A Dynamic Zoom ADC with 109-dB DR for Audio Applications

Burak Gönen, Fabio Sebastiano, Rui Quan, Robert van Veldhoven, Kofi A.A. Makinwa

Research output: Contribution to journalArticleScientificpeer-review

36 Citations (Scopus)
217 Downloads (Pure)

Abstract

This paper presents the first dynamic zoom ADC. Intended for audio applications, it achieves 109-dB DR, 106-dB signal-to-noise ratio, and 103-dB SNDR in a 20-kHz bandwidth, while dissipating only 1.12 mW. This translates into the state-of-the-art energy efficiency as expressed by a Schreier FoM of 181.5 dB. It also achieves the state-of-the-art area efficiency, occupying only 0.16 mm2 in the 0.16- μm CMOS. These advances are enabled by the use of concurrent fine and coarse conversions, dynamic error-correction techniques, and a dynamically biased inverter-based operational transconductance amplifier.

Original languageEnglish
Article number7887686
Pages (from-to)1542-1550
Number of pages9
JournalIEEE Journal of Solid State Circuits
Volume52
Issue number6
DOIs
Publication statusPublished - 2017

Keywords

  • Audio
  • compact ADC
  • delta sigma
  • discrete time
  • dynamic
  • dynamic range (DR)
  • hybrid ADC
  • precision
  • zoom ADC

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