Design and analysis of high Transconductance Current Follower Transconductance Amplifier (CFTA) and its applications

A high transconductance Current Follower Transconductance Amplifier (CFTA) is proposed in this paper. The proposed CFTA consists of current follower and transconductance stage with NMOS cross-coupling to enhance the transconductance. The NMOS cross coupling stage forms negative transconductance which results in higher transconductance and wider tuning range without affecting its output swing and bandwidth performance. The proposed CFTA operates at ±0.6 V supply voltage, provides 8.5 mS transconductance and dissipates 1.7 mW power. To verify the high performance of proposed CFTA, a current mode quadrature oscillator and biquad filter have been designed and simulated. Cadence virtuoso schematic composer has been used to verify the performance of proposed CFTA and its applications with TSMC 0.18 µm technology parameters.

[1]  Jiun-Wei Horng.  Current conveyors based allpass filters and quadrature oscillators employing grounded capacitors and resistors , 2005, Comput. Electr. Eng..

[2]  Maneesha Gupta,et al.  A transconductance boosted CMOS current differencing transconductance amplifier (TBCDTA) and its application , 2015 .

[3]  A. Lahiri.  Resistor-less mixed-mode quadrature sinusoidal oscillator , 2010 .

[4]  D. Biolek,et al.  Active Elements for Analog Signal Processing: Classification, Review, and New Proposals , 2008 .

[5]  Roman Sotner,et al.  Tunable oscillator using two CCTA-s and only grounded passive elements , 2010, 2010 9th International Conference on Environment and Electrical Engineering.

[6]  Kamil Vrba,et al.  Realisations of single-resistance-controlled quadrature oscillators using a generalised current follower transconductance amplifier and a unity-gain voltage-follower , 2010 .

[7]  Raj Senani,et al.  Sinusoidal oscillators with explicit current output employing current-feedback op-amps , 2010 .

[8]  Rajeshwari Pandey,et al.  Current Mode Full-Wave Rectifier Based on a Single MZC-CDTA , 2013 .

[9]  Wen-Yaw Chung,et al.  Quadrature oscillators using CCIIs , 2005 .

[10]  Firat Kaçar,et al.  A New mixed mode Full-wave Rectifier Realization with Current differencing transconductance amplifier , 2014, J. Circuits Syst. Comput..

[11]  Montree Siripruchyanun,et al.  Practical implementation of CCTA based on commercial CCII and OTA , 2009, 2008 International Symposium on Intelligent Signal Processing and Communications Systems.

[12]  Kamil Vrba,et al.  Novel mixed-mode KHN-equivalent filter using Z-copy CFTAs and grounded capacitors , 2010 .

[13]  J. Genoe,et al.  Compact Model for Organic Thin-Film Transistor , 2010, IEEE Electron Device Letters.

[14]  Winai Jaikla,et al.  A current-mode quadrature oscillator using a minimum number of active and passive components , 2011, Proceedings of 2011 IEEE International Conference on Vehicular Electronics and Safety.

[15]  Jan Jerabek,et al.  Current Gain Controlled CCTA and its Application in Quadrature Oscillator and Direct Frequency Modulator , 2011 .

[16]  Yong-An Li,et al.  Electronically tunable current-mode biquadratic filter and four-phase quadrature oscillator , 2014, Microelectron. J..

[17]  Worapong Tangsrirat,et al.  CDBA-Based Universal Biquad Filter and Quadrature Oscillator , 2008 .

[18]  W. Tangsrirat,et al.  Simple current-mode analog multiplier, divider, square-rooter and squarer based on CDTAs , 2011 .

[19]  Kamil Vrba,et al.  A Novel Current-Mode SIMO Type Universal Filter Using CFTAs , 2009 .

[20]  Y. Li.  Electronically Tunable Current-Mode Quadrature Oscillator Using Single MCDTA , 2010 .

[21]  Apinan Aurasopon,et al.  A Novel Electronically Controllable of Current-Mode Level Shifted Multicarrier PWM Based on MO-CFTA , 2013 .

[22]  Kamil Vrba,et al.  Generalized Design Method for Voltage- Controlled Current-Mode Multifunction Filters , 2008 .

[23]  Sudhanshu Maheshwari,et al.  Catalog of Realizations for DXCCII using Commercially Available ICs and Applications , 2012 .

[24]  W. Tangsrirat,et al.  Current-mode high-Q bandpass filter and mixed-mode quadrature oscillator using ZC-CFTAs and grounded capacitors , 2012 .

[25]  Phamorn Silapan,et al.  A Single MO-CFTA Based Electronically/Temperature Insensitive Current-mode Half-wave and Full-wave Rectifiers , 2013 .

[26]  Dalibor Biolek,et al.  Current-mode KHN filter employing current differencing transconductance amplifiers , 2006 .

[27]  Worapong Tangsrirat.  Novel current-mode and voltage-mode universal biquad filters using single CFTA , 2010 .

[28]  Montree Kumngern,et al.  CFTA-based electroniccally tunable quadrature sinusoidal oscillator , 2014, 2014 International Electrical Engineering Congress (iEECON).

[29]  Supawat Lawanwisut,et al.  New Gain Controllable Resistor-less Current-mode First Order Allpass Filter and its Application , 2012 .

[30]  W. Tangsrirat.  Current differencing transconductance amplifier-based current-mode four-phase quadrature oscillator , 2007 .

[31]  W. Tangsrirat,et al.  Current gain controlled CFTA and Its application to resistorless quadrature oscillator , 2012, 2012 9th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology.

[32]  Roman Sotner,et al.  Current mode tunable KHN filter based on controlled MO-CFTAs , 2009, 2009 3rd International Conference on Signals, Circuits and Systems (SCS).

[33]  W. Tangsrirat,et al.  Single-resistance-controlled quadrature oscillator using current differencing buffered amplifiers , 2008 .

[34]  Worapong Tangsrirat,et al.  Single-resistance-controlled quadrature oscillator and universal biquad filter using CFOAs , 2009 .

[35]  Montree Siripruchyanun,et al.  A practical implementation of CC-CFA based on commercially available ICs and its applications , 2009, 2009 6th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology.

[36]  Muhammad Taher Abuelma'atti,et al.  New two CFOA-based sinusoidal RC oscillators with buffered outlet , 2011 .

[37]  Punnavich Phatsornsiri,et al.  Tunable current-mode quadrature oscillator using CFTAs and grounded capacitors , 2015, 2015 12th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON).

[38]  J. Horng.  Current Differencing Buffered Amplifiers Based Single Resistance Controlled Quadrature Oscillator Employing Grounded Capacitors , 2002, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

[39]  Hakan Kuntman,et al.  Design of positive feedback driven current-mode amplifiers Z-Copy CDBA and CDTA, and filter applications , 2014 .

[40]  A. Lahiri,et al.  Voltage-mode quadrature sinusoidal oscillator with current tunable properties , 2010 .

[41]  Montree Siripruchyanun,et al.  Realization of electronically tunable voltage-mode/current-mode quadrature sinusoidal oscillator using ZC-CG-CDBA , 2011, Microelectron. J..

[42]  Hussain Alzaher,et al.  Implementation of reconfigurable nth-order filter based on CCII , 2013 .

[43]  Kamil Vrba,et al.  Current-controlled CFTA-based current-mode SITO universal filter and quadrature oscillator , 2010, 2010 International Conference on Applied Electronics.

[44]  D. Biolek,et al.  A Simple Current-mode Quadrature Oscillator Using only Single CDTA , 2008 .