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MAX14579AE

Part Number	MAX14579AE
Manufacturer	Maxim Integrated Products
Description	Low-Power Headset Detectors
Published	Feb 18, 2012
Detailed Description	MAX14579E/MAX14579AE 19-5964; Rev 0; 06/11 EVAALVUAAILTAIOBNLEKIT Low-Power Headset Detectors with SEND/END Button Sup...
Datasheet	MAX14579AE PDF File

Overview

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.
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 -40NC to +85NC extended temperature range.
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 Applications Ordering Information PART TEMP RANGE PIN-PACKAGE MAX14579EETA+ -40NC to +85NC 8 TDFN-EP* MAX14579AEETA+** -40NC to +85NC 8 TDFN-EP* +Denotes a lead(Pb)-free/RoHS compliant package.
*EP = Exposed pad.
**Future product—contact factory for availablity.
Typical Operating Circuit ADC 1µF 3.
3V MODE VCC CAP 3.
3V PROCESSOR 1MΩ MAX14579E SWD RES 3.
3V 1MΩ DETIN DET EP/GND MIC 0.
22µF 2.
2kΩ AUDIO AMPLIFIER MICROPHONE AMPLIFIER 0.
1µF 3.
5mm SOCKET 1...

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