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Technical content

Features

Detection Audio Plug GND & MIC Polarity VDD 2.5 to 4.4V THD (MIC) 0.002% Typical ESD (IEC 61000-4-2) (Air Gap) 15kV Operating Temperature -40°C to 85°C Package 9-Ball WLCSP 3x3 Array, 0.4mm Terminal Pitch, 250µm Ball Top Mark M3

Applications

 Cellular Phones, Smart Phones  MP3 and Portable Multimedia Player

Description

The FSA8049 is an audio jack detection switch for 3- or 4-pole accessories. The FSA8049 detects the locations of ground (GND) and microphone (MIC) poles on the audio plug and automatically routes them to the appropriate connections. This allows the end user to plug accessories, such as headsets with different audio pole configurations, into the mobile device and have them operate correctly.  Detects 3- or 4-pole audio accessories  Detects polarity of GND and MIC on 4-pole plugs  Automatically routes GND and MIC to audio jack terminals Related Resources  For evaluation boards and questions, please contact: Analog.Switch@fairchildsemi.com. Typical Application Figure 1. Mobile Phone Example

© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA8049 • Rev. 1.0.1 7 FSA8049 — Audio Jack Detection and Configuration, MIC/GND Cross point Switch Physical Dimensions Figure 6. 9-Ball, Wafer-Level Chip-Scale Packag e (WLCSP), 3x3 Array, 0.4mm Pitch, 250µm Ball http://www.fairchildsemi.com/packaging/.

Ordering Information

FSA8049UCX -40 to +85°C M3 9-Ball, Wafer-Level Chip-Scale Package 0.03 C B A 0.03 C 0.208±0.021 0.378±0.018 D C 0.06 C 0.05 C PIN A1 INDEX AREA NOTES: A. NO JEDEC REGISTRATION APPLIES. B. DIMENSIONS ARE IN MILLIMETERS. C. DIMENSIONS AND TOLERANCE PER ASMEY14.5M, 1994. D. DATUM C IS DEFINED BY THE SPHERICAL CROWNS OF THE BALLS. E. PACKAGE NOMINAL HEIGHT IS 586 MICRONS ±39 MICRONS (547-625 MICRONS). F. FOR DIMENSIONS D, E, X, AND Y SEE PRODUCT DATASHEET. G. DRAWING FILNAME: MKT-UC009ABrev2 F F E E D A1 Ø0.20 Cu Pad Ø0.30 Solder Mask 0.40 0.40 SIDE VIEWS Ø0.260±0.020 9X0.40 0.40 (X)±0.018 (Y)±0.018 A B C 123 BOTTOM VIEW TOP VIEW 0.625 0.547 SEATING PLANE LAND PATTERN RECOMMENDATION (NSMD PAD TYPE)

© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA8049 • Rev. 1.0.1 8 FSA8049 — Audio Jack Detection and Configuration, MIC/GND Cross point Switch

© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA8049 • Rev. 1.0.1 9 FSA8049 — Audio Jack Detection and Configuration, MIC/GND Cross point Switch

© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA8049 • Rev. 1.0.1 10 FSA8049 — Audio Jack Detection and Configuration, MIC/GND Cross point Switch