Summary of Contents for Analog Devices AD9142A-M5372-EBZ
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Data Pattern Generator Series 2 (DPG2) Introduction The AD9142A-M5372-EBZ connects to a DPG2 for quick evaluation of the AD9142A, a high-speed, signal processing Digital to Analog Converter. The DPG2 automatically formats the data and sends it to the AD9142A-M5372-EBZ, simplifying evaluation of the device. The Evaluation Board (EVB) runs from a +5V supply.
Evaluation Board software. Figure 1 shows the block diagram of the set-up. Figure 2. Top view of Figure 1. Block diagram of the AD9142A lab bench set-up AD9142A-M5372-EBZ Getting Started The PC software comes on the included Evaluation Board CD, but may also be downloaded from the DPG Web site at http://www.analog.com/dpg.
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IQMOD output, under the condition: Fdata = 350MHz, 4X interpolation, IF = 50MHz, LO = 2000MHz, RF = 2050MHz. 1. 1. To begin, open the AD9142A SPI application (Start > All Programs > Analog Devices > SPIPro). The screen should look similar to Figure 3.
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FRACTIOANAL) should now match the FIFO level request registers. f. Open DPG Downloader if you have not done so. (Start > All Programs > Analog Devices > DPG > DPGDownloader). Ensure that the program detects the AD9142A, as indicated in the “Evaluation Board”...
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Figure 5 DPG Downloader sinewave vector h. Click Download ( ) and Play ( i. Go back to the AD9142A SPI software and toggle the “FIFO SPI RESET REQUEST” button (from 0 to 1 and back to 0) to reset the FIFO. The FIFO level readback registers (INTEGRAL and FRACTIOANAL) should now match the FIFO level request registers.
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Figure 6 Configured Quick Start Tab of the AD9142A SPI software 4. The current on the 5V supply should read about 1310mA. Rev 07 Aug 2013 10:33 | Page 6...
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Figure 7 AD9142A-M5372 Eval Board output Spectrum SPI SOFTWARE The AD9142A SPI software is conveniently organized in a series of tabs that groups registers according to their functions. In this way, all registers associated with the digital functions, for example, are on the “Digital Functions”...
Quick Start The “Quick Start” tab has selections that apply to the general configuration of the DAC. Reset DAC is recommended every time when the DAC is powered on or reset. Interpolation Rate allows the user to select among the 3 interpolation modes (2X, 4X, and 8X). When the NCO is used, set NCO Enable to 1, fill in the NCO frequency tuning word with the desired value and toggle SPI Update Request.
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