Bipolar Current Feedback Amplifier: Compensation Guidelines

The aim of the paper is to discuss in detail the compensation of the current feedback amplifier (CFOA). The approach is suitable for a pencil-and-paper compensation and takes into account both resistive and capacitive feedback. The frequency limitation inside the CFOA and due to a load capacitor are also considered. The feature of the CFOA which can be simply compensated for when it is configured as a differentiator is also exploited. To validate the proposed strategies, Spice simulations were performed on the fundamental CFOA topologies, and some of them are included and discussed in the paper.

[1]  Mohamad Adnan Al-Alaoui.  A stable differentiator with a controllable signal-to-noise ratio , 1988 .

[2]  Derek F. Bowers.  Applying 'Current Feedback' to Voltage Amplifiers , 1993 .

[3]  D. F. Bowers.  The Impact of New Architectures on the Ubiquitous Operational Amplifier , 1993 .

[4]  Christofer Toumazou,et al.  High frequency self-compensation of current-feedback devices , 1992, [Proceedings] 1992 IEEE International Symposium on Circuits and Systems.

[5]  Christofer Toumazou,et al.  Wideband and high gain current-feedback opamp , 1992 .

[6]  Shu-Park Chan,et al.  A composite approach for improving the DC performances of current-feedback amplifiers , 1992 .

[7]  Ahmed M. Soliman.  Applications of the current feedback operational amplifiers , 1996 .

[8]  Santiago Celma,et al.  Current feedback amplifier based sinusoidal oscillators , 1994 .

[9]  Muhammad Taher Abuelma'atti,et al.  Novel RC oscillators using the current-feedback operational amplifier , 1996 .

[10]  Erik Bruun,et al.  Feedback analysis of transimpedance operational amplifier circuits , 1993 .

[11]  Vinod Kumar Singh,et al.  Novel single-resistance-controlled-oscillator configuration using current feedback amplifiers , 1996 .

[12]  Christofer Toumazou,et al.  Analog amplifiers: classification and generalization , 1996 .

[13]  Christofer Toumazou,et al.  A theoretical study of the stability of high frequency current feedback op-amp integrators , 1996 .

[14]  John V. Wait,et al.  Introduction to operational amplifier theory and applications , 1975 .

[15]  M. Koen,et al.  Evolution of high-speed operational amplifier architectures , 1994, IEEE J. Solid State Circuits.

[16]  J. Bales.  A low-power, high-speed, current-feedback op-amp with a novel Class AB high current output stage , 1996 .

[17]  Brett Wilson,et al.  Constant bandwidth voltage amplification using current conveyors , 1988 .