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FMS6410 Fiches technique(PDF) 1 Page - Fairchild Semiconductor

No de pièce FMS6410
Description  Dual Channel Video Drivers with Integrated Filters and Composite Video Summer
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Fabricant  FAIRCHILD [Fairchild Semiconductor]
Site Internet  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FMS6410 Fiches technique(HTML) 1 Page - Fairchild Semiconductor

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www.fairchildsemi.com
REV. 0.0.2 9/3/02
Video Features
• Dual integrated video low pass reconstruction filters on
outputs
• Composite Video Summer
• Integrated output drivers provide low impedance outputs
and deliver 2VP-P (6dB gain) video into 150
Ω.
• 7.1MHz 4th order video filters
• 7.1MHz Y and C filters, with CV out
• 42dB stopband attenuation at 27MHz on Y, C, and CV
• Better than 1dB flatness to 4.5 MHz on Y, C, and CV
• No external frequency select components or clocks
• 9ns group delay flatness on Y, C, and CV output
• AC coupled inputs and outputs
• 0.4% differential gain with 0.4
° differential phase
• Integrated DC Restore / Clamp circuitry with low tilt
Applications
• CCTV
• Cable and Satellite Set top boxes
• DVD players
• Televisions
• Personal Video Recorders (PVRs)
• Video On Demand (VOD)
• Distribution Amplifiers
General Description
The FMS6410 Dual Channel Video Filter – Driver Chip with
CV Summer offers comprehensive video filtering for set top
box or DVD applications. This part consists of two 4th order
Butterworth 7.1MHz low pass filters for video signals. The
filters are optimized for low overshoot and flat group delay.
The device also contains a summing circuit to generate
filtered composite video.
Integrated video drivers are
included to facilitate a direct drive to the outside world.
In a typical application, the Y and C input signals from
DACs are AC coupled into the filter. Both channels have DC
restore circuitry to clamp the DC input levels during video
sync. The Y and C channels use a separate feedback clamp.
The clamp pulse is derived from the Y channel.
The outputs are AC coupled. The Y, C and, CV outputs are
buffered to drive 2VP-P into a 150
Ω load (1VP-P into a
doubly terminated 75
Ω coax load) with up to 35pF of load
capacitance at the output pin. The Y, C, and CV channels
have a gain of approximately 2 (6dB) with 1VP-P input
levels. There is an option for the video output to be DC
coupled which limits the drive output to one output on each
channel.
Functional Block Diagram
1
2
NC (Reserved)
GND_VIDEO
CIN
YIN
YOUT
VCC_VIDEO
CVOUT
COUT
SYNC STRIP, REF,
AND TIMING
6dB
6dB
gM
gM
1V
1V
3
4
8
7
6
5
FMS6410
FMS6410
Dual Channel Video Drivers with Integrated Filters
and Composite Video Summer


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