Abstract

This paper proposes a novel high-resolution delta-modulator with oversampling and noise-shaping suitable for industrial IoT systems. 'Inspired by' a SAR ADC, this architecture uses an integrator in the digital domain, instead of the usual SAR logic. Combining adaptive-step delta-modulation with the adopted low/medium-resolution DAC scheme, an energy efficient A/D converter architecture is proposed, presenting encouraging results in comparison with the reported SAR algorithms. Behavioral simulations demonstrate a dynamic performance of 88 dB of SNDR, corresponding to an ENOB of 14.3 bits, for a 1 MHz input signal bandwidth and using an oversampling-ratio of 64.

Original languageEnglish
Title of host publicationPRIME 2018 - 14th Conference on Ph.D. Research in Microelectronics and Electronics
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages33-36
Number of pages4
ISBN (Print)9781538653869
DOIs
Publication statusPublished - 8 Aug 2018
Event14th Conference on Ph.D. Research in Microelectronics and Electronics, PRIME 2018 - Prague, Czech Republic
Duration: 2 Jul 20185 Jul 2018

Conference

Conference14th Conference on Ph.D. Research in Microelectronics and Electronics, PRIME 2018
CountryCzech Republic
CityPrague
Period2/07/185/07/18

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Keywords

  • Delta modulation
  • High-resolution converters
  • Industrial IoT systems
  • Noise-shaping

Cite this

Correia, A., Barquinha, P., Marques, J., & Goes, J. (2018). A High-resolution Δ-Modulator ADC with Oversampling and Noise-shaping for IoT. In PRIME 2018 - 14th Conference on Ph.D. Research in Microelectronics and Electronics (pp. 33-36). [8430338] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PRIME.2018.8430338