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High-Accuracy Current Mirror Using Adaptive Feedback and its Application to Voltage-to-Current Converter  

Cha, Hyeong-U (Dept.of Information Communication Engineering, Cheongju University)
Kim, Hak-Yun (Dept.of Information Communication Engineering, Cheongju University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.39, no.4, 2002 , pp. 93-103 More about this Journal
Abstract
A new current mirror for high-accuracy current-mode signal processing and integrated circuit design was proposed. The current mirror adopts the technique of an adaptive feedback to reduce the input impedance and the output stage of regulated cascode current mirror to increase the output impedance. Simulation results show that the current mirror has input impedance of 0.9Ω, the output impedance of 415 MΩ, and current gain of 0.96 at the supply voltage Vcc=5V. The power dissipation is 1.5㎽. In order to certify the applicability of the proposed current mirror, a voltage-to-current converter using the current mirror is designed. Simulation results show that the converter has good agreement with theoretical equation and has three times better conversion characteristics when compared with voltage-to-current converter using Wilson current mirror.
Keywords
current mirror; adaptive current feedback; voltage-to-current converter; current-mode; integrated circuit;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 P. M. Brown, Guid to Analog ASIC's, New York:Academic
2 A. S. Sedra and K. C. Smith, Microelectronic circuits, New York Oxford
3 C. Toumazou, F.J. Lidegey, D.G. Haigh, Analogue IC design:the current mode approach, ch. 13, London, U.K.:Peregrinus, 1990
4 R.L. Geiger, P.E. Allen, N.R. Strader, VLSI design techniques for analog and digital circuits, ch. 5, McGraw-Hill, 1990
5 D. G. Nairn, C.A.T. Salama, 'Algorithmic analogue/digital converter based on current mirrors', IEE Electronics Lett., Vol. 8, pp. 471-472, 1988
6 A. Zeki, H. Kuntman, 'Accurate and high output impedance current mirror suitable for CMOS current output stage', IEE Electronics Lett., Vol. 33, No. 12, pp. 1042-1043, 1997   DOI   ScienceOn
7 H.C. Yang, D.J. Allstot, 'An Active-Feedback Cascode Current Source', IEEE Trans. on Circuits and Systems, Vol. 37, No. 5, pp. 644-646, 1990   DOI   ScienceOn
8 E. Sackinger, W. Guggenbuhl, 'A high-swing, high impedance MOS cascode circuits', IEEE J. solid-state circuits, Vol. 25, No. 1, pp. 289-298, 1990   DOI   ScienceOn
9 D.G. Nairn, C.A.T. Salama, 'Current-mode Algorithmic Analog-to-Digital Converters', IEEE J. solid-state circuits, Vol. 25, No. 4, pp. 997-1003, Aug, 1990   DOI   ScienceOn
10 G. Palmisano, G. Palumbo, S. Pennisi, 'High linearity CMOS output stage', IEE Electronics Lett., Vol. 31, No. 10, pp. 789-790, 1995   DOI   ScienceOn
11 A. B. Grebene, Bipolar and MOS analog integrated circuit design, John Wiley & Sons, chap.7.9, 1984
12 R. L. Geiger, P. E. Allen, and N. R. Strader, VLSI design techniques for analog and digital circuits, McGraw-Hill, chap3.3.1, 1990
13 D. G. Nairn, C.A.T. Salama, 'High-resoultion current-mode A/D convertors using active current mirrors', IEE Electronics Lett., Vol. 24, No. 21, pp. 1331-1332, 1988   DOI   ScienceOn
14 차형우, 이장혁, 박회종, 이주찬, 정원섭, '고성능 전류 미러에 관한 연구', 대한전자공학회추계종합학술대회논문지, 23권 2호, pp. 145-148, 2000년 11월