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PDF FMS6646 Data sheet ( Hoja de datos )
| Número de pieza | FMS6646 | |
| Descripción | SD/HD (1080p) Video Filter Driver | |
| Fabricantes | Fairchild Semiconductor | |
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July 2009
FMS6646
Six Channel, SD/HD (1080p) Video Filter Driver
Features
Three Selectable 8/75MHz (SD/HD 1080p) Filters
Three Fixed 8MHz (SD) Filters
Transparent Input Clamping
Single Video Load Drive (2VPP, 150Ω, AV = 6dB)
AC- or DC-Coupled Inputs
AC- or DC-Coupled Outputs
DC-Coupled Outputs Eliminate AC-Coupling
Capacitors
Low-Power
Robust Output ESD Protection: 9kV HBM
Applications
Cable and Satellite Set-Top Boxes
DVD Players
HDTV
Personal Video Recorders (PVR)
Video On Demand (VOD)
Description
The FMS6646 Low Cost Video Filter (LCVF) is intended
to replace passive LC filters and drivers with a low-cost
integrated device. Six Butterworth filters provide
improved image quality compared to typical passive
solutions. The combination of low-power Standard-
Definition (SD) and High-Definition (HD 1080p) filters
greatly simplifies DVD video output circuitry. Three
channels offer fixed SD filters, while the other three are
selectable between SD and HD filters.
The FMS6646 offers a fixed 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 (150Ω)
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
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Part Number
Operating
Temperature Range
FMS6646MTC20X
-40°C to +85°C
Gain Setting
6dB
Eco Status
RoHS
Package
TSSOP-20
Packing
Method
2500 / Reel
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html
© 2009 Fairchild Semiconductor Corporation
FMS6646 • Rev. 1.0.1
Figure 1. Block Diagram
www.fairchildsemi.com
1 page  
Typical Performance Characteristics
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
-4.0
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5
0
-5
-10
-15
-20
-25
-30
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
5
www.fairchildsemi.com
5 Page 
Physical Dimensions
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Figure 20. 20-Lead Thin Shrink Small Outline Package (TSSOP)
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify
or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically
the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/.
© 2009 Fairchild Semiconductor Corporation
FMS6646 • Rev.1.0.1
11
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| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet FMS6646.PDF ] | |
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