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AD9743/5/6/7 Evaluation Board Quick Start Guide

WHAT’S IN THE BOX

  • WHAT’S IN THE BOX
  • AD9747-EBZ Evaluation Board
  • Mini-USB Cable
  • AD9747 Evaluation Board CD

EXAMPLE EQUIPMENT LIST

  • +5Vdc Power Supply: Agilent E3630A
  • Digital Pattern Generator( DPG2 or DPG3) OR System Demonstration Platform( SDP-H1) and FMC to High-Speed DAC Evaluation Board Adaptor(AD-DAC-FMC-ADP)
  • DAC Clock Source: R&S SML 02
  • AQM LO Clock Source: R&S SMA100A
  • Spectrum Analyzer: Agilent PSAA or R&S FSU
  • PC: Windows PC with 2 or more USB ports (See Appendix for system requirements)

INTRODUCTION

The AD9747 Evaluation Board connects to the Analog Devices Digital Pattern Generator (DPG2, PN: ADI HSC-DAC-DPG-BZ; or DPG3, PN: AD –DPG3) or System Demonstration Platform (SDP-H1, PN: EVAL-SDP-CH1Z) to allow for quick evaluation of the AD9747. The DPG2 or SDP-H1 allows the user to create many types of digital vectors and transmit these at speed to the AD9747 in any of the AD9747 operating modes. The AD9747 evaluation board is configured over USB from a panel within the DPGDownloader software. (Note: The AD9747 operation is described in detail. The operation of the other devices in the family is described in a later section.)

SOFTWARE INSTALLATION

The AD9747 application software, DPGDownloader, should be installed on the PC prior connecting the hardware to the PC. The DAC Software Suite is included on the Evaluation Board CD, or can be downloaded from the DPG web site at http://www.analog.com/dpg. This will install DPGDownloader required for loading vectors into the DPG2 and configuring the AD9747 evaluation board.

HARDWARE SETUP (DAC OUTPUT)

Once the DPGDownloader software is installed, the hardware can be connected . A single 5V power supply powers the evaluation board. The power supply should be able to source up to 1A to cover all the board’s operating conditions. A low jitter clock source (< 0.5psec RMS) should be used for the DACCLK. A sinusoidal clock output level of 0 to 4dBm is optimal. By default, the DAC outputs are connected to SMA connectors for evaluation. Both DAC outputs are available. Later in the document, the modifications for observing the modulator output and different clocking options will be shown.

  • The evaluation board plugs directly into the DPG2 or DPG3.

The PC connects to both the DPG2 and the evaluation board through USB cables as shown in Figure 1 and Figure 2

  • The evaluation board plugs into the AD-DAC-FMC-ADP adapter board that plugs into the SDP-H1.

The PC connects to both the SDP-H1 and the evaluation board through USB cables as shown in Figure 3 and Figure 4.

(Note: The AD-DAC-FMC-ADP adapter board allows AD974x-DPG2-EBZ DAC Evaluation Boards to be used on SDP-H1 with a FMC connector.) Figure 1. DPG2 and AD9747 Evaluation Board Bench set-up Figure 2. DPG2 and AD9747 Evaluation Board Figure 3. SDP-H1 and AD9747 Evaluation Board Bench set-up Figure 4. SDP-H1 and AD9747 Evaluation Board

BASIC HARDWARE SETUP

It is suggested that the basic set-up is verified before making any modifications to the evaluation board. Connect the equipment to the AD9747 evaluation board per the following table:

  • Equipment Connects to AD9747 Eval Board
  • Power Supply P5(+5V), P6(GND)
  • Signal Source J1(CLOCK IN), Set source to 100MHz, 2dBm output
  • PC USB Cable XP2
  • Spectrum Analyzer J5(IOUT1_P) or J9 (IOUT2_P)
  • DPG2 P1 and P2
  • SDP-H1 J4(FMC connector)

DPGDOWNLOADER SOFTWARE

Power up the DPG and connect the USB cable to the PC. Next, run the DPGDownloader Software. A shortcut will be installed to your Start menu during the installation of the DAC Software Suite. To begin, click on the DPGDownloader shortcut in your Programs menu, typically at Start > Programs > Analog Devices > DPG > DPGDownloader. The basic parts of the DPGDownloader window are; Hardware Config Panel, EVB Config, Vector Generation Pull-Down Menu, Vector Palette, Vector Selection Panel and the Download and Play buttons. Figure 5. DPGDownloader Window

  • - If the AD9747 evaluation board has been recognized by the PC, “AD9747 RevB” should be populated in the Evaluation Board field in the Hardware Config panel.
  • - Generate a sinewave by pulling down the “Add Generated Waveform” menu and choosing “Single Tone”. Fill in the form as shown in Figure 5 (Sample Rate = 100MHz, Desired Frequency = 17.0MHz, etc.). Select the I and Q data vectors in the data selection panel.
  • - Configure the eval board by writing the value 01 to register 1E1. This configures the AD9516 to use the CLK input to drive the clock path.

  • - Bypass the clock dividers on the AD9516.

  • - The DCO frequency field in the DPGDownloader window should now be reading something close to 100MHz.
  • - Next hit the download button. This transfers the data from the PC to the DPG memory.
  • - When the vector has finished downloading, hit the play button. This starts the DPG2 transmitting data to the eval board.
  • - The output from J5 and J9 should be a clean 29MHz tone as shown below:

Using the AD9743/AD9745/AD9746/AD9747 Evaluation Boards

The evaluation boards for the AD9743/AD9745/AD9746/AD9747 are identical except for the DUT installed. The operation of the eval boards is also the same except for the vector generation “DAC Resolution” field and the Data Width fields as shown below. These fields should be configured to match the DUT.

Selecting the Modulator Outputs

By default, solder jumpers JP4, JP5, JP6, and JP7 configure the DAC outputs to be observed at SMA outputs J5 and J9. This jumper setting is shown in Figure 6a). To connect the DAC outputs to the LPF and the ADL537x analog quadrature modulator, the solder jumpers need to be repositioned as shown in Figure 6b). The modulator output can be observed thru the SMA connector J6 (MODULATED OUTPUT). The modulator LO input can be sourced thru SMA connector J10 (LOCAL OSC INPUT). The clock level into the modulator should be set to about 3dBm.

      Figure 6a) DAC Output Configuration	                     Figure 6b) Modulator Output Configuration 

Eval Board Jumper Options

There are 6 pin jumpers on the evaluation board corresponding to the 6 supplies on the board. They serve as ‘switches’ that determine if the on board LDOs or external supplies are used for each individual supply. They are shunted by default, which means on board LDOs are used. When an external supply is necessary, pull off the shunt from the corresponding supply and connect the external supply to the SMA test points close to the jumper.

/srv/wiki.analog.com/data/pages/resources/eval/dpg/ad974x-dpg2-ebz.txt · Last modified: 07 May 2018 17:42 by ahurman