Reduce design cycle, simplify design, and reduce installation space.

Designers face the challenge of two audio configuration jack standards – the Open Mobile Terminal Platform (OMTP) L/R/M/G and Cellular Telephone Industries Association (CTIA) L/R/G/M jack pin map standards for the 3.5mm audio jack. Due to the different jack pin maps, designers must choose to support one standard or rely on more complex designs to support both.
To address this issue, Fairchild Semiconductor (NYSE:FCS) has added the FSA8049 MIC/GND crosspoint switch, which complies with the two-audio jack configuration standard and a portfolio of high-performance analog mobile audio products. This product detects the positions of the ground (GND) and the microphone (MIC) on the audio plug and automatically connects them appropriately. This allows end users to use and ensure proper operation of accessories with different audio pole configurations, such as headsets. For more information and to order samples, please visit the link below. http://www.fairchildsemi.com/pf/FS/FSA8049.html

Features and Advantages

• The ability to detect two different audio jack configurations and connect appropriately to each standard enables the use of all existing headsets on the new device without the need for manual configuration.

• Automatically connects GND and MIC to the audio jack.

• 3-pole or 4-pole audio accessory detection capability

• Small mounting space, the 9-ball WLCSP 3x3 array reduces mounting space.

• Suitable for use with mobile phones, smartphones, tablets, and laptops