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HDMI IC eases HDTVs, STBs, Blu-ray links

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

Keywords:HDMI? Blu-ray? ESD protection?

HDMI2C1-5DIJ

STMicroelectronics has launched a chip that simplifies HDMI-compliant connection design for STBs, Blu-ray players, game consoles, HDTVs and other HD products. The HDMI2C1-5DIJ, enables designers to meet HDMI specification version 1.3. It cuts up to 70 percent of board space compared to an equivalent network of discrete components for ESD protection, boosting, and level shifting of HDMI control signals.

Although ICs are available that provide both ESD protection and level shifting for the HDMI high-speed video/audio signal lines, as well as the two control channels, this removes the flexibility for designers to choose the best video/audio-protection IC offering the highest bandwidth and lowest capacitive loading. These characteristics are extremely important when protecting HDMI A/V signal lines so as not to degrade signal integrity, leading to a poorer end-user experience.

The HDMI2C1-5DIJ provides ESD protection as required by the HDMI specification, achieving 8kV contact-discharge meeting the international standard IEC 61000-4-2 level 4. The signal-boosting capability, also included, ensures reliable transmission over long cable lengths and/or low-cost cable with a high equivalent capacitor. Integrated level-shifting circuitry allows the low-voltage control signals to be put directly onto the 5V HDMI link with no extra components required. The IC also protects against possible damage from other equipment driving signals onto the HDMI link.

The HDMI2C1-5DIJ is a companion for ST's HDMIULC6-4SC6, which protects HDMI video/audio signal lines. This has ultra-low line capacitance of 0.6pF and bandwidth greater than 5GHz, allowing designers to implement HDMI-compliant ESD protection while also maximizing signal integrity. Together, these two devices help designers achieve HDMI-compliant interfaces for high-definition equipment built using ST's STi5xxx or STi7xxx HD decoder ICs.

The HDMI2C1-5DIJ is available in a 16-lead QFN 5 x 4 package, priced at $0.90 for orders of 1,000 pieces.

For application notes on HDMI click here.





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