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Computerised Functional Tuning of Hybrid Integrated Active RC‐Filters

J.E. Karlskov Jensen (Institute of Circuit Theory and Telecommunication, Technical University of Denmark, Lyngby, Denmark The author is now with the GNT AUTOMATIC A/S, Department of Digital Communication Research and Development, Telephone Division, DK‐2860 Soeborg, Copenhagen, Denmark.)

Microelectronics International

ISSN: 1356-5362

Article publication date: 1 January 1986



High‐performance active RC‐filters realised as a thick or thin‐film hybrid integrated circuit present special fabrication problems. Due to manufacturing tolerances of the circuit elements a vast majority of the filter circuits will probably not meet the performance specifications. As a consequence, the filter networks must be tuned after fabrication. In this paper, two recent algorithms amenable to computer automated functional tuning are reviewed. The algorithms formulate the tuning problem as an optimisation problem which is solved for the tuning amounts required. Then the tuning resistors are adjusted by that amount. The tuning algorithms are tested by examining their performance in tuning an active RC‐filter.


Karlskov Jensen, J.E. (1986), "Computerised Functional Tuning of Hybrid Integrated Active RC‐Filters", Microelectronics International, Vol. 3 No. 1, pp. 25-27.




Copyright © 1986, MCB UP Limited

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