L2Tek adds long-reach cable equalizer chips from Semtech to its broadcast portfolio

L2Tek, a distributor of components and sub-assemblies for professional video and high-speed communications systems, has gained a number of design wins with the recently launched Semtech GS3440 and GS3441 3Gb/s adaptive cable equalizer integrated circuits (ICs), which offer improved levels of performance over extended cable lengths for broadcast applications.

In conjunction with the company’s recently announced GS3490 configurable and adaptive cable-equalizer and cable-driver combo IC, these devices have further helped to boost L2Tek’s portfolio of silicon devices available for the design and development of leading-edge broadcast equipment.

System designers face a growing range of challenges when it comes to broadcasting applications, such as fitting more equipment into existing spaces, using alternative connectors and thinner cables with higher single loss characteristics, or placing new equipment at longer distances. These new equalizers help address these challenges: the GS3440 and its dual-output variant, the GS3441, uniquely combine the industry”s longest reach with improved levels of jitter performance.

The reach and jitter performance of the GS3440 and GS3441 deliver 3Gb/s high-definition (HD) and standard-definition (SD) video with impressive levels of signal integrity at extended distances, providing designers of broadcast systems with greater flexibility in facilities design.

Designed for use in video routers and distribution amplifiers, the GS3440’s high-speed and low-power IC design equalizes and restores signals received over 75-ohm coaxial cable, delivering high-quality 3Gb/s images at distances beyond 200 metres, enabling equipment designers to specify longer maximum cable lengths for broadcast systems. The GS3440 supports SMPTE ST 424, ST 292 and ST 259 coaxial cable serial digital interfaces and is optimised for performance at transmission rates of 270Mb/s, 1.485Gb/s and 2.97Gb/s.

Identical in performance to the GS3440, the GS 3441 adds an additional output, providing even greater flexibility in system design. In a router application, for example, the extra output can be used to drive additional or redundant crosspoint inputs without the need for additional components such as buffers, multiplexers or selectors.


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