Low-Voltage Highly Linear Floating Gate MOSFET Based Source Degenerated OTA And Its Applications

Rishikesh Pandey, Tanmay Dubey


The paper proposes a novel low-voltage highly linear floating gate MOSFET based source degenerated OTA. The low voltage operation of the proposed OTA is achieved by using floating gate MOSFETs as input transistors and the linearity is increased by using source degeneration linearization technique. The proposed OTA has low power supply requirement of ±0.6V, rail-to-rail input differential voltage range and wide bandwidth of 1.472 GHz. The applications of the proposed OTA such as active inductor, tunable resistors and filters are also proposed. Finally, the simulation results of the proposed circuits using typical parameters of UMC 0.18μm CMOS technology are depicted to confirm the theoretical analysis.

Full Text:



Karthikeyan S, Mortezapour S, Tammineedi A and Lee EK 2000 Low-voltage analog circuit design based on biased inverting opamp configuration. IEEE Trans on Cir and Sys. 47: 176-184.

Sanchez-Sinencio E and Andreou AG 1999 Low-voltage/low-power integrated circuits and systems: Low-voltage mixed-signal circuits. Chicago, USA: Wiley-IEEE Press.

Shouli Y and Sanchez-Sinencio E 2000 Low voltage analog circuit design techniques: A tutorial. IEICE Trans on Fundamentals of Elec Comm and Comp Sci. 83: 179-196.

Rajput SS and Jamuar SS 2002 Low voltage analog circuit design techniques. IEEE Circuits and Systems Magazine. 2: 24-42.

Angulo JR, Choi SC and Altamirano GG 1995 Low-voltage circuits building blocks using multiple-input floating-gate transistors. IEEE Trans on Cir and Sys. 42: 971-974.

Yin L, Embabi SHK and Sanchez-Sinencio E 1997 A floating-gate MOSFET D/A converter. IEEE International Symposium on Cir and Sys. pp. 409-412.

Pandey R and Gupta M 2010 FGMOS based voltage-controlled grounded resistor. Radioengineering Journal. 19: 455-459.

Gupta M and Pandey R 2010 FGMOS based voltage-controlled resistor and its applications. Microelectronics Journal. 41: 25-32.

Lee BW, Sheu BJ and Yang H 1991 Analog floating-gate synapses for general-purpose VLSI neural computation. IEEE Trans on Cir and Sys. 38: 654-658.

Gupta M and Pandey R 2011 Low-voltage FGMOS based analog building blocks. Microelectronics Journal. 42: 903-912.

Voorman H and Veenstra H 2000 Tunable high-frequency Gm-C filters. IEEE Journal of Solid State Circuits. 35: 1097-1108.

Sanchez-Sinencio E, Geiger RL and Nevarez-Lozano H 1998 Generation of continuous-time two integrator loop OTA filter structures. IEEE Trans on Cir and Sys. 35: 936-946.

Rezaei F and Azhari SJ 2011Ultra low voltage, high performance operational transconductance amplifier and its application in a tunable Gm-C filter. Microelectronics Journal. 42: 827-836.

Ohbuchi T and Matsumoto F 2013 A new design of a linear local-feedback MOS transconductor for low frequency applications. Analog Integrated Circuits and Signal Processing. 75: 257-266.

Kim T W and Kim B 2006 A 13-dB improved low-power CMOS RF programmable gain amplifier using differential circuit transconductance linearization for various terrestrial mobile D-TV applications. IEEE Journal of Solid-State Circuits. 41: 945-953.

Srinivasan V, Graham DW and Hasler P 2005 Floating-gates transistors for precision analog circuit design: an overview. Midwest Symp on Cir and Sys. pp. 71-74.

Masuoka F, Shirota R and Sakui K. 1991 Reviews and prospects of non-volatile semiconductor memories. IEICE Transactions on Electronics. 74: 868-874.

Villegas ER, Rueda A and Yufera A 2000 Low-voltage analog filters using floating-gate MOSFETs. European Solid-State Cir Conference. pp. 29-32.

Rodriguez-Villegas E 2006 Low power and low voltage circuit design with the FGMOS transistor. London, IET.

Pandey R and Gupta M 2010 FGMOS based tunable grounded resistor. Analog Integrated Circuits and Signal Processing. 65: 437-443.

Torrance RR, Viswanathan TR and Hanson JV 1985 CMOS voltage to current transducers. IEEE Trans on Cir and Sys. 32: 1097-1104.

Matsumoto F, Miyazawa T, Nakamura S and Noguchi Y 2009 Techniques for a low-voltage low-power linear MOS transconductor. International Symp on Intelligent Signal Processing and Comm Systems. pp. 1-4.

Martinez-Heredia J M and Torralba A 2011 Enhanced source-degenerated CMOS differential transconductor. Microelectronics Journal. 42: 396-402.

Abbasalizadeh S, Sheikhaei S and Forouzandeh B 2015 A 0.8‐V supply bulk‐driven operational transconductance amplifier and Gm‐C filter in 0.18 µm CMOS process. International Journal of Circuit Theory and Applications. 43:929-943.

Laguna M, Blas DC, Torralba A, Carvajal RG, Martin AL and Carlosena A 2004 A novel low-voltage low-power class-AB linear transconductor. Int Symp on Cir and Sys. pp. 725-728.

Demosthenous A and Panovic M 2005 Low-voltage MOS linear transconductor/squarer and four-quadrant multiplier for analog VLSI. IEEE Trans on Cir and Sys. 52: 1721-1731.

Kaewdang K and Surakampontorn W 2011 A balanced output CMOS OTA with wide linear current tunable range. AEU Int J of Elec and Comm 65: 728-733.

Lopez-Martin A J, Carlosena A, Ramirez-Ansulo J and Carvaial RG 2006 Rail-to-rail tunable CMOS VI converter. Int Symp on Cir and Sys. pp. 437- 440.

Suadet A and Kasemsuwan V 2011 A 0.5 V quasi-floating-gate (QFG) inverter-based class-AB gain-bandwidth independent amplifier. International Conference on Comp Applications and Industrial Electronics. pp. 245-249.

Farshidi E 2009 A low-voltage class-AB linear transconductance based on floating-gate MOS technology. European Conf on Cir Theory and Design. pp. 437-440.


  • There are currently no refbacks.

Copyright (c) 2018 Informacije MIDEM