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Gain programmable current mirrors based on current steering

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4 Author(s)
J. Ramirez-Angulo ; Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA ; S. R. S. Garimella ; A. J. Lopez-Martin ; R. G. Carvajal

A new and compact scheme for a programmable current mirror is introduced. It features linear gain continuously adjustable in a wide range. In such a scheme differential pairs are used as current steering elements in order to provide gain programmability. All mirror transistors operate in strong inversion. Implementation of a linear OTA/multiplier is discussed. Experimental verification of the proposed scheme is provided.

Published in:

Electronics Letters  (Volume:42 ,  Issue: 10 )