USA : Analog Devices introduced a wideband receiver subsystem for cellular base stations that addresses the demanding performance requirements of 3rd generation (3G) standards, such as CDMA2000, UMTS, and TD-SCDMA. With 3G technologies, mobile communications is evolving from voice-centric services to multimedia, content-rich information services. This migration, coupled with the variety of standards implemented in different parts of the world, poses many design challenges for telecommunications equipment makers and service providers as they seek the technologies that will allow people to talk to a friend, watch a video clip, and surf the Internet--simultaneously--all from one portable multimedia device.
"The year 2004 will be a critical year for the growth of 3G technology markets. Mobile network operators are seeking cost-effective solutions from their equipment makers, while equipment makers are challenged with building systems that can operate over the broadest range of 3G services," said David Robertson, product line director for high-speed converters in communications, Analog Devices, Inc. "To meet this challenge, Analog Devices has leveraged our integration expertise, combining two of our most powerful devices into one complete, high-performance solution that reduces both component count and system complexity."

About the AD6654

Analog Devices' new mixed-signal device--the AD6654--combines the industry's highest performance 14-bit analog-to-digital converter (ADC) with a four- or six-channel digital down-converter (DDC). This highly integrated solution enables efficient processing of multi-carrier standards by removing the traditional interconnect issues associated with high-speed data transfer from the ADC to the DDC. In addition, the integrated device reduces the bill of material (BOM) components count, which can translate into a 20 percent saving in cost over individual components.
The AD6654 joins ADI's MxFE(R) (mixed-signal front-end) family of high-speed converters. MxFE devices are based upon a "smart partitioning" of analog and digital functions to provide optimum cost and performance combinations. The analog core of the AD6654 contains ADI's industry-leading high-speed 14-bit ADC (the AD6645), which operates at more than 92 MSPS, while the digital function is performed by a DDC.