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National Semiconductor Targets the Communications Market with the Introduction of Three New High-Speed A/D Converters

Dec 4, 2001

December 4, 2001 - National Semiconductor Corporation (NYSE:NSM), today introduced three high-speed analog-to-digital converters (ADCs) that address the demands of communications applications such as high bandwidth, signal-to-noise ratio (SNR) and spurious free dynamic range (SFDR).  With their high speed, high bandwidth and low power consumption, these products are optimized for applications in cellular base stations, wireless modems, set-top boxes and ultrasound imaging equipment.

"National believes in the significance of the communications market and recognizes the importance of high speed, high bandwidth, high SFDR and low power consumption as success factors for communications applications," said Suresh Ram, marketing manager for National's data conversion systems product line.  "National's new ADCs meet these requirements and will allow our customers greater flexibility in the design of IF sampling, base band, digital video, and ultrasound imaging architectures."

National continues to expand its high-speed ADC portfolio with the introduction of the dual 10-bit ADC10D020, the single12-bit ADC12L063 and the single 12-bit ADC12L066.

The ADC10D020 is a dual, low-power CMOS ADC that digitizes signals to 10 bits resolution at sampling rates of 20 MSPS, while typically consuming 150mW from a single 3.0V supply.  This device features 80dB channel-to-channel isolation, eliminating worries of cross talk.  An offset correction feature on the ADC10D020 reduces the offset error to less than 1 least significant bit (LSB). 

This product provides both multiplexed and parallel outputs in twos complement or binary formats, offering a great deal of flexibility.  The ADC10D020 is a good fit for IQ demodulation schemes.  Additionally, the power-down mode at 1mW and standby mode at 27mW help to lower system power consumption.

The ADC12L063 is a CMOS ADC capable of converting analog input signals into 12-bit digital words at 62 MSPS.  This product uses a differential, pipeline architecture with an on-chip sample-and-hold to enhance performance and minimize power consumption.  Operating off a single 3.3V supply, this device consumes a very low 354mW at 62 MSPS.

The ADC12L063 was designed for IF sub-sampling up to 150MHz in wireless basestation applications.  This device features performance comparable to BiCMOS products, but requires only half the power.

The ADC12L066 sets a new industry standard for CMOS pipeline ADCs with exceptional SFDR performance that goes beyond 300MHz, enabled by a 450MHz - 3dB bandwidth.  The typical SFDR for 200MHz inputs is 72dBc. 

The 12-bit resolution and consistently high SFDR over a wide input bandwidth make the ADC12L066 ideal for higher IF sub-sampling communications receivers.  Operating on a single 3.3V supply, the ADC12L066 consumes only 354mW.  In the power-down mode, the power consumption is reduced to 50mW.

For input frequencies below 150MHz, the pin-compatible ADC12L063 provides equivalent performance to the ADC12L066.  Both the ADC12L066 and the ADC12L063 provide consistently high SFDR, enabling small signals to be recovered with minimal interference. 

Pricing and Availability
The ADC10D020 is now available in a 48-lead TQFP package and is priced at $5.75.  The  ADC12L063 is available in a 32-lead LQFP and is priced at $17.10.  The ADC12L066, sampling now, is available in a 32-lead LQFP and is priced at $18.10.  All three product prices are for 1,000-unit quantities. More information on these products is available at http://www.national.com/pf/AD/ADC10D020.html
, http://www.national.com/pf/AD/ADC12L063.html and http://www.national.com/pf/AD/ADC12L066.html.  For more information on National Semiconductor's data conversion products, visit http://www.national.com/appinfo/adc/.  To view a high-resolution downloadable photo, visit National's photo gallery at http://www.national.com/company/pressroom/gallery/dcs.html.

About National Semiconductor
National Semiconductor is the premier analog company driving the information age. Combining real-world analog and state-of-the-art digital technology, the company is focused on the fast growing markets for wireless handsets; information appliances; information infrastructure; and display, imaging and human interface technologies. With headquarters in Santa Clara, California, National reported sales of $2.1 billion for fiscal year 2001 and employs about 9,700 people worldwide.  Additional company and product information is available on the World Wide Web at www.national.com