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National Semiconductor Introduces Industry’s Fastest Family of Analog Crosspoint Switches

LMH6582 and LMH6583 Achieve -3 dB Bandwidth of 500 MHz, Highest Bandwidth in the Industry, for High-Resolution Video Applications

Apr 24, 2006

April 24, 2006 – National Semiconductor Corporation (NYSE:NSM) today expanded its LMH® high-speed amplifier portfolio with two 16 x 8 analog crosspoint switches, the industry’s fastest switches for high-resolution professional, broadcast and industrial video applications.

The LMH6582 and LMH6583 are fully buffered, non-blocking analog crosspoint switches designed on National’s proprietary VIP10 process.  By offering the industry’s highest bandwidth and lowest crosstalk performance, these devices can give systems a 25 percent to 50 percent boost in bandwidth compared to competitive products.  This allows video designers to extend video resolution to QXGA (2048 x 1536) and beyond.

Increased Video Resolution, Picture Clarity
The LMH6582 and LMH6583 come in fixed gain of 1 and gain of 2, respectively.  Both versions provide a -3 dB bandwidth of 500 MHz and 0.1 dB gain flatness out to 100 MHz.  Slew rates up to 3000 V/us ensure that bandwidth is maintained over a wide range of signal amplitudes.  Designers can increase picture resolution in various wideband video applications, including wideband routers, matrix switchers, security/surveillance systems and video distribution.  In addition, the low channel-to-channel crosstalk of -50 dBc at 100 MHz increases picture clarity by minimizing video artifacts and shadows from adjacent channels.  Each buffered output can drive up to two back-terminated, 75-Ohm video loads.

Flexibility and Unique Architecture 
The inputs and outputs of the LMH6582 and LMH6583 feature high-impedance inactive states, making expansion to larger arrays easy. Symmetry has been designed into the pin arrangement, allowing doubling of inputs or outputs without the performance degradation normally associated with multi-chip expansion.  As an example, two LMH6582 chips can be combined on opposite sides of a PC board to form either a 16 x 16 or 32 x 8 matrix.  Similarly, the digital control, implemented by a 4-pin serial interface, is designed for ease of use and maximum flexibility.  For instance, users have the option of configuring the outputs individually, or all at the same time without powering down or resetting the entire chip.

VIP10 Process
National's LMH6582 and LMH6583 are National’s newest amplifiers using the VIP10 process.  Developed in National's wafer fabrication site in Arlington, Texas, the VIP10 process is a high-speed, dielectrically isolated, complementary bipolar process that utilizes deep trench technology on a bonded wafer for complete dielectric isolation and optimal high-speed amplifier performance.  The VIP10 process technology allows National to design the most power-efficient, performance-oriented high-speed amplifiers on the market today.

Pricing and Availability
Samples and evaluation boards of the LMH6582 and LMH6583 are available now in 64-pin thermally enhanced TQFP packages. Both devices are priced at $39.95 in 100-unit quantities.  For more information on the crosspoint switches or to order samples and an evaluation board, visit http://www.national.com/pf/LM/LMH6582.html and http://www.national.com/pf/LM/LMH6583.html.  A large selection of amplifiers is supported by National’s Amplifiers Made SimpleSM WEBENCH® online design tool.  To explore these solutions, visit http://webench.national.com. To learn more about designing with amplifiers, visit the library of online seminars.

Note to editors:  To view a high-resolution, downloadable photo of these products, visit National's photo gallery.

National at NAB
At NAB in Las Vegas from April 24 to 27, National will demonstrate the crosspoint switches in Room SU05-MR on the second level of the South Hall. To schedule a media interview or to see demonstrations of National’s new video products, please contact Naomi Mitchell at 408-721-2142 or at naomi.mitchell@nsc.com.

Supporting Video and Monitor Solutions
National’s analog technology can help video engineers differentiate their products.  In addition to its high-performance, high-speed amplifiers, National provides the key functions every system engineer requires in power management, data conversion, serial digital video products, audio subsystems, display ICs and networking products.

About National’s Amplifier Portfolio
Specializing in high-performance amplifiers and comparators, National Semiconductor offers a complete portfolio of op amps addressing the high-speed, precision, low-voltage and low-power markets with products ranging from building-block chips to application-specific standard products (ASSPs). The company has a long history of setting industry standards in amplifiers and continues this trend with product releases on National’s advanced VIP10 bipolar and VIP50 BiCMOS processes. National also leads the industry in packaging technology with its revolutionary Silicon Dust™ and micro SMD packaging technologies.  For more information on National’s amplifier products, visit amplifiers.national.com.

About National Semiconductor
National Semiconductor, the industry's premier analog company, creates high-value analog devices and subsystems.  National's leading-edge products include power management circuits, display drivers, audio and operational amplifiers, communication interface products and data conversion solutions. National's key analog markets include wireless handsets, displays and a variety of broad electronics markets, including medical, automotive, industrial, and test and measurement applications. Headquartered in Santa Clara, California, National reported sales of $1.91 billion for fiscal 2005, which ended May 29, 2005.  Additional company and product information is available at www.national.com.