ABILBO: Analog BuILt-in Block Observer

  • Authors:
  • Marcelo Lubaszewski;Salvador Mir;Leandro Pulz

  • Affiliations:
  • DELET/UFRGS, Av. Osvaldo Aranha esq. Sarmento Leite, 103, 90035-190 Porto Alegre RS, BRAZIL;CNM (CSIC), Seville, Spain and TIMA Laboratory, 46, avenue Félix Viallet, 38031 Grenoble Cedex, FRANCE;DELET/UFRGS, Av. Osvaldo Aranha esq. Sarmento Leite, 103, 90035-190 Porto Alegre RS, BRAZIL

  • Venue:
  • Proceedings of the 1996 IEEE/ACM international conference on Computer-aided design
  • Year:
  • 1997

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Abstract

This paper presents a novel multifunctional test structure called Analog BuILt-in Block Observer (ABILBO). This structure is based on analog integrators and achieves analog scan, test frequency generation and test response compaction. A high fault coverage was obtained by using a discrete switched-capacitor ABILBO for testing a biquad filter. The ABILBO area overhead and performance penalty can be very low if functional and testing circuitry are shared. This is typically the case of high order filters based on a cascade of biquads.