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Testing and Configuration

2.4

DAC31x2EVM Configuration for Modulator Output

Follow these steps to set up the DAC31x2EVM and perform a spectrum analysis.

Step 1.

Set the clock input to 491.52 MHz at 0.5 V

RMS

at the J9 SMA connector of the DAC31x2EVM.

Step 2.

Supply the LO source of 900 MHz (7 dBm) at the J10 SMA connector of the DAC31x2EVM.

Step 3.

Turn on power to the board at J12/J13.

Step 4.

Verify the spectrum using the Spectrum Analyzer at the RF output of the DAC31x2EVM
(J11).

A typical WCDMA output from a wave analyzer is shown in

Figure 4

Figure 4. DAC3162EVM and TRF3703-33 WCDMA Output

SBOU096A – November 2010 – Revised January 2011

DAC31x2EVM

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Содержание DAC3152EVM

Страница 1: ...or evaluating QAM WCDMA LTE or other high performance modulation schemes For more information about the DAC31x2 family see the product data sheet available for download at www ti com Throughout this d...

Страница 2: ...oupled RMS FPGA CLK TSW3100 LVPECL dc coupled CDCP1803 Power Supply Circuits 5 V GND Introduction www ti com 1 Introduction 1 1 Block Diagram Figure 1 shows the DAC31x2EVM block diagram Figure 1 DAC31...

Страница 3: ...Ground to connectors J12 and J13 respectively Provide a 0 5 VRMS 500 MHz max clock at J9 the CLOCK IN SMA port of the DAC31x2EVM Provide a 7 dBm 350 MHz to 4 GHz local oscillator LO source at port J10...

Страница 4: ...value to DAC Clock Rate 3 84 that is 491 52 3 84 128 Step 2 Enter the desired offset frequency for example 30 MHz for each desired carrier Step 3 Select the LVDS Output button Step 4 Select the Offse...

Страница 5: ...2 Supply the LO source of 900 MHz 7 dBm at the J10 SMA connector of the DAC31x2EVM Step 3 Turn on power to the board at J12 J13 Step 4 Verify the spectrum using the Spectrum Analyzer at the RF output...

Страница 6: ...stors R211 R207 R191 and R195 Step 2 Provide the clock input 491 52 MHz at 1 5 VRMS at the J9 SMA connector of the DAC31x2EVM Step 3 Turn on power to the board at J12 J13 Step 4 Verify the spectrum us...

Страница 7: ...vailability removed DAC3172 from associated devices 1 Updated title of Figure 4 5 Changed title of Figure 5 6 NOTE Page numbers for previous revisions may differ from page numbers in the current versi...

Страница 8: ...e following conditions This evaluation board kit is intended for use for ENGINEERING DEVELOPMENT DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end product fit...

Страница 9: ...may be subject to additional restrictions Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any i...