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6 Channel, SD / Full HD (1080p) Video Filter Driver
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General 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 (150W) video loads. DC-coupling the outputs removes the need for
output coupling capacitors. The input DC levels are offset approximately +280mV
at the output.
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Features
- Three Selectable 8/75MHz (SD/HD) Filters
- Three Fixed 8MHz (SD) Filters
- Transparent Input Clamping
- Single Video Load Drive (2VPP, 150W,
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
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Applications
- Cable and Satellite Set-Top Boxes
- DVD Players
- HDTV
- Personal Video Recorders (PVR)
- Video On Demand (VOD)
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