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MAX14579E - Low-Power Headset Detectors

Description

The MAX14579E/MAX14579AE provide a simple solution for detecting the insertion and managing the operation of a 3.5mm stereo headset with a microphone.

These devices integrate all circuitry required to detect SEND/ END button press events and generate required microphone bias voltages.

Features

  • S 3.5mm Jack Insertion Detection S Simple Interface: One Input/Two Open-Drain Outputs S Low-Power Microphone Mode S Low-Noise, High-PSRR Microphone Bias Generator S Click-and-Pop Suppression S High-ESD Protection on MIC and DETIN Inputs ±15kV Human Body Model (HBM) Cell Phones e-Readers Tablet PCs.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MAX14579E/MAX14579AE 19-5964; Rev 0; 06/11 EVAALVUAAILTAIOBNLEKIT Low-Power Headset Detectors with SEND/END Button Support General Description The MAX14579E/MAX14579AE provide a simple solution for detecting the insertion and managing the operation of a 3.5mm stereo headset with a microphone. These devices integrate all circuitry required to detect SEND/ END button press events and generate required microphone bias voltages. The devices are managed with only three GPIOs from the host controller to select between call mode and standby mode, and monitor the SEND/END and jack insertion status. In call mode, the low-noise LDO is enabled to provide DC bias to the externally preamplified microphone.
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