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SGM2549D
CTIA/OMTP Headset Ground Pole Switch Autonomous Pole Position Fixing
CTIA/OMTP Headset Ground Pole Switch Autonomous Pole Position Fixing
GENERAL DESCRIPTION

The SGM2549D senses ground pole and automatically selects switches accordingly in either the driver side or the headset side, with no need of any external control input. If a plug-in of the earphone is misplaced, it will keep SGM2549D trying periodically until a correct microphone pole is found. It consumes 1.3μA when a microphone is identified.

SGM2549D is available in Green UTDFN-1.5×2-6L and SOT-23-6 packages. It is rated over the -40 to +85 temperature range.

PIN CONFIGURATIONS

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FEATURES
  • Simple and Dedicated for One Purpose

  • SGMICRO’s Patented Circuit w/o IP Conflict

  • Autonomous Fixing CTIA/OMTP Ground Path

  • Keep MIC Low When a 3-Pole Headset Identified

  • Applicable to Both Driver Side and Earphone Side

  • Low Ground Path Impedance

  • Ground Path Voltage Drop Sensing

  • Powered by Local Source or External Parasitics

  • Ground Pin FM Antenna Path

  • -40 to +85 Operating Temperature Range

  • SGM2549D is Available in Green UTDFN-1.5×2-6L and SOT-23-6 Packages

APPLICATIONS

Phones/Pads/Computers/Media Players

Earphones/Phone-Jack Key/Phone-Jack Button

ORDERING INFORMATION
Part Number Status Package Pins Pb-Free Temp Range
SGM2549DYUDT6G/TR Production UTDFN-1.5×2-6L 6 Y -40℃ to +85℃ Samples
SGM2549DYN6G/TR Production SOT-23-6 6 Y -40℃ to +85℃ Samples
规格书暂未发布,请联系sales_china@sg-micro.com申请规格书。
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