Abstract




 
   

IJE TRANSACTIONS A: Basics Vol. 31, No. 10 (October 2018) 1226-1234   

downloaded Downloaded: 0   viewed Viewed: 290

  STUDY AND ANALYSIS OF A SIMPLE SELF CASCODE RGC AMPLIFIER (TECHNICAL NOTE)
 
K. P and K. Anuradha
 
( Received: July 29, 2017 – Accepted: April 26, 2018 )
 
 

Abstract    This article proposed a simple self cascode RGC amplifier configuration to increase the gain and bandwidth. The cascode amplifier eliminates the miller capacitance between input and output and facilitates high gain, high input and output impedance with high bandwidth. However, the cascode amplifier requires relatively high supply voltage for proper operation and it decreases the output voltage swing by overdrive voltage. These issues are overcome by self cascode based RGC amplifier; even though it has low bandwidth due to the presence of one of its pole at low frequency. The bandwidth and output impedance of the conventional RGC has been increased by using a split length compensation technique. To improve the overall performance of the amplifier, introduced a simple self cascode RGC without using additional passive elements. The expression of gain and output impedance for the proposed amplifier is derived using small signal analysis. The calculated value of voltage gain for the projected circuit is 58.37 db which is more than the self cascode based RGC. The power dissipation of the proposed circuit is 1.071 µWatt and it has been compared with CS, Cascode, Self cascode and SC based cascode, RGC, SC based RGC amplifiers

 

Keywords    Self cascode, Regulated cascode, self cascode based regulated cascode, simple self cascode RGC

 

References    Zhao Xiao,Zhang Quisheng, Wang Yongquing, Deng Ming., "Transconductance and slew rate improvement technique for current recycling folded cascode amplifier."AEU-International Journal of Electronics and Communications, vol. 70 No.3 (2016): 326-330.Zhao, C., Liu, J., Shen, F., & Yi, Y. "Low power CMOS power amplifier design for RFID and the Internet of Things." Computers & Electrical Engineering.,Vol.52 (2016): 157-170.Zhao, X., Fang, H., Ling, T., & Xu, J "Low-voltage process-insensitive frequency compensation method for two-stage OTA with enhanced DC gain." AEU-International Journal of Electronics and Communications., vol.69No.3 (2015): 685-690.Wang, J., Zhu, Z., Liu, S., & Ding, R.. "A low-noise programmable gain amplifier with fully balanced differential difference amplifier and class-AB output stage." Microelectronics Journal.,Vol.64 (2017): 86-91.Comer, D J.,. Comer D T, and Craig S. P. "The utility of the composite cascode in analog CMOS design." International Journal of Electronics., Vol.91, No.8 (2004): 491-502.Prodanov, Vladimir I., and Michael M. G. "CMOS current mirrors with reduced input and output voltage requirements." Electronics letters ., Vol.32, No.2 (1996): 104-105.Aghnout, S., and N. Masoumi. "modeling of substrate noise impact on a single-ended cascode lna in a lightly doped substrate (research note)." International Journal of Engineering-Transactions A: Basics.,Vol.23, No.1 (2009): 23.Raj, N., Singh, A. K., & Gupta, A. K "Low voltage high performance bulk driven quasi-floating gate based self-biased cascode current mirror”, Microelectronics Journal., Vol.52 (2016): 124-133. Sedaghat, S. Babaei, G. Karimi, and R. Banitalebi. "A low voltage full-band folded cascoded uwb lna with feedback topology."International Journal of Engineering-Transactions A: Basics., Vol.28,No.1 (2014): 66.Xie, X., Schneider, M. C., Sánchez-Sinencio, E., & Embabi, S. H. K "Sound design of low power nested transconductance capacitance compensation amplifiers."Electronics Letters.,Vol.35, No.12 (1999): 956-958.Kaur, J., Prakash, N., & Rajput, S. S.,"A Low Voltage High Performance Self Cascode Current Mirror." International Journal of Electrical, Computer, Energetic, Electronic and communication Engineering., Vol 2, No.5 (2008): 2008-05.Galal, A. I. A., Pokharel, R., Kanaya, H., & Yoshida, K. "High linearity technique for ultra-wideband low noise amplifier in 0.18 μm CMOS technology." AEU-International Journal of Electronics and Communications., Vol.66,No.1 (2012): 12-17.Chen, C. L., Hsieh, W. L., Lai, W. J., Chen, K. H., & Wang, C. S. .,"A high-speed and precise current sensing circuit with bulk control (CCB) technique." IEEE 15th International Conference on Electronics, Circuits and Systems, 2008. IEEE, (2008).Kundra, S., Soni, P., & Kundra, A., "Low power folded cascode OTA."International Journal of VLSI Design & Communication Systems., Vol.3,No.1 (2012): 127.Shekhar, S., Walling, J. S., & Allstot, D. J., "Bandwidth extension techniques for CMOS amplifiers." IEEE Journal of Solid-State Circuits., Vol.41, No.11 (2006): 2424-2439.





International Journal of Engineering
E-mail: office@ije.ir
Web Site: http://www.ije.ir