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National Semiconductor’s High-Speed 14-bit ADC Offers Industry's Highest Full-Power Bandwidth

ADC14155, a 14-bit, 155 MSPS ADC, Offers 1.1 GHz Full-Power Bandwidth

May 23, 2006

May 23, 2006 -- National Semiconductor Corporation (NYSE: NSM) today introduced a 14-bit, 155 mega-sample per second (MSPS) analog-to-digital converter (ADC) that offers an industry-leading full-power bandwidth of 1.1 GHz.

The ADC14155 allows digitization of very high frequency signals, enabling high intermediate-frequency (IF) architectures in wireless communication applications.  The ADC14155’s high bandwidth performance allows it to digitize the first IF, eliminating the need for the second IF stage. This helps reduce component count and system power consumption, while also improving system reliability.  The ADC14155 is well-suited for all applications where high-bandwidth ADCs with excellent dynamic performance are required, such as 3G wireless base stations and test equipment.

“National is focused on providing our customers with distinct performance benefits when using our converters,” said Antonio Visconti, product line director of National Semiconductor’s Data Conversion Division. “For example, the ADC14155’s 1.1 GHz full-power bandwidth is 72 percent higher than the closest competitor in the 14-bit space and that advantage enables system designers to develop breakthrough architectures for wireless communication applications.”

In coming months, National plans to expand its high-speed 14-bit portfolio with additional low-power, high-performance ADCs in multiple speed grades and configurations that address the requirements of a broad range of applications.  The ADC14155 is the first in a new family of high-speed 14-bit ADCs that offers the industry’s highest performance with low power consumption, as well as parallel CMOS, parallel low-voltage differential signaling (LVDS) and serial LVDS output options.  National will expand this 14-bit family of ADCs to include products ranging from 80 MSPS to 155 MSPS, with one- and two-channel versions, and CMOS and LVDS outputs. The ADC14155 also will be available with double data-rate, parallel LVDS outputs. These ADCs will be introduced throughout the summer and fall of this year.

About the ADC14155
The ADC14155 provides a dynamic performance of 85 dB spurious free dynamic range (SFDR) and a 72 dB signal-to-noise ratio (SNR) at an input frequency of 70 MHz, which is commonly used in communications receivers.  The low-jitter front end on the ADC14155 enables the industry’s best performance of 72 dB SFDR and 68 dB SNR at an input frequency as high as 420 MHz.  The ADC14155 operates on a 3.3V supply while consuming 980 mW (typical), with a power-down feature to reduce power consumption to 5 mW.  A separate +1.8V supply for the digital interface allows low-power operation with reduced noise.  The ADC14155 is available in a 48-pin LLP® package.

Pricing and Availability
The ADC14155 is priced at $61.75 in 1,000-unit quantities and will be released to production in June 2006.  For more information about the ADC14155, including how to order samples and evaluation boards, please visit http://www.national.com/pf/DC/ADC14155.html
Note to Editors:  To view a high-resolution downloadable photo of this product, visit National's photo gallery.

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