Audio Jack Detection and Configuration with False Detection Prevention

NCX8193GU

The NCX8193 is an advanced audio jack accessory detector and controller. It supports 3-pole and 4-pole connectors and detects the insertion of plugs into jacks using a fault detection technique. An internal microphone bias line switch allows a codec or application processor to control the audio jack configuration. The device supports a broad variety of after-market headphones.

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Block Diagram

NCX8193 Block Diagram

NCX8193 Block Diagram
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Features

  • Fail-safe headset and headphone detection
  • Low-power standby mode
  • Click free switching
  • Low THD and noise microphone pass through channel
  • Send/End button detection
  • Low ON resistance: 0.9 Ω (typical) at a supply voltage of 2.8 V
  • ESD protection:
    • HBM JEDEC JDS-001 Class 3B exceeds 8 kV
  • Operating ambient temperature ‑40 °C to +85 °C

Target Applications

  • Headphones with integrated microphone and remote control buttons

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