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Tool makes ADI chip evaluation easier

Posted: 16 Nov 2006 ?? ?Print Version ?Bookmark and Share

Keywords:ADI? DDS ICs? evaluation tool? LabVIEW? NI?

Analog Devices Inc. (ADI) has developed a Web-based evaluation tool for direct digital synthesis (DDS) ICs sold by the company. The tool is one of several evaluation tools developed by ADI as a way to help engineers best match their needs with the device metrics of ADI's product line.

Bill Chestnut, ADI applications engineer, said the tool can either replace queries taken over the telephone or provide "a visual aid to the person on the other end of the phone" by showing the circuit's harmonic images and sine wave quality.

DDS parts are widely used in radar, telecoms, biomedical and industrial systems. Getting the right part at the right price, without paying for more filtering than the system requires, used to be a painstaking process, Chestnut said. The DSS online evaluation tool calculates the output frequency, filter roll-off and other requirements for the system being developed.

The tool was created in LabVIEW, the graphical language developed by National Instruments Corp. (NI).

ADI and NI also are cooperating to include support from the MultiSim tool developed by The Electronics Workbench, a company that NI purchased last year. Again, the goal is to enable ADI's customers to do parts research and selection, all the way through to schematic capture.

The results from MultiSim can be plugged into Signal Express during the evaluation and prototyping stage of a design. Signal Express is an NI software tool for acquiring and evaluating measurements.

ADI has Spice models for several hundred operational amplifiers, said Dave Kress, director of applications engineers at ADI. By using MultiSim, "this flow works a lot better for customers," he said.

- David Lammers
EE Times

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