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MAX14579AE, MAX14579E

Low-Power Headset Detectors with SEND/END Button Support

Complete Audio Headset Jack Detection Solution
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Status Explanations for product status codes

Active: In Production.

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. In standby mode, microphone low-power pulsing is enabled to reduce supply current while waiting for a SEND/END button press event. Two open-drain outputs signal the host controller when an insertion/removal or SEND/END button press event occurs.

The MAX14579E/MAX14579AE manage jack insertion detection by monitoring a 3.5mm socket with a normally open jack insertion switch.

The devices are available in an 8-pin TDFN package, and are fully specified over the -40°C to +85°C extended temperature range.

Data Sheet

Download this datasheet in PDF formatDownload Rev 0 (PDF, 1.2MB)
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An evaluation board is available: MAX14579EEVKIT

Key Features

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

Applications/Uses

  • Cell Phones
  • e-Readers
  • Tablet PCs
   

Key Specifications:

Audio Jack Detectors
Part Number VSUPPLY
(V)
Low-Noise LDO Output
(V)
MIC Switch Detection Control Inputs Supply Current for MIC Detection
(µA)
Pop-Up Noise Elimination ESD Protection Features Oper. Temp.
(°C)
MAX14579E  2.5 to 5.5 2.2 Ground MIC Mode 1.3 Plug-in and Plug-out 15kV HBM on MIC and DETIN
3P/4P Detection
MIC Power Save Mode
Threshold Compliant 3-Button Detection
-40 to +85
See All Audio Jack Detectors (3)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.



More Information

Topmark Coding MAX14579AE
Topmark Coding MAX14579E

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Document Ref.: 19-5964 Rev 0; 2011-07-18
This page last modified: 2011-08-09