A PROPOSAL OF LOW POWER MULTIPLE STATE ADC FOR ULTRASONIC DETECTION AND AUDIO BAND SIGNAL PROCESSING

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Other Title
  • 超音波検知，オーディオ帯信号処理用低消費電力マルチステートADCの提案

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Abstract

In recent years, the function of laptop and smart phones have been improving and increasing. In this study, I focused on human detection using ultrasonic waves with MEMS microphones. Therefore, I proposed a multiple state ADC that takes the appropriate mode for an audio band and ultrasonic band processing. When switching between the two modes, the number of active transistors is switched to reduce the current consumption. In addition, the circuit configuration is also changed by switching. As a result, SNR of 99.7dB for audio signal processing and low current consumption of 187uA for ultrasonic detection was achieved.

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Details 詳細情報について

  • CRID
    1390009225532483584
  • NII Article ID
    120007119648
  • NII Book ID
    AA12677220
  • DOI
    10.15002/00023927
  • HANDLE
    10114/00023927
  • ISSN
    21879923
  • Text Lang
    ja
  • Data Source
    • JaLC
    • IRDB
    • CiNii Articles
  • Abstract License Flag
    Allowed

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