◽  
Current Conveyors ◽  
Current Feedback ◽  
Transconductance Amplifier ◽  
Additional Control ◽  
Pinched Hysteresis Loop ◽  
Terminal Element ◽  
Current Feedback Operational Amplifier ◽  
Pinched Hysteresis

Meminductor is a nonlinear two-terminal element with storage energy and memory ability. To date, meminductor element is not available commercially as memristor and memcapacitor are. Therefore, it is of great significance to implement a meminductor emulator for breadboard experiment. In this paper, a flux-controlled floating/grounded meminductor emulator without a memristor is presented. It is built with commercially available off-the-shelf electronic devices. It consists of single operational transconductance amplifier (OTA), single multiplier, two second-generation current conveyors (CCIIs), single current-feedback operational amplifier (CFOA) and single operational amplifier. Using OTA device introduces an additional control parameter besides frequency and amplitude values of applied voltage to control the area of pinched hysteresis loop of meminductor. Mathematical model of proposed emulator circuit is given to describe the behavior of meminductor circuit. The breadboard experiment is performed using CA3080, AD844, AD633J and LM741 for OTA, CCII–CFOA, multiplier and operational amplifier, respectively. Simulation and experimental test results are given to verify the theoretical analyses. Frequency-dependent pinched hysteresis loop is maintained up to 5 kHz. The presented meminductor emulator tends to work as ordinary inductor for higher frequencies.

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