A STAND-ALONE INTEGRATED TEST CORE FOR TIME AND FREQUENCY DOMAIN MEASUREMENTS

  • Authors:
  • Mohamed Hafed;Nazmy Abaskharoun;Gordon W. Robert

  • Affiliations:
  • -;-;-

  • Venue:
  • ITC '00 Proceedings of the 2000 IEEE International Test Conference
  • Year:
  • 2000

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Abstract

An area efficient and robust integrated test corefor mixed-signal circuits is described. The core consists ofa completely digital implementation, except for a simplereconstruction filter and a comparator. It is capable ofboth generating arbitrary band-limited waveforms (forexcitation purposes) and coherently digitizing arbitraryperiodic analog waveforms (for DSP-based test andmeasurement). A prototype IC was fabricated in a 3.3 V0.35 mm CMOS process. It was demonstrated to performvarious curve tracing, timing, and spectrum analysis tasksat a sampling frequency of 20 MHz (which was onlylimited by our experimental setup) while taking up an areaequivalent to only about five thousand standard-cell 2-input NAND gates.