A Novel Low Power Very Low Voltage High Performance Current Mirror

Authors: Khalil Monfaredi, Hassan Faraji Baghtash, Majid Abbasi

Abstract:

In this paper a novel high output impedance, low input impedance, wide bandwidth, very simple current mirror with input and output voltage requirements less than that of a simple current mirror is presented. These features are achieved with very simple structure avoiding extra large node impedances to ensure high bandwidth operation. The circuit's principle of operation is discussed and compared to simple and low voltage cascode (LVC) current mirrors. Such outstanding features of this current mirror as high output impedance ~384K, low input impedance~6.4, wide bandwidth~178MHz, low input voltage ~ 362mV, low output voltage ~ 38mV and low current transfer error ~4% (all at 50μA) makes it an outstanding choice for high performance applications. Simulation results in BSIM 0.35μm CMOS technology with HSPICE are given in comparison with simple, and LVC current mirrors to verify and validate the performance of the proposed current mirror.

Keywords: Analog circuits, Current mirror, high frequency, Low power, Low voltage.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1078613

References:

[1] E. Sackinger, and W. Guggenbuhl, "A high-swing, high-impedance MOS cascode circuit," IEEE J. Solid-State Circuits, vol. 25. pp. 289-298, Jan. 1990.
[2] P. J. Crawley, and G. W. Roberts, "High-swing MOS current mirror with arbitrarily high output resistance," Electron Lett. vol. 28, no. 4, pp. 361-363, Feb. 1992.
[3] T. Serrano and B. Linares-Barranco, "The active-input regulated cascode current mirror," IEEE Trans. Circuit Syst., vol. 41, pp. 464-467, June 1994.
[4] F. You, et al., "An Improved Tail Current Source for Low Voltage Applications," IEEE Journal of Solid-State Circuits, VOL. 32, NO. 8, August 1997, pp. 1173-1180.
[5] M. Di. Ciano, C. Marzocca, and A. Tauro, "A Low Voltage, High Output Impedance CMOS Current Source," ICSE2004, PRoc. 2004, Kuala Lumpur, Malaysia.
[6] John S. Prentice, "Feedback-controlled low voltage current sink/source," US Patent 6,172,556 B1, Jan. 9, 2001.
[7] George R. Spalding JR, "Current mirror," US Patent 2003/0038671 A1 Feb. 27, 2003.
[8] Charles C. Hanson, "Impedance enhancement circuit for CMOS low- voltage current source," US Patent 6,753,724 B2, Jun. 22, 2004.
[9] M. W. Murphy, E. I. El-Masry, and A. M. Elshurafa, "A High Compliance Input and Output Regulated Body-Driven Current Mirror for Deep-Submicron CMOS," in Microelectronics,ICM'06. International Conference on IEEE, 2006, pp. 13-16.
[10] Xuguang Zhang ,Ezz I. El-Masry, "A Regulated Body-Driven CMOS Current Mirror for Low-Voltage Applications," IEEE transactions on circuits and systems, vol. 51, pp. 571-577, Oct. 2004.
[11]
[11] Zhangming Zhu, Jianbin MO,Yintang Yang, "A Low Voltage Bulk-driving PMOS Cascode Current Mirror," Solid-State and Integrated-Circuit Technology,ICSICT. 9th International Conference on IEEE, pp. 2008-2011, 2008.
[12] Ramón González Carvajal, Jaime Ramírez-Angulo,Antonio J. López- Martín, Antonio Torralba, Juan Antonio Gómez Galán,Alfonso Carlosena, and Fernando Muñoz Chavero, "The Flipped Voltage Follower: A Useful Cell for Low-Voltage Low-Power Circuit Design," IEEE transactions on circuits and systems-I, vol. 52, no. 7, pp. 1276- 1291, Jul. 2005.
[13] Laura Sanchez-Gonzalez and Gladys Ducoudray-Acevedo, High Accuracy Self-Biasing Cascode Current Mirror, IEEE 2006.