Realization of a Class of Analog Signal Processing / Signal Generation Circuits: Novel Configurations Using Current Feedback Op-Amps

In this paper, we demonstrate that, when treated as 4-terminal building blocks, the current feedback op-amps (CFOA) or transimpedance op-amps are more versatile than the traditional 3-terminal op-amps and 3-terminal Current Conveyors (CC), In realising a class of analog signal processing / signal generation functions which include impedance converters / inverters, voltage-controlled impedances (both grounded and floating), active filters (both current mode and voltage mode) and single-resistance-controlled/voltage-controlled sinusoidal oscillators. Novel CFOA-based configurations are, therefore, derivable which provide features all of which are not possible with the available op-amp-based or CC-based reallsations. The workability of the new structures is substantiated by experimental results based upon the commercially available transimpedance op-amp AD844.

[1]  Chun-Ming Chang.  Novel current-conveyor-based single-resistance-controlled/voltage-controlled oscillator employing grounded resistors and capacitors , 1994 .

[2]  Jacqueline L. Glover.  Lossless ungrounded inductor realisation , 1976 .

[3]  Raj Senani,et al.  Canonic Synthetic Floating-Inductance Circuits Employing Only a Single Component-Matching Condition , 1981 .

[4]  Shen-Iuan Liu.  Universal filter using two current-feedback amplifiers , 1995 .

[5]  Leonard T. Bruton,et al.  Network Transfer Functions Using the Concept of Frequency-Dependent Negative Resistance , 1969 .

[6]  Shen-Iuan Liu,et al.  Multiphase sinusoidal oscillator using the CFOA pole , 1995 .

[7]  Raj Senani,et al.  Realization of voltage-controlled impedances , 1991 .

[8]  Vinod Kumar Singh,et al.  Single-element-controlled sinusoidal oscillator employing single current conveyor IC , 1992 .

[9]  Derek F. Bowers.  The so-called current-feedback operational amplifier-technological breakthrough or engineering curiosity? , 1993, 1993 IEEE International Symposium on Circuits and Systems.

[10]  Chun-Ming Chang.  Novel universal current-mode filter with single input and three outputs using only five current conveyors , 1993 .

[11]  Christofer Toumazou,et al.  Extending voltage-mode op amps to current-mode performance , 1990 .

[12]  Chun-Ming Chang,et al.  Voltage-mode notch, lowpass and bandpass filter using current-feedback amplifiers , 1994 .

[13]  G. Deboo,et al.  Application of a Gyrator-Type Circuit to Realize Ungrounded Inductors , 1967, IEEE Transactions on Circuit Theory.

[14]  Cheng-Chieh Chang,et al.  Active-R sinusoidal oscillators using the CFA pole , 1994 .

[15]  Anwar A. Khan,et al.  An improved current-mode instrumentation amplifier with bandwidth independent of gain , 1995 .

[16]  Christofer Toumazou,et al.  The active-R filter technique applied to current-feedback op-amps , 1995, Proceedings of ISCAS'95 - International Symposium on Circuits and Systems.

[17]  Raj Senani.  Novel lossless synthetic floating inductor employing a grounded capacitor , 1982 .

[18]  Andreas Antoniou,et al.  Gyrators using operational amplifiers , 1967 .

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

[20]  Raj Senani.  Realisation of linear voltage-controlled resistance in floating form , 1994 .

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

[22]  Steven O. Smith,et al.  The good, the bad and the ugly: current feedback-technical contributions and limitations , 1993, 1993 IEEE International Symposium on Circuits and Systems.

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

[24]  Shen-Iuan Liu,et al.  Realisation of analogue divider using current feedback amplifiers , 1995 .

[25]  Yuh-Shyan Hwang,et al.  CFA-based universal filter deduced from a Mason graph , 1994 .

[26]  Raj Senani,et al.  Minimal realisations of a class of operational-mirrored-amplifier-based floating impedances , 1994 .

[27]  A. Fabre.  Insensitive voltage-mode and current-mode filters from transimpedance opamps , 1995 .

[28]  A. Carlosena,et al.  Resistively variable capacitors using general impedance convertors , 1992 .

[29]  Santiago Celma,et al.  Current feedback amplifiers based sinusoidal oscillators , 1994, Proceedings of IEEE International Symposium on Circuits and Systems - ISCAS '94.

[30]  Raj Senani,et al.  New current-mode biquad filter , 1992 .

[31]  D. F. Bowers,et al.  A comprehensive simulation macromodel for 'current feedback' operational amplifiers , 1990 .

[32]  S. Webb,et al.  Applications of a commercially available current conveyor , 1991 .

[33]  Shen-Iuan Liu.  High input impedance filters with low component spread using current-feedback amplifiers , 1995 .

[34]  Alain Fabre,et al.  Gyrator Implementation from Commercially Available Transimpedance Operational Amplifiers , 1992 .

[35]  Alain Fabre.  Insensitive voltage-mode and current-mode filters from commercially available transimpedance opamps , 1993 .

[36]  Erik Bruun.  CMOS technology and current-feedback op-amps , 1993, 1993 IEEE International Symposium on Circuits and Systems.

[37]  Raj Senani,et al.  Versatile voltage-controlled impedance configuration , 1994 .

[38]  Shen-Iuan Liu,et al.  Sinusoidal oscillators with single element control using a current-feedback amplifier , 1994 .

[39]  Raj Senani,et al.  Realisation of single-resistance-controlled lossless floating inductance , 1978 .

[40]  K. Smith,et al.  A second-generation current conveyor and its applications , 1970, IEEE Transactions on Circuit Theory.

[41]  S. I. Liu,et al.  New current-feedback amplifier-based universal biquadratic filter , 1995 .

[42]  Sergio Franco.  Analytical foundations of current-feedback amplifiers , 1993, 1993 IEEE International Symposium on Circuits and Systems.

[43]  R. Daniels.  Gyrators, Negative Impedance Converters, and Related Circuits , 1969 .

[44]  Raj Senani,et al.  New canonic single-resistance-controlled sinusoidal oscillator using a single current conveyor , 1979 .

[45]  A. Carlosena,et al.  Approach to the synthesis of canonic RC-active oscillators using CCII , 1994 .

[46]  Christofer Toumazou,et al.  Current-feedback versus voltage feedback amplifiers: history, insight and relationships , 1993, 1993 IEEE International Symposium on Circuits and Systems.