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Video filters enhance anti-aliasing, DAC smoothing

Posted: 31 Aug 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Maxim? MAX7469? MAX7470? MAX7472? MAX7473?

Maxim Integrated Products said its four new video filters have solved the issue of fine-tuning filter cut-offs in anti-aliasing and reconstruction filters. The company also said it expects these video filters to facilitate the proliferation of component video sources in consumer electronics.

MAX7469/MAX7470 are digitally-configurable, three-channel component HD video filters and MAX7472/MAX7473 are said to be the first ICs to combine a triple 3:1 mux with a digitally configurable component, anti-aliasing filter and an integrated buffer. These devices support 1080i, 720p, 480p and 480i scanning standards, as well as QVGA, VGA, SGVA, XGA, SXGA and UXGA computer video standards. They also support component video (Y PB PR, RGB and RGBHV), composite (CVBS) and S-video (Y/C). This complete standard support makes the devices suitable for anti-aliasing and DAC smoothing in digital-video devices such as HDTVs, including LCD, plasma and CRT models.

"Many applications demand the precision and flexibility of dialing in a specific cutoff frequency for their anti-aliasing filter," said Jeremy Tole, Maxim's director of business management for advanced video products. "These new video filters will provide the flexibility and performance that consumer electronics manufacturers have been requesting."

The new video filters save significant board space and design time, according to Maxim, while improving performance at a cost comparable to discrete fixed-frequency, high-definition, L-R-C filter and buffer solutions currently available. The company said these video filters offer many integrated space- and cost-saving features that are critical to consumer applications.

These devices operate over the upper-commercial temperature range and offered in a 5-by-5mm 20-pin TQFN. MAX7469/MAX7470 are priced starting at $2.07 each while MAX7472/MAX7473 are priced starting at $2.52 each (1,000-up, FOB USA).




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