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IC 'drives' signal conditioning at SMPTE data rates

Posted: 28 Apr 2005 ?? ?Print Version ?Bookmark and Share

Keywords:national semiconductor? hdtv? digital cable driver? adaptive cable equalizer? clc002?

National Semiconductor Corp. is sampling an HDTV serial digital cable driver and adaptive cable equalizer that it claims deliver the industry's lowest power and highest electro-static discharge (ESD) protection to the video production equipment market.

The CLC002 SD/HD (standard definition/high definition) TV digital cable driver and CLC034 SD/HD TV adaptive cable equalizer deliver the signal conditioning necessary for standard- and high-definition serial data transmission at Society of Motion Picture and Television Engineers (SMPTE) data rates.

They also provide the analog output and input required for error-free serial digital video (SDV) transmissions in digital video routers, switchers and conversion and generation systems. Both products provide greater than 8-KV Human Body Model of ESD protection.

CLC002 features

The CLC002 is a monolithic, high-speed cable driver designed for use in SMPTE 292M, 259M and 344M serial digital video applications and ITU TG.703 serial digital data transmissions. Packaged in an 8-pin SOIC, the CLC002 drives 75-ohm transmission lines at data rates up to 1.485Gbps.

It offers two selectable slew rates for SMPTE compliance. Using an external resistor, the output voltage swing is adjustable from 800mV to 1V.

CLC034 features

The CLC034 adaptive cable equalizer is a monolithic IC that equalizes data transmitted over cable or any media with similar loss characteristics. It is packaged in a 16-pin SOIC, and operates over a wide range of data rates from 143Mbps to 1.485Gbps. The chip also supports SMPTE 292M, 259M and 344M serial digital video interfaces.

To handle pathological data conditions, CLC034 is equipped with signal-level restoration that can be bypassed for low data rate applications. The equalizer is flexible, allowing either single-ended or differential input drives.

Samples of the CLC002 and CLC034 are available now by contacting a National Semiconductor sales or distribution representative. In 1,000-unit quantities, the CLC002 driver costs $12 and the CLC034 equalizer is priced at $39 each. Evaluation boards for both products are also available.

- Ismini Scouras

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