A 0.8 V 191.9 nW DTMOS Current Mirror OTA in 0.18 μm CMOS Process
الموضوعات : Majlesi Journal of Telecommunication DevicesIman Khosrojerdi 1 , Amin Rezvani 2 , Reza Pourandoost 3
1 - Imam Reza International University
2 - Imam Reza International University
3 - sadjad institute of higher education
الکلمات المفتاحية: en,
ملخص المقالة :
In this paper a low-noise low-power CMOS operational transconductance amplifier (OTA) using dynamic threshold voltage MOSFET (DTMOS) technique is presented. The OTA is designed and simulated using 0.18 µm CMOS technology. The performed simulation results show an input-referred noise of 520.2 nV/√Hz at 1 mHz so reduces to 115.8 pV/√Hz at 1 Hz, and a power consumption of 191.9 nW under 5 pF loads. The dc open loop gain is 53.13 dB, a phase margin of 50o and a unity gain-bandwidth (UGB) of 572.9 kHz while operating at 0.8 V supply voltage. The proposed OTA is suitable for low noise and low-power application such as medical application
[1] F. Assaderaghi, D. Sinitsky, S. Parke, J. Bokor, P. K. Ko, and C. Hu, “A dynamic threshold voltage MOSFET (DTMOS) for ultra-low voltage operation,” in Int. Electron Devices Meeting, Techn. Digest, 1994, pp. 809–812.
[2] F. Assaderaghi, D. Sinitsky, S. Parke, J. Bokor, P.K. Ko and Hu. Chenming, “Dynamic Threshold-Voltage MOSFET (DTMOS) for Ultra-Low Voltage VLSI,” IEDM Trans, vol. 44 Mar 1997, pp. 414-422.
[3] F. Assaderaghi, “DTMOS: Its derivatives and variations, and their potential applications,” in Proc. 12th Int. Conf. Microelectron., 2000, pp. 9–10.
[4] H.F. Achigui, C.J.B. Fayomi and M. Sawan “A DTMOS-based 1 V op amp,” Proc. IEEE ICECS, vol. 1, pp. 252–255, Dec. 2003.
[5] H.F. Achigui, C.J.B. Fayomi and M. Sawan “A 1 V Low-Power Low-Noise DTMOS Based Class AB Op amp,” Proc. IEEE NEWCAS, pp. 307–310, 2005.
[6] H.F. Achigui, C.J.B. Fayomi and M. Sawan, “1 V DTMOS based class AB operational amplifier: Implementation and experimental results.” to appear, IEEE J. Solid-State Circuits, vol. 41, no. 11, Nov. 2006.
[7] H.F. Achigui, M. Sawan and C.J.B. Fayomi, “A 1 V Fully Differential, Fully Balanced Op amp: Implementation and Experimental Results,” Analog Integr Circ Sig Process (2007) 53:19–25.
[8] E. Kargaran, M. Sawan, Kh. Mafinezhad and H. Nabovati, “Design of 0.4V, 386nW OTA Using DTMOS Technique for Biomedical Applications” in Proc. 55th IEEE International Midwest Symposium on Circuits and Systems, 2012, pp. 270–273.
[9] A. suadet, T. Thongleam, A. Kanjanop, P. Singhanath, B. Hirunsing, W. Chuenta and V. Kasemsuwan, “A 0.8 V class-AB linear OTA using DTMOS for high-frequency applications” in Proc. ICMSAO, 2011, pp. 1-5.
[10] ZhiYuan Li, MingYan Yu, JianGuo Ma, “A Novel Input Stage Based on DTMOS for Low-Voltage Low-Noise Operational Amplifier” in Proc. APCCAS, 2006, pp. 1591-1594.
[11] S. Voldman, D. Hui, D. Young, R. Williams, D. Dreps, J. Howard, M. Sherony, F. Assaderaghi and G. Shahidi, “Silicon-on-insulator dynamic threshold ESD networks and active clamp circuitry” in Proc. Electrical Overstress/Electrostatic Discharge Symposium, 2000, pp. 29-40.
[12] B. Razavi, Design of Analog CMOS Integrated Circuits. New York, NY: McGraw-Hill, 2001.
[13] G. Raikos and S. Vlassis, “0.8 V bulk-driven operational amplifier,” Analog Integr Circ Sig Process (2010) 63:425–432.
