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ADC32RF55EVM: Problem operating with TSW14J58 EVM and HSDC Pro at 3Gsps

Part Number: ADC32RF55EVM

I am trying to set up to test an ADC32RF55EVM with the TSW14J58 EVM using the HSDC Pro GUI. I am able to capture data but something does not appear to be set correctly.

Following the ADC32RF5xEVM User Guide instructions for bypass mode, I am able to get it to work properly with a 2.6GHz clock signal and 2.6 Gsps sample rate.

Setting for this configuration are:

HSDC Pro GUI

Select FW: ADC3232RF5x_8224_8G-13G_1xAvg
 - the FW specified in the user guide, ADC3232RF5x_8224_12G-16G, is not available in the drop-down list

ADC32RF5x GUI settings

  • DDC: bypass
  • Average: 1x
  • ADC Mode: Dual without Averaging
  • Sample Frequency: 2600.0
  • LMFSHd: 8-2-2-4-0
  • Lane Rate: 13000.0

-Dither Disabled

-Scrambler Disabled

Screenshots of captured data at 2.6 Gsps with no RF input signal and a 100MHz RF input signal below show results as expected.

 

To operate at 3 Gsps, the clock input was changed to 3 GHz and the following settings were made

HSDC Pro GUI

Select FW: ADC3232RF5x_82820_8G-13G

ADC32RF5x GUI settings

  • DDC: bypass
  • Average: 1x
  • ADC Mode: Dual without Averaging
  • Sample Frequency: 3000.0
  • LMFSHd: 8-2-8-20-0
  • Lane Rate: 12000.0

-Dither Disabled

-Scrambler Disabled

- Drop LSB's Enabled

Screenshots of captured data at 3.0 Gsps with no RF input signal and a 100MHz RF input signa are shown.

I am thinking this is due to an incorrect setting somewhere or incorrect firmware load for the hardware configuration....

Any help getting this issue sorted would be greatly appreciated.

  • Hi Mark,

    Yes, this is a known issue with this version of the GUI. Please toggle the Drop LSB switch in the gui in the meantime. I am working on a newer GUI which will correct this.

    Thanks, Chase

  • Thanks for the response Chase. I toggled the Drop LSB's which reduced the noise level down to what is expected. However, when I apply a single 100MHz RF tone to an input channel, I still get a FFT output with many tones across the spectrum. Please see screenshot below. Thanks