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ANALOG DEVICES AND IBM TO COMMERCIALIZE SILICON-GERMANIUM INTEGRATED CIRCUITS FOR WIRELESS COMMUNICATIONS

 NORWOOD, Mass., Dec. 6 /PRNewswire/ -- Analog Devices (NYSE: ADI) and International Business Machines (NYSE: IBM) are today announcing an agreement regarding radio frequency (RF) and mixed-signal integrated circuits (ICs) based upon IBM's world-leading ultra-high-vacuum chemical- vapor deposition (UHV/CVD) silicon-germanium (SiGe) process.
 The agreement calls for ADI and IBM to design, produce and market the new ICs, which will initially be manufactured at the IBM Microelectronics Advanced Semiconductor Technology Center (ASTC) in Hopewell Junction, N.Y. The new process enables record-breaking silicon transistor speeds of over 60Jgigahertz (GHz), making it ideal for high- volume, affordable radio "front ends."
 SiGe technology allows 3-volt and even 1.5-volt operation, which significantly reduces the amount of battery power required for portable communications, and thus enables lighter and cheaper wireless systems. The process can be integrated with digital CMOS into BiCMOS, opening the way for single-chip digital telephones. Utilization of IBM's 8-inch production facility will also offer a cost advantage compared to the RF industry's standard 4-inch wafers.
 According to Mr. Richard Siber, director for the Wireless Communications service at market researcher BIS Strategic Decisions of Norwell, Mass., "This development is truly revolutionary in that it allows for significant size, weight and cost reductions in personal wireless communications systems such as personal digital assistants (PDA), cellular and cordless telephones, and wireless local area networks (WLAN), giving the entire wireless industry a major boost. This process will negate the need for more expensive gallium-arsenide for operating frequencies up to 3JGHz, which is exactly where the high- volume action is."
 The SiGe process, invented at the IBM Research Division's Thomas J. Watson Research Center in Yorktown Heights, N.Y., produces transistors with speeds two to three times faster than competing silicon processes. ADI and IBM began discussing the potential of the process for mixed- signal and RF applications in April 1992. Their initial efforts resulted in the fabrication of a 1-GHz, 12-bit digital-to-analog converter (DAC), which is being reported at the International Electron Devices Meeting (IEDM) taking place Dec. 5 to 8 in Washington, DC.
 According to Mr. John Day, president of Strategies Unlimited, a market research firm in Mountain View, Calif., that specializes in RF ICs, "The level of integration achieved on SiGe by the ADI/IBM team is truly impressive. Although a number of papers have reported single-transistor results, ADI/IBM report that over 3,000 devices have been yielded on a single chip. This medium-scale level of integration should be more than sufficient to produce a single-chip radio front-end for a variety of wireless applications."
 Within the next nine months ADI will be introduce a family of radio frequency and mixed-signal circuits for wireless communications based on the SiGe process. The process will also be used to produce high-speed circuits such as the 1-GHz DAC that enable broadband video over fiber optics or coax cable for multimedia telecommunications and data commmunications markets such as ATM/SONET and digital CATV.
 With fiscal 1993 revenues of $666 million, Analog Devices is a leading manufacturer of precision high-performance integrated circuits used in analog and digital signal-processing applications. The company employs approximately 5,300 people worldwide and has manufacturing facilities in Massachusetts, California, North Carolina, Ireland, Japan, The Philippines and Taiwan.
 The IBM Research Division provides technology leadership and vision to the IBM Corporation. It consists of 2600 people--one third of them with Ph.D.s--at laboratories in New York, California and Switzerland. The SiGe fabrication in the ASTC is a joint effort between IBM Research and IBM Microelectronics.
 -0- 12/6/93
 /CONTACT: James O. Fishbeck, director of corporate communications of Analog Devices, 617-461-3282, or Dr. Gerald Present of IBM Research Communications, 914-784-7469/
 (ADI IBM)


CO: Analog Devices; International Business Machines ST: Massachusetts IN: CPR SU: PDT

JL -- NE009 -- 5307 12/06/93 10:10 EST
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Date:Dec 6, 1993
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