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Switch cuts cost, board space

Posted: 17 Mar 2005 ?? ?Print Version ?Bookmark and Share

Keywords:intersil? video switch? el4544? video crosspoint switch?

Intersil Corp.'s new triple 16 x 5 video switch promises to reduce cost, board space and design time for video switching applications such as security video systems, large video distribution systems and KVM operations.

Designed for high bandwidth RGB (red, green, blue) switching applications, the EL4544 is a video crosspoint switch that has 16 (RGB differential) input channels, which connect via an internal crosspoint multiplexer to five single-ended output channels. The device also features integrated input and output gain controls, auto-calibration for DC restore, a pixel-by-pixel overlay mux and embedded sync decoding.

"It [the EL4544] provides a new level of integration for video switching applications by replacing the multiple muxes and buffers that are required in other discrete solutions," said Patrick Long, Intersil's marketing manager for Video Products. "Along with its cost, space and time-to-market advantages, the EL4544 allows system designers to send and switch RGB video over standard CAT-5 cabling when used in combination with the EL4543 differential driver with embedded sync encoding."

The EL4544 is programmed through a simple serial interface and can be daisy chained to create large switching arrays. It has input and output gain controls that provide four levels of control for screen brightness; can directly drive 150 ohm loads; provides a presence-of-signal indicator that looks for syncs on a pre-assigned channel; and offers crosstalk rejection of 75dB at 100MHz. It also features -3dB bandwidth of 300MHz, and 60MHz 0.1dB gain flatness.

The EL4544 is available in Pb-free, 356-pin BGA packages. The suggested price in 1,000-unit quantities is $36 each.

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