What is FMS6646?

This electronic component, produced by the manufacturer "Fairchild Semiconductor", performs the same function as "SD/HD (1080p) Video Filter Driver".

FMS6646 Datasheet PDF - Fairchild Semiconductor

Part Number FMS6646
Description SD/HD (1080p) Video Filter Driver
Manufacturers Fairchild Semiconductor 
Logo Fairchild Semiconductor Logo 

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July 2009
Six Channel, SD/HD (1080p) Video Filter Driver
ƒ Three Selectable 8/75MHz (SD/HD 1080p) Filters
ƒ Three Fixed 8MHz (SD) Filters
ƒ Transparent Input Clamping
ƒ Single Video Load Drive (2VPP, 150, AV = 6dB)
ƒ AC- or DC-Coupled Inputs
ƒ AC- or DC-Coupled Outputs
ƒ DC-Coupled Outputs Eliminate AC-Coupling
ƒ Low-Power
ƒ Robust Output ESD Protection: 9kV HBM
ƒ Cable and Satellite Set-Top Boxes
ƒ DVD Players
ƒ Personal Video Recorders (PVR)
ƒ Video On Demand (VOD)
The FMS6646 Low Cost Video Filter (LCVF) is intended
to replace passive LC lters and drivers with a low-cost
integrated device. Six Butterworth lters provide
improved image quality compared to typical passive
solutions. The combination of low-power Standard-
Denition (SD) and High-Denition (HD 1080p) lters
greatly simplifies DVD video output circuitry. Three
channels offer xed SD lters, while the other three are
selectable between SD and HD lters.
The FMS6646 offers a xed gain of 6dB.
The FMS6646 may be directly driven by a DC-coupled
DAC output or an AC-coupled signal. Internal diode
clamps and bias circuitry may be used if AC-coupled
inputs are required (see the Applications Information
section for details).
The outputs can drive AC- or DC-coupled single (150)
video loads. DC-coupling the outputs removes the need
for output coupling capacitors. The input DC levels are
offset approximately +280mV at the output.
Ordering Information
Part Number
Temperature Range
-40°C to +85°C
Gain Setting
Eco Status
2500 / Reel
For Fairchild’s definition of Eco Status, please visit:
© 2009 Fairchild Semiconductor Corporation
FMS6646 • Rev. 1.0.1
Figure 1. Block Diagram

FMS6646 equivalent
Typical Performance Characteristics
Figure 3. FMS6646 SD Frequency Response
Frequency (MHz)
Figure 4. FMS6646 SD Frequency Response (Flatness)
Frequency (MHz)
Figure 5. FMS6646 HD Frequency Response
© 2009 Fairchild Semiconductor Corporation
FMS6646 • Rev.1.0.1


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Featured Datasheets

Part NumberDescriptionManufacturers
FMS6646The function is SD/HD (1080p) Video Filter Driver.Fairchild Semiconductor
Fairchild Semiconductor

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