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This literature is subject to all applicable copyright laws and is not for resale in any manner.FSA8009 Audio Jack Send / End Detection with MIC / Video Switch March 2013 FSA8009 Audio Jack Send / End Detection with MIC / Video Switch Description Features The FSA8009 is an audio jack microphone / video switch for Accessory Plug-In 3- or 4-pole accessories with send / end (S/E) detection. In Detection 3- or 4-Pole Audio Jack addition to detection, the FSA8009 features an integrated Send / End Key Pressed microphone / video switch that allows the processor to Switch Type Microphone & Video configure the audio jack. The architecture is designed to allow common third-party headphones to be used for V 2.5 to 4.3 V DD listening to music from mobile handsets, personal media THD (MIC) 0.01% Typical players, and portable peripheral devices. ESD (Air Gap) 16 kV Determines When Send / End Button Key is Pressed Operating Temperature -40C to 85C Integrates a MIC / Video Switch for 4-Pole Configuration 10-Lead UMLP Package 1.4x1.8x0.5 mm, 0.4 mm Reduces Pop / Click Caused by Microphone Bias Pitch Top Mark KP Related Resources Ordering Information FSA8009UMX For samples and questions, please contact: Analog.Switch fairchildsemi.com. Applications FSA8009 Demonstration Board 3.5 mm and 2.5 mm Audio Jacks Cellular Phones, Smartphones MP3 and PMP Typical Application Baseband Processor V IO GPIO 2.8V V IO VDD 10K R VDD TTL Level Input EN Enable GPIO1 Open Drain Output S/E GPIO2 L R GND MIC TTL Level Input SEL GPIO3 + 1 2 3 4 REF - Audio CODEC R MIC MIC MIC Bias VID J MIC MIC C MIC L SPKR GND R SPKR Applications Processor Video Out Figure 1. Mobile Phone Example 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA8009 Rev. 1.0.2 16-32 16-32 NC, S/E Key