Tool/software: WEBENCH® Design Tools
Hi, team,
Follow the datasheet, I already got positive 0V-10V on VOUT and use the below configuration:
DAC8771EVM software:
(And I have got negative 15.36V on VNEG and positive 15.36V on VPOS on DAC8771EVM board)
But when I want to get negative 0V-10V on VOUT, try to change some options like "Clear Select", "Buck-Boost:Mode", "All Buck-Bost", finally still get positive 0V-10V,
What should I adjust on software to get negative 0V-10V?
Hi,
You need to select DAC Output mode from the GUI to +/-10V mode to generate output from -10V to 10V which will cover your 0V to -10V range.
If you want 0V when DAC code is at zero, and -10V when the DAC is full code, its not possible in the EVM. You should have extra circuits in place to modify the output range for this.
Let me know if you need more help in designing with this part.
Regards,
AK
Thanks for your response.
Yes, I need the "+/-10V" option, but I press the Mode button, no "+/-10V" option in the list as below,
What did I miss?
Hi,
Please download the latest version form TI web below. or click on the 7th option from the drop down list, your case it will be ?0V
I just installed the same and have proper options showing up.
https://www.ti.com/tool/DAC8771EVM#technicaldocuments
Thank you very much!!
I click on the 7th option "?0V" and got negative 10V on VOUT!!
