Fairchild Semiconductor Enables Detection of Different Audio Accessories with a Single Device
November 08 2010 - 11:01AM
Business Wire
The traditional 3.5mm audio jack in cell phones, smartphones,
MP3 and personal media players (PMPs) is still the primary way for
users to connect headsets for speaking as well as headphones for
listening to music. To accommodate this efficiently, designers need
a device that can detect and configure the audio jack for different
accessories.
Fairchild Semiconductor (NYSE: FCS) developed the FSA8008 audio
jack detection and configuration switch as a one-chip audio jack
detector and switch for 3- or 4-pole accessories. While current
solutions use several discrete components (dual comparator, analog
switch and MOSFET) with software control to meet this need, the
FSA8008 integrates this functionality into a single device,
simplifying designs, and saving up to 70 percent of the board space
and up to 15 percent bill of material (BOM) costs.
In addition to detection, the FSA8008 is designed to allow
common, third-party headphones to be used for listening to music,
which is made possible due to an integrated microphone (MIC) switch
that allows the processor to configure the audio jack. The FSA8008
also eliminates leakage current when the MIC is plugged into the
jack.
Another key feature of this device is the ability to eliminate
the insertion pop and click noise on the MIC path when the jack
touches the MIC bias first. Additionally, the FSA8008 eliminates
the software work-around needed when the send/end key is pressed or
stuck.
The device features 15kV (air gap) and 12kV (HBM) ESD
protection, as well as 0.01 percent (typical) total harmonic
distortion (MIC). The FSA8008 is available in a 10-lead UMLP
package (1.4 x 1.8 x 0.5mm, 0.4mm pitch).
Fairchild Semiconductor enables engineers to differentiate their
designs by identifying market trends and developing solutions to
meet those needs. The FSA8008 leverages Fairchild’s expertise in
the development of solutions that advance mobile designs and enrich
the end-user experience.
Price (each, 1k pcs.): FSA8008 = $0.33
Availability: Samples available now
Delivery: 8-12 weeks ARO
Contact Information:
To contact Fairchild Semiconductor about this product, please go
to: http://www.fairchildsemi.com/cf/sales_contacts/.
For information on other products, design tools and sales
contacts, please visit: http://www.fairchildsemi.com.
Note to Editor: For a datasheet in PDF format, please go
to:
http://www.fairchildsemi.com/ds/FS/FSA8008.pdf
About Fairchild Semiconductor:
Fairchild Semiconductor (NYSE: FCS) – global presence, local
support, smart ideas. Fairchild delivers energy-efficient,
easy-to-use and value-added semiconductor solutions for power and
mobile designs. We help our customers differentiate their products
and solve difficult technical challenges with our expertise in
power and signal path products. Please contact us on the web at
www.fairchildsemi.com.
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