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SDI chipset provides complete serial link solution

Posted: 16 Apr 2009 ?? ?Print Version ?Bookmark and Share

Keywords:serial interface digital? chipset SDI? link serial?

Mindspeed Technologies Inc. has introduced what it claims is the industry's first multichannel, multirate, low-power chipset for serial digital interface (SDI) applications.

The chipsetconsisting of a dual cable equalizer (M21524), a quad video reclocker (M21355) and a dual cable driver (M21528)feature trace equalization and output de-emphasis. It provides a complete serial link solution for 3G/HD/SD-SDI broadcast equipment with over 70 percent power savings compared to existing solutions, according to the company.

M21355, the quad reclocker, typically consumes 410mW when all four channels are active, which is comparable to the power dissipation of a single channel legacy reclocker. At 120mW and 80mW respectively, the dual cable equalizer and cable driver, M21524 and M21528, consume two-thirds less power, per channel than the legacy devices.

In addition, the multichannel solutions feature small, integrated crosspoint switches, providing greater than 30 percent area savings in dense designs. The integrated crosspoint switch eliminates the need for additional multiplexers and switches on the board, as well as internal supply regulators and I/O termination, further reducing the need for external components.

Housed in industry standard QFN packages, M21524, M21355 and M21528 help realize a Society of Motion Picture and TV Engineers (SMPTE)-compliant SDI port in a fraction of the space previously possible.

They also include trace loss compensation in the form of input equalization and output de-emphasis where applicable. This aids in meeting high-speed signal integrity requirements of a 3G-SDI system.

In prototype quantities, the M21524, M21355 and M21528 are priced at $27, $90 and $14, respectively. The M21528 and M21355are available for sampling today and M21524 will be available for sampling in Q3 09.

- Ismini Scouras

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