AFE20408EVM: DAC output is not changed

Isao Takigasaki

Part Number: AFE20408EVM
Other Parts Discussed in Thread: AFE20408

Hi,

My customer is evaluating AFE20408 on the EVM with GUI.

When the customer change the DAC value on GUI, the DAC output is not changed at DACA0 to 3..
Could you give us any advise to solve it?

The attached pdf shows the GUI settings. Please refer it.
At the setting, DAC output voltage was -5V at DACA0 to 3. The customer changed the buffer value on the GUI, but DAC output voltage is not changed.
VSSA = -5V and VCCA = 0V.
The customer refered user's guide to set the GUI. If you also give us any other documentation of usage of the GUI, it helps us.

ScreenShot.pdf

Best Regards, Taki

3 months ago

0 Erin Bowrie 3 months ago

TI__Genius 17490 points

Hi Taki-san,

Is this your question as well?

(+) AFE20408: DAC output method and setting - Data converters forum - Data converters - TI E2E support forums

If so, we can continue in that thread as I answered it first.

Thanks,
Erin

0 Isao Takigasaki 2 months ago in reply to Erin Bowrie

TI__Expert 3730 points

Hi Erin-san,

Thank you for your pointing. I will confirm my customer.

BTW, the thread in above also ask you to provide any documentation for usage of the GUI. Could you answer it on the thread also?

Best Regards, Taki

0 Erin Bowrie 2 months ago in reply to Isao Takigasaki

TI__Genius 17490 points

Hi Taki-san,

We do not have any additional information. The GUI/EVM is meant to be used in tandem with the datasheet and user's guide. The GUI is effectively just the register map of the device, with some of the bits given direct "buttons' on the high level page. A decently strong understanding of the device functionality is required to operate the GUI effectively.

Thanks,
Erin