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A new current mirror layout technique for improved matching characteristics

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3 Author(s)
Mao-Feng Lan ; Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA ; Tammineedi, A. ; Geiger, R.

This paper proposes a new current mirror layout technique to improve matching characteristics in the presence of parameter gradient. Effects of threshold gradients across a mirror on the matching characteristics of current mirrors are discussed. New and the existing layouts are compared with computer simulations for threshold voltage gradients at all angles across the active area. Results show a significant improvement in matching characteristics of the proposed structures over what is achievable with existing layout techniques

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Circuits and Systems, 1999. 42nd Midwest Symposium on  (Volume:2 )

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