SBAU430 April   2025 DAC39RF12

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents (Required Equipment)
  6. 2Hardware
    1. 2.1 Setup Procedure
      1. 2.1.1  Installing the DAC39RF12EVM Configuration GUI Software
        1. 2.1.1.1 Installing & Setting Up Vivado Lab Tools
      2. 2.1.2  Connect the DAC39RF12EVM and TSW14J59EVM
      3. 2.1.3  Connect the Power Supplies to the Boards (Power Off)
      4. 2.1.4  Connect the Spectrum Analyzer to the EVM
      5. 2.1.5  Turn On the TSW14J59EVM Power and Connect to the PC
      6. 2.1.6  Turn On the DAC39RF12EVM Power Supplies and Connect to the PC
      7. 2.1.7  Turn On the Signal Generators
      8. 2.1.8  Launching the DAC39RF12EVM GUI and Programing the DAC EVM - JMODE 0
      9. 2.1.9  Launching the DAC39RF12EVM GUI and Programing the DAC EVM - JMODE 1
      10. 2.1.10 Launching the DAC39RF12EVM GUI and Programing the DAC EVM - JMODE 3
    2. 2.2 Evaluation Board Details: Analog Outputs
    3. 2.3 FMC Signal Routing
  7. 3References
    1. 3.1 Trademarks

2.2 Evaluation Board Details: Analog Outputs

The analog output path can be configured for both a high frequency path (MTX2-183+ balun from Mini-Circuits), which is default on CHB. And low frequency path (TCM2-63WX+ balun from Mini-Circuits) which is default on CHA. To use either balun, some components must be changed to direct the output signal as appropriate. See Table 2-2.

Each analog output path also has the ability to bypass both balun options entirely and allow the user to access the outputs differentially as well. To enable this feature, some components must be changed. See Table 2-3.

Table 2-2 Component Changes to Modify DAC EVM Output Paths
DAC Output ChannelComponents to RemoveComponents to Populate
CHA - Single-ended (MTX2-183+)C52, C60, C17C1, C2, C3 = 0.1µF
CHA - Differential (balun bypass)R3, R5, C17R1, R9, R2 = 0Ω
CHB - Single-ended (TCM2-63WX+)C4, C6, C5C61, C62, C22 = 0.1µF
CHB - Differential (balun bypass)R13, R19, C5R11, R15, R12 = 0Ω

Each analog output path has a wideband biasT on each output P/N pin to bias the outputs appropriately across the DAC supported bandwidth.

DAC39RF12EVM Analog Output Path - CHA
A. DACA Output stage. By default the TCM2-63WX+ balun is used for this channel. (30MHz to 6GHz)
Figure 2-24 Analog Output Path - CHA
DAC39RF12EVM Analog Output Path - CHB
A. DACB Output stage. By default the MTX2-183+ balun is used for this channel. (2MHz to 18GHz)
Figure 2-25 Analog Output Path - CHB