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National Semiconductor Corporation (NS) has announced a cable equalizer for professional-grade video systems and consumer electronics that features extended cable lengths, such as digital visual interface (DVI) cable and high-definition multimedia The interface (HDMI) cable is extended to more than 40 meters, while the low-cost Category 5 cable (CAT5) can be extended to more than 20 meters.National's DS16EV5110 chip equalizes the cable signals encoded in the TMDS format. This cable equalizer is targeted at different video product markets, including DVI/HDMI switches, routers and extenders, high-definition plasma and LCD TVs, LCD/Digital Lightwave Processing (DLP) front-end and rear projectors. And medical imaging equipment. Since this chip is manufactured using National's exclusive BiCMOS-8 process technology, the total jitter is only 0.13 UI (unit interval).
National's DS16EV5110 cable equalizer chip operates from 0.25Gbps to 1.65Gbps and supports standards such as DVI v1.0 and HDMI v1.2a. With this chip and operating at 1.65Gbps data rate, the American Wring Gauge (AWG) 24 AWG DVI/HDMI cable can be extended to more than 40 meters; 28 AWG DVI/HDMI cable can be used Extended to 25 meters; CAT5/5e/6 cable can be extended to 20 meters. If the chip drives a 24 AWG HDMI cable that is longer than 30 meters, the speed will be as high as 2.25Gbps, and the resolution can meet the 1080p HDTV standard requirements, and the color depth can even reach 12 bits. This equalizer supports a wide range of digital TV resolutions from 480i/p, 720i/p and 1080i/p, as well as a wide range of computer monitor resolutions from VGA to WQXGA.
The DS16EV5110 video equalizer is available in a small 48-pin leadless LLP® package measuring just 7mm x 7mm. In addition to the built-in 3 balanced TMDS data channels, this chip also has a clock channel. This clock channel supports adjustable signal detection, so an alarm is issued when a Loss-of-Signal (LOS) condition occurs. Each channel can be easily set via pin control or the built-in system management bus (SMBus) and has 8 different enhanced signal settings to choose from. This design is highly flexible, allowing system designers to choose the optimal trace/cable length to reduce inter-symbol interference. In contrast, a chip with a fixed rate will over-enhance the signal of the short path, so that unnecessary jitter is added.
The DS16EV5110 requires only 3.3V to operate, and consumes only 420mW (typ) when operating from -40 degrees Celsius to 85 degrees Celsius. The chip also has a standby mode that reduces overall system power consumption, and the built-in equalizer channel can be pre-configured so it can shield shielded-twisted pair DVI cables, HDMI cables or unshielded The skin loss effect of the Category 5 cable (unshielded CAT5) is matched. The chip also features 8kV ESD protection.
The DS16EV5110 chip is available from stock in quantities of 1,000 and is priced at $6.95 each.
Aixuan Lighting & Technology Co., Ltd. , http://www.eko-lamps.com