New ADF4108 eliminates the need for frequency doublers, greatly simplifying system architecture and reducing cost in high-frequency wireless systems.

Norwood, MA (06/12/2006) - Furthering its commitment to innovation in wireless and RF IC design, Analog Devices, Inc. (NYSE: ADI), a global leader in high-performance semiconductors for signal processing applications, today announced the industry’s first 8-GHz phase-locked loop (PLL) synthesizer. The new ADF4108 is targeted at high-frequency wireless systems, such as those used for broadband wireless access, satellite communications, instrumentation, wireless LANs and base stations for wireless radio. Because of its high-frequency operation, the ADF4108 can eliminate the need for frequency doublers, thereby simplifying the system architecture and reducing system cost.

“ADI’s RF and wireless engineering efforts are built upon an allegiance to innovation, quality and solving the signal processing challenges of its customers,” said Christian Kermarrec, vice president, RF and wireless systems, Analog Devices, Inc. “The ADF4108 is the latest example of how we continue to develop products that ease wireless system design while maintaining high performance.”

The new ADF4108 will be showcased at this year’s IEEE MTT-S International Microwave Symposium taking place June 11-16 in San Francisco, Calif. On display at ADI’s booth (#2209) will be the latest innovations from the company’s broad portfolio of RF ICs and technologies for applications including cellular terminals and infrastructure, wireless instrumentation, broadband wireless access, and more.

The ADF4108 deepens Analog Devices’ broad range of RF ICs and technologies, which includes direct digital synthesizers; PLL synthesizers; detectors and logarithmic amplifiers; fixed and variable gain amplifiers; mixers, modulators, and demodulators; integrated IF amplifiers; RF transmitters and transceivers, and the Othello® family of single-chip transceivers for cellular terminals. Analog Devices also offers ADIsimPLL™, the industry’s most comprehensive PLL circuit design and evaluation tool, and ADIismLINK™, a development tool for users of Analog Devices’ ISM band transceivers for short range wireless connectivity.

About the ADF4108
Operating at 8 GHz, the ADF4108 is the highest frequency PLL synthesizer currently available on the market. The device can be used to implement local oscillators in the up-conversion and down-conversion sections of wireless receivers and transmitters. It consists of a low-noise digital PFD (phase frequency detector), a precision charge pump, a programmable reference divider, programmable A (6-bit) and B (13-bit) counters, and a dual-modulus prescaler (P/P + 1). The A and B counters, in conjunction with the dual-modulus prescaler, implement an N divider (N = BP+A). In addition, the 14-bit reference counter (R counter) allows selectable REFIN frequencies at the PFD input. The ADF4108 has a power supply range of 3.2-3.6V and a separate charge pump supply (VP) allows extended tuning voltage in 3.3V systems. A complete PLL can be implemented if the synthesizer is used with an external loop filter and voltage controlled oscillator.

Pricing and Availability
The ADF4108 is available now in a LFCSP (lead-frame chip scale package) and is priced at $3.30 per unit in quantities of 1,000.

Analog Devices Wireless Infrastructure Solutions
From discrete to complete solutions, Analog Devices offers one of the most comprehensive portfolios of wireless infrastructure ICs in the industry. ADI delivers hundreds of products for the wireless infrastructure market in 2G/3G/4G cellular, WiMAX, microwave, and satellite for single or multicarrier, direct conversion, or superheterodyne radio designs. Among its extensive offerings are RF and IF building block components, RF subsystems, data converters, clock distribution, thermal and power management, power detection and digital signal processing systems based on the TigerSHARC® processor. ADI views the market from a solutions perspective, applying its technical resources, packaging and module technology, and simulation tools to build a worldwide leadership position in wireless infrastructure.

About Analog Devices
Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Celebrating 40 years as a leading global manufacturer of high-performance integrated circuits used in analog and digital signal processing applications, Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices' common stock is listed on the New York Stock Exchange under the ticker “ADI” and is included in the S&P 500 Index.

ADIsimPLL and ADIismLINK are trademarks of Analog Devices, Inc. All other trademarks included herein are the property of their respective owners.

Editor's Contact Information:

Colleen Cronin

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