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Analog Devices Unveils Breakthrough in Radio Frequency Power Detection for Wireless Infrastructure.

Business Editors/High-Tech Writers

NORWOOD, Mass.--(BUSINESS WIRE)--May 12, 2004

-ADI's XFCB-3(TM) SiGe process technology enables AD8318 to deliver RF power measurement from 1 MHz to 8 GHz and offer industry's best speed, accuracy, and temperature stability.

Analog Devices Inc. (NYSE: ADI), a global leader in high-performance semiconductors for signal-processing applications, today unveiled a major breakthrough in radio frequency (RF) detection for wireless infrastructure equipment. Analog Devices has developed the industry's first logarithmic RF detector to accurately measure the power of radio signals from 1 MHz to 8 GHz, exceeding the previous maximum of 2.5 GHz. Accurate RF power measurement can reduce the size and cost of expensive RF power transmitters and is a key to easing wireless network management challenges. Maintaining the detector dynamic range up to 8 GHz has never before been possible.

The AD8318, a monolithic semiconductor-based detector, is superior to traditional alternatives because it is more cost-effective than module solutions and more accurate than discrete diode-based detectors. Its unique combination of accuracy and broad dynamic range allows the device to be used in many types of wireless communications infrastructure equipment, including GSM, CDMA, and W-CDMA cellular base stations (which operate up to 2 GHz), W-LAN 802.11 applications (which require 5 GHz), and point-to-point fixed wireless systems (which operate up to 30 GHz).

"The AD8318 is a major breakthrough in terms of input bandwidth, speed, accuracy, and temperature stability, setting a new performance level in RF power measurement and control," said Lew Counts, vice president of Linear Products, Analog Devices. "Analog Devices continues to draw upon its extensive RF expertise and world-class process technology to meet the stringent performance and solution cost targets of our wireless infrastructure customers."

Increased Accuracy and Improved Temperature Stability

The AD8318 provides over 55-dB dynamic range with better than +/-1-dB accuracy up to 5.8 GHz. At 8 GHz, the AD8318 provides over 58-dB dynamic range with better than +/-3-dB accuracy. The temperature drift can be fine tuned to the band of interest, yielding better than +/-0.5-dB stability from -40 to +85 degrees C.

Greater Design Flexibility

The AD8318 integrates an on-chip temperature sensor that provides a 2-mV/degree C output voltage that can be used for additional temperature compensation and/or system monitoring. The part also provides the fastest output response time of 8 ns, enabling the part to be used for RF burst detection.

XFCB-3(TM) SiGe Process Enables 8 GHz Performance

The AD8318 is the next generation of Analog Devices' AD8313, a widely recognized industry standard for RF power measurement up to 2.5 GHz. The new logarithmic-based detector is fabricated on Analog Devices' proprietary XFCB-3(TM) process, ADI's fourth-generation bonded-wafer silicon-on-insulator (SOI) XFCB (eXtra Fast Complementary Bipolar) process. XFCB-3 uses 0.35 micron lithography and a silicon-germanium (SiGe) NPN to provide fT (transition frequency) of 70 GHz and fMAX (maximum frequency for unity power gain) of 130 GHz. XFCB-3 is a significant advance over previous generations of Analog Devices' revolutionary XFCB processes, enabling 3 times more speed over devices fabricated on XFCB-2. Specific to the AD8318, combined with advanced design techniques, XFCB-3 enables operational accuracy that is superior to discrete implementations with higher operating frequencies and integrated lower-frequency competitive solutions.

Pricing and Availability

The AD8318 is sampling now, and production quantities will be available July 2004. The device is offered in a compact 4 mm x 4 mm, 16-pin LFCSP (lead-frame chip-scale package), and is fully specified over the -40 to +85 degrees C operating temperature range. The AD8318 is priced at $5.99 per unit in 1,000-piece quantities. For more information, please visit

Analog Devices in Radio Frequency ICs

Using a unique combination of design skills, process technologies and system understanding, Analog Devices has assembled a broad portfolio of RF ICs, including complete chipsets and a full range of high-performance RF function blocks. ADI's extensive offerings include direct digital synthesizers (DDS); phase-locked loop synthesizers (PLLs); detectors and logarithmic amplifiers; X-AMP(R) fixed and variable gain amplifiers (VGAs); TruPwr(TM) RF power detectors; mixers, modulators, and demodulators; integrated IF amplifiers; and the Othello(R) family of single-chip transceivers and X-PA(TM) power amplifier modules for cellular terminals.

About Analog Devices

Analog Devices, Inc. is a leading manufacturer of precision high-performance integrated circuits used in analog and digital signal processing applications. ADI is headquartered in Norwood, Massachusetts, and employs approximately 8,600 people worldwide. It has manufacturing facilities in Massachusetts, California, North Carolina, Ireland, the Philippines, and the United Kingdom. Analog Devices' common stock is listed on the New York Stock Exchange and ADI is included in the S&P 500 Index.
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Publication:Business Wire
Geographic Code:1USA
Date:May 12, 2004
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