Design and Analysis of Gain Boosted Recycling Folded Cascode OTA

In this paper, a low Power, Gain Boosted Recycling Folded Cascode Operational Transconductance Amplifier (GB-RFC OTA) is described. The proposed GB-RFC OTA is designed using 130nm CMOS technology and achieves enhanced gain, unity gain bandwidth and slew rate with the low Power budget. The proposed circuit operates on 1V supply voltage and 200 μA bias current and consumes a power of 798μW.The GB-RFC has about 24dB higher gain and 37MHz higher unity Gain Bandwidth (GBW) compare to Double Recycling Folded cascode OTA (DRFC). General Terms Unity Gain Bandwidth, Gain, Slew Rate, Phase Margin, Transconductance.

[1]  Pui-In Mak,et al.  Double recycling technique for folded-cascode OTA , 2012 .

[2]  Hao Min,et al.  Transconductance enhancement method for operational transconductance amplifiers , 2010 .

[3]  Erik L. McCarthy.  Design and Layout of a Telescopic Operational Transconductance Amplifier , 2003 .

[4]  M. Noormohammadi,et al.  New Operational Transconductance Amplifiers using current boosting , 2012, 2012 IEEE 55th International Midwest Symposium on Circuits and Systems (MWSCAS).

[5]  Behzad Razavi,et al.  Design of Analog CMOS Integrated Circuits , 1999 .

[6]  Priyanka Soni,et al.  Design of OTA Based Floating Inductor , 2011, 2011 International Conference on Devices and Communications (ICDeCom).

[8]  S. Hall,et al.  A wide linear range OTA-C filter for bionic ears , 2011, 2011 3rd Computer Science and Electronic Engineering Conference (CEEC).

[9]  Lisha Li,et al.  High Gain Low Power Operational Amplifier Design and Compensation Techniques , 2007 .

[10]  José Silva-Martínez,et al.  The Recycling Folded Cascode: A General Enhancement of the Folded Cascode Amplifier , 2009, IEEE Journal of Solid-State Circuits.

[11]  Swati Kundra,et al.  Low Power Folded Cascode OTA , 2012, VLSIC 2012.

[12]  Ashis Kumar Mal,et al.  A digitally programmable folded cascode OTA with variable load applications , 2011, 2011 IEEE Symposium on Industrial Electronics and Applications.

[13]  A. Ahmadpour,et al.  An Enhanced Bulk-Driven Folded-Cascode Amplifier in 0.18 µm CMOS Technology , 2012 .

[14]  Klaas Bult,et al.  The CMOS gain-boosting technique , 1991 .

[15]  Weidong Wang,et al.  A wide tunable range pseudo-differential OTA , 2011, 2011 International Conference on Electric Information and Control Engineering.

[16]  S. Rekha,et al.  A Low Power, Fully Differential Bulk Driven OTA in 180 nm CMOS T echnology , 2012 .