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Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.FSA8069 Audio Jack IC Featuring Impedance and Moisture Detection February 2015 FSA8069 Audio Jack IC Featuring Impedance and Moisture Detection Description Features The FSA8069 is an audio jack detection switch for Detection: 3.5 mm and 2.5 mm headsets. The FSA8069 features Accessory Plug-In impedance detection and moisture sensing, which prevents false detection of accessories in the audio Send / End Key Press jack. An integrated MIC switch allows a processor to Impedance Detection configure attached accessories. An LDO provides DC bias to microphone and remote key circuit in accessory. Prevents False Detection due to Moisture The FSA8069 detects seven headset impedance steps V : 3.0 V to 4.5 V DD and supports configurable gain in the amplifier according to the type of load. The architecture is V : 1.6 V to V IO DD designed to allow headphones to be used for listening to THD (MIC): 0.01% Typical music from mobile handsets, personal media players, and portable peripheral devices. 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 Applications Any Device with 3.5 mm and 2.5 mm Audio Jack Cellular Phones, Smart Phones, and Tablets MP3, GPS, and PMP FSA8069 Processor 2 I C Impedance / Control / Moisture Detection Power MICBIAS Audio Jack LDO Audio Codec Figure 1. Block Diagram Ordering Information Operating Packing Part Number Top Mark Package Temperature Range Method (1) 12-Ball WLCSP, 1.415 mm x 1.615 mm, FSA8069UCX -40C to 85C MX Tape & Reel 0.4 mm Pitch Notes: 1. Includes backside lamination. 2014 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA8069 Rev. 1.3 - +