Testing and Configuration

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2.5

DAC31x2EVM Configuration for DAC Output

Follow this procedure to configure the DAC31x2EVM in order to test the EVM signal output.

Step 1.

Four 0-

Ω resistors must be moved in order to configure the output of the DAC31x2 as 1:1

transformer-coupled.

•

Remove the resistors R109, R110, R111, and R112

•

Install the resistors R211, R207, R191, and R195

Step 2.

Provide the clock input: 491.52 MHz at 1.5 V

DAC31x2EVM.

Step 3.

Turn on power to the board at J12/J13.

Step 4.

Verify the spectrum using the Spectrum Analyzer at the two DAC outputs of the

DAC31x2EVM (J3 and J2).

Figure 5 illustrates a typical transformer-coupled output using a wave analyzer.

Figure 5. DAC3162EVM Transformer-Coupled Output at 30 MHz IF

6

DAC31x2EVM

SBOU096A – November 2010 – Revised January 2011

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