Hi,I'm trying to use the ada-gpio (http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&categoryno=73&no=278&partno=1) card with the DE1-SoC (rev c). for a start, I want to use the DAC to output some voltage according to switches on the board. what I had already done:
(leon and flz - I think there was a bug In the forum so my first post wasn't visible for few hours)Anyway - I would still appreciate any help with the setup of the card.
Hi Avi,Please allow me to comment further on top of the last reply from our technical support team a month ago. For the 2nd question of yours, our ADA-GPIO was designed with transformer configuration to provide the optimum high frequency performance. However, it is for ac coupling application only. You'd have to change the configuration from transformer to differential op amp configuration for dc coupling and that requires huge amount of rework, so there's nothing can be done by changing your code to output DC voltage. For more details, please refer to page 18 of a datasheet named AD9767.pdf in the system CD. Hope it helps. David from Terasic