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A regulated body-driven CMOS current mirror for low-voltage applications

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2 Author(s)
Xuguang Zhang ; Dept. of Electr. & Comput. Eng., Dalhousie Univ., Halifax, NS, Canada ; E. I. El-Masry

A CMOS current mirror (CM) based on the body-driven technique and active feedback scheme is presented. The proposed CM is immune to the threshold voltage limitation and offers much higher accuracy over wider current operating range than other body-driven CMs. The complete analysis of the input-output characteristics, system dc current transfer error, frequency, and noise performance is provided. By using a 1.5V/1V single power supply and 0.18-μm n-well process, SPECTRE simulation results validate the analytical results and the overall good performance in terms of wider input-output voltage swing, lower input resistance, and larger output resistance compared with the conventional high-swing cascode CM.

Published in:

IEEE Transactions on Circuits and Systems II: Express Briefs  (Volume:51 ,  Issue: 10 )