Fairchild Semiconductor Introduces the Industry's Most Highly Integrated Standard Definition, Precision Video Filter/Driver for
August 30 2005 - 12:30PM
Business Wire
Fairchild Semiconductor's (NYSE:FCS) FMS6406 is the industry's most
highly integrated standard definition, low-pass reconstruction
video filter/driver. This device features an integrated sound notch
and output drivers that meet the latest cable and satellite set-top
box performance requirements of 170 ns group delay predistortion.
The FMS6406 compensates for the inherent distortion in the TV
receiver by including a group delay and chroma-luma delay FCC
predistortion circuit that prevents the image's high-frequency
edges from appearing distorted on the TV screen. The notch filter
creates a window in the video signal at approximately 4.5 MHz to
eliminate interference between the audio and video before these
signals are combined in the channel 3 / 4 RF modulator.
"Fairchild's highly integrated video filter reduces board space by
30% to 40% by effectively replacing discrete reconstruction
filters, an external sound notch and group delay compensation
circuits and cable drivers, while increasing system reliability in
set-top box and personal video recorder (PVR) applications. This
integration translates into significant board savings," says Jeremy
Tole, Fairchild's technical marketing manager, Video Products. "The
FMS6406 answers a pressing need in the set-top box and PVR market
by providing a highly efficient and inherently low-cost system
solution." Fairchild's FMS6406, a 5th order video filter,
eliminates unwanted digital artifacts by significantly reducing the
clock and image frequencies after the digital-to-analog conversion
process occurs on an MPEG chip. This video filter/driver is also
capable of DC coupling on the outputs to improve the low-frequency
video, while at the same time eliminating the need for three large
capacitors. Typical designs for set-top boxes offer both S-video
and composite-video outputs. Fairchild's FMS6406 offers separate
chrominance and luminance outputs to directly drive the S-video
output. These outputs are also internally summed to form a
composite video signal. The composite- and S-video outputs provide
a fixed gain of 6 dB and offer the flexibility of either AC or DC
coupling. Key features include: -- Dual 5th order 7.6 MHz low-pass
filters eliminate unwanted digital artifacts; -- RF modulator
support -- Integrated equalizer and sound notch filter for driving
the RF modulator; -- 4.5 MHz sound trap removes video noise in the
spectral location of the subsequent FM audio carrier; -- 170 ns
group delay / chroma-luma delay predistortion for NTSC applications
(as required for broadcast transmitters by the FCC) compensates for
the inherent receiver IF filter's group delay distortion; --
AC-coupled inputs and a DC restoration circuit for low tilt; -- The
inputs are Y/C and include a Y sync tip clamp and chroma blanking
clamp; -- The filtered outputs are Y/C and CV with 50 dB stopband
attenuation at 27 MHz and better than 0.5 dB flatness to 4.2 MHz;
-- All outputs are capable of driving 2 Vpp, AC- or DC-coupled,
into either a single or dual 75 Ohm video load; and -- Internal
chroma-luma summing circuit for driving composite video outputs.
The FMS6406 is offered in a space-saving 8-pin SOIC package. This
product is lead (Pb)-free and meets or exceeds the requirements of
the joint IPC/JEDEC standard J-STD-020B and is compliant with
European Union requirements now in effect. -0- *T Price: (1,000
pcs) -- FMS6406CS (rail) and FMS6406CSX (tape reel) both US$1.69
Availability: Now Delivery: 12-16 weeks ARO *T For more information
about this product, please go to
http://www.fairchildsemi.com/pf/FM/FMS6406.html. For information on
other Fairchild products, design tools, and sales contacts, please
visit http://www.fairchildsemi.com. Editor's Note: A datasheet of
this product in .pdf format can be found at
http://www.fairchildsemi.com/ds/FM/FMS6406.pdf About Fairchild
Semiconductor: Fairchild Semiconductor (NYSE:FCS) is the leading
global supplier of high-performance power products critical to
today's leading electronic applications in the computing,
communications, consumer, industrial and automotive segments. As
The Power Franchise(R), Fairchild offers the industry's broadest
portfolio of components that optimize system power through
minimization, conversion, management and distribution functions.
Fairchild's 9,000 employees design, manufacture and market power,
analog & mixed signal, interface, logic, and optoelectronics
products from its headquarters in South Portland, Maine, USA and
numerous locations around the world. Please contact us on the web
at www.fairchildsemi.com.
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