Second-order predictive ADC using a capacitor array DAC

Riku Yonekawa, Yuji Inagaki, Eri Ioka, Yasuhide Takase, Yasuyuki Matsuya

Research output: Contribution to journalArticlepeer-review


The on-board microphone with MEMS technology as the condenser microphone is used widely for audio interfaces. We propose the second-order predictive ADC that converts the charge to the digital code directly, without the charge to voltage conversion circuit. In this paper, we show the performance of this ADC using the capacitor array DAC and the DEM method. By the simulation using BASIC programming language, we confirmed that the DEM method improves the SNR degradation.

Original languageEnglish
Pages (from-to)29-36
Number of pages8
JournalIEEJ Transactions on Electronics, Information and Systems
Issue number1
Publication statusPublished - 2018
Externally publishedYes


  • Amp-less
  • Capacitor array DAC
  • DEM
  • Predictive ADC

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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