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Fairchild video reconstruction filters suit satellite STBs, DVD players

Posted: 17 Sep 2003 ?? ?Print Version ?Bookmark and Share

Keywords:fairchild semiconductor? fms6417? video reconstruction filter? fms6417chx? fms6417demo?

Fairchild Semiconductor has released the FMS6417, a five-channel, video reconstruction filter that includes selectable RGB high definition and standard definition filters with Y, C, composite, and modulator outputs. The product combines video line drivers, sound notch, and multiple video input/output standards all in one chip.

Suitable for applications such as cable and satellite STBs, DVD players, personal video recorders, HDTVs and TV receivers, the device has the ability to remove high frequency noise prior to digitizing the signal (anti-aliasing) or to remove artifacts introduced during D/A conversion in the encoder (reconstruction), this monolithic device can be used for anti-aliasing or reconstructive (smoothing) filtering for RGB, component, S-video, and composite video signals.

The FMS6417 consists of a triple 6th order filter with selectable 30MHz and 8.0MHz frequencies and a dual 8MHz filter for filtering Y/C. The filter contains a summing circuit to generate filtered composite video, an audio trap, and group delay compensation circuits to notch-out audio and group delay predistortion for NTSC. In addition, 2-to-1 multiplexers are provided on the triple filters, as well as provisions for auxiliary inputs to the composite channel. The FMS6417 also includes DC-coupled inputs and all outputs can drive AC-coupled, 75 ohms loads and provide 6dB of gain.

The FMS6417CH is available for $2.70, while the FMS6417CHX (tape and reel) is priced at $2.78, both for 1,000-piece quantities. The FMS6417DEMO demo board is available for $375.

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