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AD9776A-DPG2-EBZ

AD9779A/78A/76A Evaluation Board Quick Start Guide

Analog Devices 

Quick Start Guide

AD9779A/78A/76A-DPG2-EBZ

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 (< 0.5psec 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 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.

Figure 1- Bench Set-Up

Figure 2- DPG2 and AD9788 Evaluation Board

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 AD977xA evaluation board per the following table:

Equipment

Connects to AD977xA 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.

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