Description

A dual-channel directional digital hearing aid (DHA) front-end using a fully differential difference amplifier (FDDA) based Microphone interface circuit (MIC) for a capacitive Micro Electro Mechanical Systems

A dual-channel directional digital hearing aid (DHA) front-end using a fully differential difference amplifier (FDDA) based Microphone interface circuit (MIC) for a capacitive Micro Electro Mechanical Systems (MEMS) microphones and an adaptive-power analog font end (AFE) is presented. The Microphone interface circuit based on FDDA converts the capacitance variations into voltage signal, achieves a noise of 32 dB SPL (sound pressure level) and an SNR of 72 dB, additionally it also performs single to differential conversion allowing for fully differential analog signal chain.

Reuse Permissions
  • 6.13 MB application/pdf

    Download count: 0

    Details

    Contributors
    Date Created
    • 2011
    Resource Type
  • Text
  • Collections this item is in
    Note
    • Partial requirement for: Ph. D., Arizona State University, 2011
      Note type
      thesis
    • Includes bibliographical references (p. 83-85)
      Note type
      bibliography
    • Field of study: Electrical engineering

    Citation and reuse

    Statement of Responsibility

    by Syed Roomi Naqvi

    Machine-readable links