Analog Switches | FSA8069

Audio Jack IC Featureing Impedance and Moisture Detection

Obsolete

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Overview

The FSA8069 is an audio jack detection switch for 3.5 mm and 2.5 mm headsets. The FSA8069 features impedance detection and moisture sensing, which prevents false detection of accessories in the audio jack. An integrated MIC switch allows a processor to configure attached accessories. An LDO provides DC bias to microphone and remote key circuit in accessory. The FSA8069 detects seven headset impedance steps and supports configurable gain in the amplifier according to the type of load. The architecture is designed to allow headphones to be used for listening to music from mobile handsets, personal media players, and portable peripheral devices.

  • Detection:
  • Accessory Plug-In
  • Send / End Key Press
  • Impedance Detection
  • Prevents False Detection due to Moisture
  • VDD: 3.0 V to 4.5 V
  • VIO: 1.6 V to VDD
  • THD (MIC): 0.01% Typical
  • 15 kV Air Gap ESD
  • Detects 7 Steps of Headset Impedance
  • Integrates LDO for MIC Bias Circuit
  • MIC Switch Removes Audio Jack “Pop” and “Click” Caused by MIC Bias

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FSA8069UCX

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Obsolete

CAD Model

Pb

A

H

P

WLCSP-12

567RY

1

260

REEL

3000

N

1

1

SPST

-

1.5

3

4.5

Price N/A

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