Fairchild Semiconductor’s Class-G Headphone & Class-D Speaker Amplifiers Help Audio Designers Balance Audio Power Versus Ba...
July 18 2011 - 11:00AM
Business Wire
Designers of mobile devices, such as smartphones,
tablets/multimedia internet devices (MID), and portable media
players, are faced with the challenge of making the small speakers
in their devices sound louder and better, while minimizing impact
on battery life.
To meet this challenge, Fairchild Semiconductor (NYSE: FCS), a
leading global supplier of high performance power and mobile
products, developed the FAB1200 stereo Class-G ground-referenced
headphone amplifier with integrated buck converter, as well as the
FAB2200 audio subsystem with stereo Class-G headphone amplifier and
1.2W Class-D mono speaker amplifier.
The FAB1200 features a charge pump which generates a negative
supply voltage that allows the headphone output to be
ground-centered and capacitor-free, eliminating up to two external
capacitors. An integrated inductive buck regulator provides direct
battery connection and adjusts the supply voltage between two
different levels based on the output signal level resulting in
reduced power consumption. The result of these features is reduced
systems cost and extended battery runtime, while maintaining a high
level of audio quality.
The device, available in a 16-bump, 0.4mm pitch, 1.56mm x 1.56mm
WLCSP package, offers excellent audio performance for better
sounding audio headsets and is ideal for mobile handsets,
tablets/MIDs, MP3 and portable media players.
The FAB2200 is an audio subsystem that combines a capacitor-free
stereo Class-G headphone amplifier with a Class-D speaker
amplifier. A proprietary integrated charge pump generates multiple
supply rails for a ground-centered Class-G headphone output
significantly reducing power dissipation when compared to Class-AB
design implementations, while offering high power supply rejection
ratio.
The filterless Class-D amplifier can be connected directly to a
speaker without the need for two external filter networks, reducing
the overall solution systems cost. The device also features
Automatic Gain Control which limits the maximum speaker output
levels to protect speakers without introducing distortion. It can
also dynamically limit clipping as the battery voltage falls.
The FAB1200 and FAB2200 mobile audio ICs make handsets,
tablets/MIDs, and other portable audio applications sound louder
and better while reducing overall systems cost and minimizing the
impact on battery runtime.
The FAB2200, available in a 25-bump, 0.4mm pitch, WLCSP package,
is ideal for cellular handsets, notebook computers and tablets.
Fairchild is a mobile technology leader, offering a substantial
portfolio of analog and power IP that can be customized to meet
specific design requirements. By integrating leading circuit
technologies into tiny, advanced packages, Fairchild provides
mobile users significant advantages while reducing the size, cost
and power of designs. Fairchild’s mobile IP can be found in a
majority of handsets in use today.
Fairchild Semiconductor: Solutions for Your Success™
Price: in 1,000 quantity pieces
FAB1200
$0.36
FAB2200
$0.57
Availability: Samples available now
Delivery: 8-10 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/FA/FAB1200.pdf
http://www.fairchildsemi.com/ds/FA/FAB2200.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.
Follow us on Twitter @ http://twitter.com/FairchildSemi
View product and company videos, listen to podcasts and comment
on our blog @
http://www.fairchildsemi.com/engineeringconnections
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