ANALOG DEVICES RELEASES NEW VERSION OF POPULAR PLL SYNTHESIZER SOFTWARE FOR RF DESIGNS

- ADIsimPLL Version 3.3 features extended range of devices, new and enhanced library and simulation features.
ADIsimPLL Version 3.3 assists users in evaluating, designing, and troubleshooting RF systems.

Norwood, MA (05/19/2010) - Analog Devices, Inc. (NYSE: ADI), a global leader in high-performance semiconductors for signal processing applications and RF IC function blocks covering the entire RF signal chain, today announced ADIsimPLL™ Version 3.3, a new generation of its successful phase-locked loop (PLL) circuit design and evaluation tool. ADIsimPLL Version 3.3 assists users in evaluating, designing, and troubleshooting RF systems exploiting Analog Devices’ family of PLL synthesizers and is available from ADI’s web site (http://www.analog.com/ADIsimPLL) free of charge.

Fully compatible with prior releases, ADIsimPLL Version 3.3 builds upon the success of previous versions of the software tool by adding support for 16 new devices, increased phase noise modeling accuracy and Fractional-N spur level estimation, along with enhancements to the tool’s New Design Wizard, Time Simulation Engine and Time Domain Simulator features. These innovative features further remove time-consuming iterations from the design process, ultimately speeding the design to market.

About ADIsimPLL Version 3.3
The new devices included in ADIsimPLL Version 3.3 are the recently announced ADF4150HV and ADF4158 synthesizers; ADF5000, ADF5001 and ADF5002 RF prescalers; highly integrated ADRF670x quadrature modulators with integrated Fractional-N PLL; ADRF660x mixers with integrated Fractional-N PLL and VCO; ADRF6750 quadrature modulator and ADRF6655 mixer. To support these new highly integrated solutions, the ability to derive additional frequency outputs by dividing the VCO signal has been incorporated into the ADIsimPLL design tool. There have also been significant improvements and enhancements to the tool’s simulation and evaluation capabilities. The phase noise simulation algorithms have been improved by the addition of the 1/f phase noise contribution from the digital dividers and the phase detector, resulting in highly accurate phase noise predictions from close to the carrier all the way to the broadband noise floor.

To assist in estimating the level of Fractional-N spurs, a new estimate of the worst case magnitude of the first three Fractional-N spurs is now calculated and displayed on the phase noise plots, which allows the user to evaluate different loop filter topologies and design parameters in order to manage the effect of these spurious signals. Furthermore, a variety of enhancements to the design tool have been made including those to the Time Domain Simulator to model the various modulation options available; and to the New Design Wizard so that the user can select from the range of options to generate the desired frequency. In addition, an output page for the secondary output is provided allowing different configuration options to be selected when the phase noise is displayed, and the Time Simulation Engine has been enhanced to accurately model the effect of the anti-backlash pulse.

To download ADIsimPLL Version 3.3, please visit http://www.analog.com/ADIsimPLL or learn more about ADI’s RF ICs and the company’s other RF design tools, please visit http://www.analog.com/RF.

ADI’s RF IC Portfolio Covers Entire RF Signal Chain
Using a unique combination of design skills, system understanding and process technologies, Analog Devices offers the broadest portfolio of RF ICs covering the entire RF signal chain from industry-leading high-performance RF function blocks to highly integrated WiMAX and short-range, single-chip transceiver solutions. The RF function blocks include DDS and PLL synthesizers; TruPwr™ RMS power detectors and logarithmic amplifiers; X-Amp® VGAs; power amplifiers, LNAs and other RF amplifiers, mixers and direct conversion modulator and demodulator products. These products are supported by a wide range of free design tools to ease the development of RF systems. For more information, visit: http://www.analog.com/pr/RF.

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. Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices is included in the S&P 500 Index.

ADIsimPLL, TruPwr and X-Amp are trademarks of Analog Devices, Inc.

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Editor's Contact Information:

Colleen Cronin
781/937-1622

colleen.cronin@analog.com

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