Low-Voltage CMOS Current Feedback OperationalAmplifier and Its Application

ETRI Journal

关键词: all-pass filter;    variable gain amplifier;    low-voltage;    Current feedback op-amp;   

Others  :  1185581
DOI  :  10.4218/etrij.07.0106.0182

【 摘 要 】

A novel low-voltage CMOS current feedback operational amplifier (CFOA) is presented. This realization nearly allows rail-to-rail input/output operations. Also, it provides high driving current capabilities. The CFOA operates at supply voltages of ±0.75 V with a total standby current of 304 µA. The circuit exhibits a bandwidth better than 120 MHz and a current drive capability of 1 mA. An application of the CFOA to realize a new all-pass filter is given. PSpice simulation results using 0.25 µm CMOS technology parameters for the proposed CFOA and its application are given.

   

【 参考文献 】

• [1]C. Toumazu and J. Mahattanakul, "A Theoretical Study of the Stability of High-Frequency Current Feedback Op-Amp Integrators," IEEE Trans. Circuit Syst. I, vol. 43, 1996, pp. 2-12.
• [2]S.A. Mahmoud and A.M. Soliman, "Novel MOS-C Balanced-Input Balanced-Output Filter Using the Current Feedback Operational Amplifier," Int. J. Electron., vol. 84, 1998, pp. 479-485.
• [3]A.M. Soliman, "Applications of the Current Feedback Operational Amplifier," Analog Integrated Circuits Signal Processing, vol. 11, 1996, pp. 265-302.
• [4]A. Assi, M. Sawan, and J. Zhu, "An Offset Compensated and High-Gain CMOS Current Feedback Op-Amp," IEEE Trans. Circuits and Syst. I, vol. 45, no. 1, Jan. 1998, pp. 85-90.
• [5]A.M. Ismail and A.M. Soliman, "Novel CMOS Current Feedback Op-Amp Realization Suitable for High Frequency Applications," IEEE Trans. Circuit Syst. I, vol. 47, 2000, pp. 918-921.
• [6]S.A. Mahmoud, H.O. Elwan, and A.M. Soliman, "Low Voltage Rail to Rail CMOS Current Feedback Operational Amplifier and Its Applications for Analog VLSI," Anal. Int. Circuits Signal Processing, vol. 25, 2000, pp. 47-57.
• [7]R. Mita, G. Palumbo, and S. Pennisi, "Low-Voltage High-Drive CMOS Current Feedback Op-Amp," IEEE Trans. Circuit Syst.-II, vol. 52, 2005, pp. 317-321.
• [8]S.A. Mahmoud and A.M. Soliman, "New MOS-C Biquad Filter Using the Current Feedback Operational Amplifier," IEEE Trans. Circuit Syst.-I, vol. 46, Dec. 1999, pp. 1510-1512.
• [9]J. Bayard and M. Ayachi, "OTA- and CFOA-Based LC Sinusoidal Oscillators?Analysis of the Magnitude Stabilization Phenomenon," IEEE Trans. Circuit Syst.-I, vol. 49, Aug. 2002, pp. 1231-1236.
• [10]B.J. Maundy, I.G. Finvers, and P. Aronhime, "Alternative Realizations of CMOS Current-Feedback Amplifiers for Low-Voltage Applications," Anal. Int. Circuits Signal Processing, vol. 32, Dec. 2002, pp. 157-168.
• [11]K. Manetakis and C. Toumazou, "Current-Feedback Op Amp Suitable for CMOS VLSI Technology," Elect. Let., vol. 32,?no. 12,?June 1996, pp. 1090-1092.
• [12]J. Bales, "A Low-Power, High-Speed, Current-Feedback Op Amp with a Novel Class AB High Current Output Stage," IEEE J. Solid State Circuit, vol. 32, no. 9, Sep. 1997, pp. 1470-1474.
• [13]E. Bruun, "A Dual Current Feedback Op Amp in CMOS Current Conveyor," Electron. Lett., vol. 34, 1998, pp. 2368-2369.
• [14]A.M. Soliman, "Generation of Current Conveyor-Based All-Pass Filters from Op-Amp-Based Circuits," IEEE Trans. Circuit Syst.-II, vol. 44, Apr. 1997, pp. 324-330.