Analog Switches | FSA8039A

Audio Jack Detection and Configuration Switch with Moisture Sensing

Obsolete

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Overview

The FSA8039A is an audio jack switch for a normally open detect pin. The FSA8039A can work with 3-pole and 4-pole accessories. The FSA8039A features moisture sensing, which prevents false positive detection of accessories in the audio jack. The integrated MIC switch allows a processor to configure attached accessories. The architecture is designed to allow common third-party headphones to be used for listening to music from mobile handsets, personal media players, and portable peripheral devices.

  • Prevents False Detection of Accessories in the Audio Jack when Moisture is Present
  • Removes Audio Jack Pop & Click Caused by MIC Bias
  • Detects Audio Jack Accessories:
    • Standard Headphones
    • Send / End Button Presses
  • Integrates a MIC Switch for 4-Pole Configuration

    • PMP/MP3 Player
    • Mobile Handsets

    • Detection: Accessory Plug-In, 3-Pole or 4-Pole Audio Jack, Send / End Key Pressed, Moisture
    • Switch Type: MIC
    • VDD: 2.5 V to 4.5 V
    • VIO: 1.6 to VDD
    • THD (MIC): 0.01% Typical
    • ESD (Air Gap): 15 kV
    • Operating Temperature: -40°C to 85°C
    • Package: 10-Lead UMLP, 1.4 mm × 1.8 mm × 0.5 mm, 0.4 mm Pitch
    • Top Mark: NF

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    FSA8039AUMSX

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    Obsolete

    CAD Model

    Pb

    A

    H

    P

    UQFN-10

    523BD

    1

    260

    REEL

    5000

    N

    1

    1

    SPST

    30

    2

    2.5

    4.5

    Price N/A

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