Two-wire Interface for Digital Microphones

Wouter Groothedde (Inventor), Eric A.M. Klumperink (Inventor), Bram Nauta (Inventor), Rudolphe Gustave Hubertus Eschauzier (Inventor), Nico van Rijn (Inventor)

    Research output: Patent

    23 Downloads (Pure)

    Abstract

    A two-wire interface for a digital microphone circuit includes a power line and a ground line. The interface utilizes the ground line as a "voltage active line" to transmit both clock and data signals between the digital microphone circuit and a receiving circuit. The digital microphone circuit detects the clock signal on the voltage active line and uses the detected clock signal to operate an ADC to provide digital data. The digital data is used to selectively drive current back to the receiving circuit over the voltage active line. The receiving circuit detects the transmitted data by monitoring the voltage associated with a line termination. The impedance associated with the line termination is switched by the receiver circuit to modulate the clock signal on the voltage active line.
    Original languageUndefined
    Patent numberUS20030465514
    Priority date18/06/03
    Publication statusPublished - 18 Jun 2003

    Keywords

    • EWI-14452
    • METIS-224247
    • IR-68230

    Cite this

    Groothedde, W., Klumperink, E. A. M., Nauta, B., Eschauzier, R. G. H., & van Rijn, N. (2003). Two-wire Interface for Digital Microphones. (Patent No. US20030465514).
    Groothedde, Wouter (Inventor) ; Klumperink, Eric A.M. (Inventor) ; Nauta, Bram (Inventor) ; Eschauzier, Rudolphe Gustave Hubertus (Inventor) ; van Rijn, Nico (Inventor). / Two-wire Interface for Digital Microphones. Patent No.: US20030465514.
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    title = "Two-wire Interface for Digital Microphones",
    abstract = "A two-wire interface for a digital microphone circuit includes a power line and a ground line. The interface utilizes the ground line as a {"}voltage active line{"} to transmit both clock and data signals between the digital microphone circuit and a receiving circuit. The digital microphone circuit detects the clock signal on the voltage active line and uses the detected clock signal to operate an ADC to provide digital data. The digital data is used to selectively drive current back to the receiving circuit over the voltage active line. The receiving circuit detects the transmitted data by monitoring the voltage associated with a line termination. The impedance associated with the line termination is switched by the receiver circuit to modulate the clock signal on the voltage active line.",
    keywords = "EWI-14452, METIS-224247, IR-68230",
    author = "Wouter Groothedde and Klumperink, {Eric A.M.} and Bram Nauta and Eschauzier, {Rudolphe Gustave Hubertus} and {van Rijn}, Nico",
    year = "2003",
    month = "6",
    day = "18",
    language = "Undefined",
    type = "Patent",
    note = "US20030465514",

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    Groothedde, W, Klumperink, EAM, Nauta, B, Eschauzier, RGH & van Rijn, N 2003, Two-wire Interface for Digital Microphones, Patent No. US20030465514.

    Two-wire Interface for Digital Microphones. / Groothedde, Wouter (Inventor); Klumperink, Eric A.M. (Inventor); Nauta, Bram (Inventor); Eschauzier, Rudolphe Gustave Hubertus (Inventor); van Rijn, Nico (Inventor).

    Patent No.: US20030465514.

    Research output: Patent

    TY - PAT

    T1 - Two-wire Interface for Digital Microphones

    AU - Groothedde, Wouter

    AU - Klumperink, Eric A.M.

    AU - Nauta, Bram

    AU - Eschauzier, Rudolphe Gustave Hubertus

    AU - van Rijn, Nico

    PY - 2003/6/18

    Y1 - 2003/6/18

    N2 - A two-wire interface for a digital microphone circuit includes a power line and a ground line. The interface utilizes the ground line as a "voltage active line" to transmit both clock and data signals between the digital microphone circuit and a receiving circuit. The digital microphone circuit detects the clock signal on the voltage active line and uses the detected clock signal to operate an ADC to provide digital data. The digital data is used to selectively drive current back to the receiving circuit over the voltage active line. The receiving circuit detects the transmitted data by monitoring the voltage associated with a line termination. The impedance associated with the line termination is switched by the receiver circuit to modulate the clock signal on the voltage active line.

    AB - A two-wire interface for a digital microphone circuit includes a power line and a ground line. The interface utilizes the ground line as a "voltage active line" to transmit both clock and data signals between the digital microphone circuit and a receiving circuit. The digital microphone circuit detects the clock signal on the voltage active line and uses the detected clock signal to operate an ADC to provide digital data. The digital data is used to selectively drive current back to the receiving circuit over the voltage active line. The receiving circuit detects the transmitted data by monitoring the voltage associated with a line termination. The impedance associated with the line termination is switched by the receiver circuit to modulate the clock signal on the voltage active line.

    KW - EWI-14452

    KW - METIS-224247

    KW - IR-68230

    M3 - Patent

    M1 - US20030465514

    ER -

    Groothedde W, Klumperink EAM, Nauta B, Eschauzier RGH, van Rijn N, inventors. Two-wire Interface for Digital Microphones. US20030465514. 2003 Jun 18.