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National Semiconductor Reaches Gigahertz Range with the Industry’s Lowest Power High-Speed Analog-to-Digital Converter

Targeted for Test and Measurement Equipment, National’s ADC081000 Achieves 7.5 ENOB at 1.6 GHz While Consuming just 1.4 Watts

Feb 17, 2004

February 17, 2004 - National Semiconductor Corporation (NYSE: NSM) today announced a high-performance CMOS analog-to-digital converter (ADC) that requires 75 percent less power than most comparable products on the market. The ADC081000 digitizes signals to 8-bit resolution at sampling rates up to 1.6 GHz while consuming just 1.4 watts from a 1.9 volt nominal supply. Because the ADC081000 is the fastest, most accurate 8-bit ADC at this power consumption level, it is ideal for high-performance applications such as test and measurement and communications equipment.

“With the ADC081000, National is expanding its ADC product offerings into the GHz range with an extremely low-power product that enables our customers to eliminate heat sinks, saving both board space and system cost,” said Andrew Jue, director of marketing for National Semiconductor’s Data Conversion Systems group.  “National’s proprietary, analog-optimized 0.18 micron CMOS process enables us to deliver high-performance ADCs with the lowest power consumption in the industry.”

The ADC081000 is the first in a family of GHz-range ADCs.  It will be followed by a dual product in the second half of 2004 and higher-speed versions in 2005.

About the ADC081000
The ADC081000 is designed with an extremely low bit error rate (BER).  At a 1.6 GHz sampling rate and input frequencies up to 100 MHz, the ADC081000 achieves 0.15 LSB (least significant bits) DNL (differential non-linearity), 0.35 LSB INL (integral non-linearity) and 7.5 ENOB (effective number of bits). These specifications are especially important in high-speed oscilloscopes. 

The ADC081000 also features a unique folding/interpolating architecture. Folding reduces the number of comparators, and interpolation greatly reduces the number of front-end amplifiers required, saving power and reducing the load on the input signal.  In addition, the ADC081000 has an ideal pulse response and guarantees “no missing codes” over the full operating temperature range of -40 to 85ºC.  This enables the product’s high level of performance and accuracy. Lastly, the ADC081000 features a National LVDS (low voltage differential signaling) interface, which enables reliable transmission of high-speed signals, while maintaining low noise and distortion levels.

National at the ISSCC
National Semiconductor will provide an overview of the ADC081000 architecture in a session at the 2004 International Solid-State Circuits Conference (ISSCC) on Tuesday, February 17 in San Francisco.  The session, “A 1.8V 1.6GS/s 8b Self-Calibrating Folding ADC with 7.26 ENOB at Nyquist Frequency,” will take place at 1:30 p.m. and is part of the High-Speed A/D Converters track.  More information on ISSCC is available at www.isscc.org/isscc

About National’s High-Performance ADCs
With the introduction of the ADC081000, National continues to expand its line of high-performance, low-power ADCs.  The first member in a family of GHz 8-bit ADCs, the ADC081000 complements National’s high-performance 10-bit and 12-bit ADC families.  In addition, National is developing higher-resolution 14- and 16-bit ADCs and continuing to build its low-power, general purpose SAR (successive approximation register) ADCs for broad market applications.  National continues to strengthen its data conversion portfolio by leveraging its advanced ADC architectures, analog enhanced CMOS process and world class packaging technology.  ADCs are one of the key building blocks in system designs, and accurately capture real-world, analog information and convert it for processing in the digital domain. 

Pricing and Availability
The ADC081000, housed in a 128-lead exposed pad package, is priced at $100 in 1K volumes.  The product is scheduled for full production release in April 2004 and samples will be available then.  More information about the product is available at http://www.national.com/pf/AD/ADC081000.html
.  To view a high-resolution downloadable photo of the ADC081000, visit National's photo gallery at http://www.national.com/company/pressroom/gallery/dcs.html.

About National Semiconductor
National Semiconductor, the industry's premier analog company, creates high performance analog devices and subsystems. National's leading-edge products include power management circuits, display drivers, audio and operational amplifiers, imaging sensors and data conversion solutions. National's key markets include wireless handsets, displays, PCs, networks and a broad range of portable applications. With headquarters in Santa Clara, California, National reported sales of $1.67 billion for fiscal 2003, which ended May 25, 2003. Additional company and product information is available at www.national.com