A Built-in-Self-Test Scheme for Segmented and Binary Weighted DACs

  • Authors:
  • Sunil Rafeeque K.P.;Vinita Vasudevan

  • Affiliations:
  • Department of Electrical Engineering, Indian Institute of Technology, Madras, Chennai, India 600036;Department of Electrical Engineering, Indian Institute of Technology, Madras, Chennai, India 600036

  • Venue:
  • Journal of Electronic Testing: Theory and Applications
  • Year:
  • 2004

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Abstract

This paper describes a new Built-In-Self-Test(BIST) scheme for estimation of static non-linearity errors in segmented and binary weighted digital to analog converters (DACs). The BIST scheme comprises of a hierarchy of tests including tests for non-monotonicity, checks to detect if the DNL/INL errors exceed 卤0.5 LSB and actual estimation of the DNL/INL. The BIST scheme has been experimentally verified on 10-bit segmented current steering DAC. The DAC, along with the additional circuits required for testing, was designed and fabricated using a 0.35 驴m process. Both simulation and experimental results are included in this paper. Errors estimated using the BIST scheme match well with measurements done on the fabricated device.