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Yield improvement of a large area magnetic field sensor array using redundancy schemes

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2 Author(s)
Audet, Y. ; Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada ; Chapman, G.H.

The circuit design of a large area magnetic field sensor array (LAMSA) is described. This prototype is developed for applications in magnetic field mapping and tactile sensor arrays. To enable the production of such a large sensor system, redundancy schemes are implemented and a laser interconnection post fabrication technique is used for fault repairs. The design restructurable capabilities rely on local redundancy schemes for the sensor grid and global redundancy schemes for the surrounding control circuits. Experimental results obtained on a laser restructurable subarray of magnetic field sensor cells are shown. A study of the robustness of the local sensor grid redundancy schemes is presented.

Published in:

Very Large Scale Integration (VLSI) Systems, IEEE Transactions on  (Volume:5 ,  Issue: 1 )

Date of Publication:

March 1997

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