• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 47 subscribers
  • Views 291 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DAC81416EVM: DAC81416EVM

Stefanos Eleftheriadis
Prodigy 10 points

Part Number: DAC81416EVM

Tool/software:

Hi,

I'm having trouble setting up  the DAC. I connected the device to my pc with an usb2any device. I also connect the J7.3 to GND, J7.5 to 5V, J7.6 to -15V and J7.7 to 15V for power supply.

I communicate with the usb2any through these apps here.

I tried the above parameters but still it won't produce any output voltage.

What do you suggest me to do?

  • 0
    TI__Guru 53763 points

    Sanjay will help here.

  • 0 in reply to Paul_Frost
    TI__Expert 4980 points

    Hi ,

    Please provides details for all the 2/3 pin jumper connections, measure the supply voltages for the VCC, VSS, VDD/VAA and VIO on the EVM test points and check the SPI lines on EVM HW. If you see on the HW that it's all good and as per the EVM user's guide, please try the SPI write sequence as mentioned below to get voltage output on the DAC channels- 

     

    Here is the minimal set of commands to verify the DAC VOUT channels - 

    a) Write 0x0A04 in SPICONFIG (0x03) -  to power-up the DAC81416 device 

    b) Write 0x3F00 in GENCONFIG (0x04) - to use internal reference

    c) Write 0x0000 in DACPWDN (0x09) - to power-up the individual DAC channels

    e) Write 0x8000 in DACn_DATA (n = 0x10 to 0x1F) -  to configure the individual DAC channel outputs to 2.5 V 

     

    Still not getting the DACOUT voltages, let me know.

     

    Thanks,

    Sanjay