Analog Devices Unveils Industry's Most Flexible, High-Performance Integrated Synthesizer for Wireless Base Stations.

Business/Technology Editors

Communications Design Conference 2002

SAN JOSE, Calif.--(BUSINESS WIRE)--Sept. 24, 2002

Analog Devices Inc. (NYSE: ADI), a global leader in high-performance semiconductors for signal processing applications, today announced an integrated synthesizer that is the first solution to feature a 1 GSPS direct digital synthesizer (DDS), 10-bit D/A converter and fast frequency hopping and fine-tuning resolution functionalities on a single chip. The low-cost AD9858 performs at more than triple the speed of previous solutions, without increasing power dissipation, making it well-suited to wireless infrastructure as well as military and aerospace radar applications.

In wireless base station applications, the AD9858 provides a lower-cost integrated and flexible platform for realizing fast hopping synthesizers that do not require isolation switches. On-chip functional blocks include a DDS core, a digital to analog converter (DAC), 2 GHz RF mixer, a 150 MHz phase detector and a programmable charge pump with proprietary fast-locking acquisition logic. The integration of these multiple functional blocks and their respective levels of performance enable the AD9858 to achieve breakthrough synthesizer performance at low levels of cost, power dissipation and implementation complexity.

"Unlike other high-speed DDS products that are available, the AD9858 integrates a DAC, phase/frequency detector and charge pump," said Kevin Kattman, product line director for high-speed converters at Analog Devices. "The result is a highly cost-efficient solution that addresses designer requirements of low phase noise, low spurious energy, fast frequency switching and wide bandwidth linear sweeping capability."

About the AD9858

The AD9858 DDS is a flexible device that consists of a power-efficient DDS core, a 32-bit phase accumulator, 14-bit phase offset adjustment, and a 1 GSPS 10-bit DAC. It features an analog mixer capable of operating at 2 GHz, a phase-frequency detector (PDF), and a programmable charge pump (CP) with advanced fast-lock capability. These RF building blocks can be used for various frequency synthesis loops or as needed in system design.

The new DDS can directly generate frequencies up to 400+ MHz when driven at 1 GHz internal clock speed. The reference clock can be derived from an external clock source of up to 2 GHz by using the on-chip divide-by-2 feature. The on-chip mixer and PFD/CP make possible a variety of synthesizer configurations capable of generating frequencies in the 1-2 GHz range or higher.

The AD9858 is easily configured by writing data to its on-chip digital registers that control all operations of the device. In addition, it can be programmed to operate in single-tone mode or in a frequency-sweeping mode. To reduce power consumption, there is also a programmable full-sleep mode.

Pricing and Availability

The AD9858 is available in a 100-lead EPAD-TQFP at $49.50 per unit in 1,000-piece quantities. For more information, please visit: http://www.analog.com/AD9858.

About Analog Devices

Analog Devices is a leading manufacturer of precision high-performance integrated circuits used in analog and digital signal processing applications. The company is headquartered in Norwood, Massachusetts and employs approximately 8,800 people worldwide. It has manufacturing facilities in Massachusetts, California, North Carolina, Ireland, the Philippines, Taiwan and the United Kingdom. Analog Devices' stock is listed on the New York Stock Exchange and the company is included in the S&P 500 Index.