Comparative study and design of new low voltage high performance current mirrors

Current mirror is one of the basic building blocks of analog VLSI systems. For high performance analog circuit applications, the accuracy and bandwidth are the most important parameters to determine the performance of the current mirror. This paper presents an efficient implementation of a CMOS current mirror suitable for low voltage applications. This scheme combines a shunt input feedback, a regulated cascade output and a differential amplifier to achieve low input resistance, high accuracy and high output resistance. A comparison of several architectures of this scheme based on different architecture of the amplifier is presented. The comparison includes: Input impedance, output impedance, accuracy, frequency response and settling time response. These schemes are validated with simulation in 0.18 mum CMOS TSMC of MOSIS.

[1]  Ramón González Carvajal,et al.  New output stage for low supply voltage, high-performance CMOS current mirrors , 2003, Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03..

[2]  Bernabé Linares-Barranco,et al.  The active-input regulated-cascode current mirror , 1994 .

[3]  Chi-Che Chen,et al.  Accurate current mirror with high output impedance , 2001, ICECS 2001. 8th IEEE International Conference on Electronics, Circuits and Systems (Cat. No.01EX483).

[4]  Kuo-Hsing Cheng,et al.  High accuracy current mirror with low settling time , 2003, 2003 46th Midwest Symposium on Circuits and Systems.

[5]  H.B. Gabbouj,et al.  Low supply voltage high speed CMOS current mirror for analog design , 2007, 2007 Internatonal Conference on Microelectronics.

[6]  A.J. Lopez-Martin,et al.  New compact implementation of a very high performance CMOS current mirror , 2005, 48th Midwest Symposium on Circuits and Systems, 2005..

[7]  J. Sauerbrey,et al.  A 0.6V multi-V/sub t/ current mirror differential OTA , 2005, International Symposium on Signals, Circuits and Systems, 2005. ISSCS 2005..

[8]  W. Guggenbuhl,et al.  A high-swing, high-impedance MOS cascode circuit , 1990 .

[9]  Edgar Sanchez-Sinencio,et al.  INVITED PAPER Special Section on Analog Circuits and Related Topics Low Voltage Analog Circuit Design Techniques: A Tutorial , 2000 .

[10]  E. Sánchez-Sinencio,et al.  Nonlinear effects in pseudo differential OTAs with CMFB , 2003, IEEE Trans. Circuits Syst. II Express Briefs.

[11]  Arun Ramachandran,et al.  Nonlinearity and noise modeling of operational transconductance amplifiers for continuous time analog filters , 2006 .

[12]  K. Tanno,et al.  Low voltage and low frequency current mirror using a two-MOS subthreshold op amp , 1996 .

[13]  H. L. Kwok,et al.  The application of current-mode circuits in the design of an A/D converter , 1998, Conference Proceedings. IEEE Canadian Conference on Electrical and Computer Engineering (Cat. No.98TH8341).

[14]  Sudhanshu Shekhar Jamuar,et al.  Low voltage analog circuit design techniques , 2002 .

[15]  Antonio Torralba,et al.  Low supply voltage high-performance CMOS current mirror with low input and output voltage requirements , 2004, IEEE Transactions on Circuits and Systems II: Express Briefs.

[16]  Vincenzo Peluso,et al.  900 mV differential class AB OTA for switched opamp applications , 1997 .

[17]  D. Schmitt-Landsiedel,et al.  A 0.6V Multi-VT Current Mirror Differential OTA , 2006 .