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Volume 9, Issue 3 | YOUR SEMICONDUCTOR SOLUTIONS RESOURCE |
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C o n t e n t s Precision DACs Offer Up to 60 V Output Range >> Single Chip DACs Improve Reliability and Data Quality >> Digipots Enable New Levels of Precision Calibration in Industrial Systems >> New Tool Takes Guesswork Out of Finding the Perfect DAC >> Most Accurate Voltage/Current Output Driver for Industrial Control >> Highest Precision Accurate Low Voltage Buffered Quad DAC >> Dual DAC Solutions Target Energy Efficient Applications >> New Transmit DAC Architecture Provides Direct to RF Output >> Input/Output Port Eases Design of High Density Optical Line Cards >> DAC Integrates QAM Encoder, Interpolator, and Upconverter >> DAC Evaluation Platform Provides Time-Saving and Flexible Evaluation Solution >> All prices in this bulletin are in USD in quantities greater than 1000 (unless otherwise noted), recommended lowest grade resale, FOB U.S.A.
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High Speed DAC Evaluation Platform Provides Time-Saving and Flexible Evaluation Solution
Achieving the rated performance from high speed, high performance DACs requires proper PCB layout, application, and interface techniques. Evaluation of these devices can present a problem when resources are scarce for designing an adequate test board or assembling the proper test equipment. To allow for rapid and thorough evaluation of ADI's high speed DAC products, a complete evaluation system has been developed. This system takes the headaches out of initial product evaluation, leading to shorter design cycles and easier system validation by comparing evaluation board results to system results. The evaluation system consists of three main items: part-specific evaluation board, Data Pattern Generator (DPG), and computer software that communicates with both the evaluation board and pattern generator. All of the new high speed DAC evaluation boards use a USB interface vs. the older parallel port interface—allowing the evaluation boards to be used with laptop and mini desktop computers. USB 2.0 provides a faster and more robust communication method, and for several of the low power DAC evaluation boards, the bus provides the 5 V power supply.
The Data Pattern Generator Series 2 (DPG2) is the latest pattern generator available from ADI. It provides the ability to drive the highest performing DAC at full speed (1.25 GSPS) and supports two channels of 16 bits in either LVDS or 3.3 V, 2.5 V, and 1.8 V CMOS. The DPG2 communicates with a PC over high speed USB and has 512 MB of RAM on board. The data vector is downloaded from the PC into the RAM, then fed from the RAM into the DAC. The DPG2 is not a required purchase with a DAC evaluation board; however, the tool is offered to our customers for only $5000 to enable timely evaluation of our high speed DACs. The final component of the system is the PC software to communicate with each piece of hardware. Every evaluation board has an SPI controller application, which makes it quick and easy to adjust any available option on the part. The DPG2 comes with the DPG Downloader software, which can generate vectors or load in custom vectors, as well as alter various settings on the DPG2. The supporting software is compiled into one installer to ensure the entire evaluation system can be set up and used in a matter of minutes. For additional information, visit www.analog.com/DPG.
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