MAX14579E:低功耗耳机检测器,支持SEND/END按键

完备的音频耳机插座检测方案

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.

关键特性
  • 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)
应用
  • 蜂窝电话
  • 电子书
  • 平板PC
数据手册DataSheet
语言下载文件备注
英文MAX14579AE-MAX14579E.pdfRev 0; 07/2011
关键参数
Part NumberVSUPPLY
(V)
Low-Noise LDO Output
(V)
MIC Switch DetectionControl InputsSupply Current for MIC Detection
(µA)
Pop-Up Noise EliminationESD ProtectionPackage/PinsOper. Temp.
(°C)
MAX14579E2.5 to 5.52.2GroundMIC Mode1.3Plug-in and Plug-out15kV HBM on MIC and DETINTDFN-EP/8-40 to +85
开发工具
质量和环境数据
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX14579EETA+生产中TDFN-EP,;8引脚;4.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX14579EETA+T生产中TDFN-EP,;8引脚;4.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX14579EETA+TW生产中TDFN-EP,;8引脚;4.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX14579AE-MAX14579E.pdf MAX14579E
MAX14579E.pdf MAX14579E