Datasheet

Quick Start Guide AD9788/87/85-DPG2-EBZ
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2010
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D00000-0-
1/07(A)
HARDWARE SETUP (DAC OUTPUT)
Once the DPGDownloader software is installed, the hardware can be connected as shown in Figure 1. A single 5V power supply powers
the evaluation board. The power supply should be able to source up to 2A to cover all of the board’s operating conditions. A low jitter
clock source (< 0.5ps RMS) should be used for the DACCLK. A sinusoidal clock output level of 0dBm to +4dBm is optimal. By default,
the DAC outputs are connected to the filter driving the quadrature modulator so the output signal will be at the RF output of the
ADL5375, J6. The modifications for observing the DAC outputs and different clocking options will be explained. The evaluation board
plugs directly into the DPG2. The PC connects to both the DPG2 and the evaluation board through USB cables.
GETTING STARTED – SINGLE TONE TEST
It is suggested that the basic set-up is verified before making any modifications to the evaluation board.
Basic Hardware Set-Up
Connect the equipment to the AD9788 evaluation board per the following table:
Equipment Connects to AD978x Eval Board
Power Supply P4 (+5V), P5 (GND)
Signal Source Clk J2 (DAC Clock ), Set source to 200MHz, 3dBm output
Signal Source LO J19 ( LO IN), Set source to desired LO (i.e. 900 or 1800 MHz, 3dBm output when using the
ADL5375 to mix up to the antenna frequency.
PC USB Cable XP2
Spectrum Analyzer J6 (RF_OUT)
DPG2 P1 and P2
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, SPI GUI Launch Button, Vector Generation Pull-Down
Menu, Vector Palette, Vector Selection Panel and the Download and Play buttons.
Figure 1- Bench Set-Up Figure 2- DPG2 and AD9788 Evaluation Board