Product category: Communications ICs (Wired)
News Release from: National Semiconductor | Subject: DS16EV5110
Edited by the Electronicstalk Editorial Team on 07 March 2007
Equaliser chip adds reach to standard
cables
Cable equaliser extends the reach of digital visual interface (DVI) and high-definition multimedia interface (HDMI) cable connections beyond 40m.
National Semiconductor has introduced a cable equaliser that enables video professionals and consumers to extend the reach of their digital visual interface (DVI) and high-definition multimedia interface (HDMI) cable connections beyond 40m The device also extends the reach of low-cost Cat5 cables to more than 20m
This article was originally published on Electronicstalk on 5 Jan 2001 at 8.00am (UK)
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Extending signal routing distance between the video source and digital television receiver or computer display is becoming increasingly important in today's video applications.
National's DS16EV5110 equalises cable signals encoded in the transition-minimised differential signalling (TMDS) format.
The cable equaliser is targeted at a wide range of video systems, including DVI/HDMI switches, routers and extenders, plasma and liquid crystal display high-definition TVs (LCD HDTVs), LCD and digital light processing (DLP) front and rear projectors, and medical imaging equipment.
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National will demonstrate this product at the National Association of Broadcasters (NAB) Convention in Las Vegas, Nevada, USA, 16th to 19th April 2007.
National optimised the DS16EV110 for operation from 0.25 to 1.65Gbit/s and made it compliant with the DVI v1.0 and HDMI v1.2a standards.
At 1.65Gbit/s datarate, the device extends cable reach to more than 40m over 24AWG DVI/HDMI cable, 25m over 28AWG DVI/HDMI cable and 20m over Cat5/5e/6 cable.
The device also operates up to 2.25Gbit/s when supporting 1080p HDTV resolution (with 12bit deep-colour depth) beyond 30m over 24AWG HDMI cable.
The equaliser supports digital TV resolutions of 480i/p, 720i/p and 1080i/p, as well as all computer resolutions from video graphics array (VGA) to wide quad extended graphics array (WQXGA).
Offered in a small 7 x 7mm 48-pin leadless LLP package, the DS16EV5110 features three equalised TMDS data channels, and one clock channel.
The clock channel provides an adjustable signal detect, which sends an alert when a loss-of-signal (LOS) occurs.
Each channel can be easily set to one of eight different boost settings through pin-control or an integrated system management bus (SMBus).
This flexibility allows the system designer to optimise the trace/cable length and reduce intersymbol interference.
By comparison, devices with fixed equalisation provide too much boost for short trace lengths and introduce unwanted jitter.
The DS16EV5110 is powered from a 3.3V supply and typically consumes 420mW operating over the -40 to +85C temperature range.
The device's standby mode reduces overall system power consumption and its equaliser channels can be programmed to match the skin loss effect of shielded-twisted pair DVI, HDMI cables or unshielded Cat5 cables.
The device also features 8kV of electrostatic discharge (ESD) protection.
Available now, the DS16EV5110 is priced at US $6.95 each in 100-unit quantities.
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