Hi psrt1995,

I noticed you did not connect load resistors to the main DAC outputs. The output compliance voltage for the main DACs is up to 1V. So if you are operating in a full-scale output current of 31.66mA, there should be 30.1Ω load resistors connected…

AD9785-DPG2-EBZ可以看看如下链接

AD978x Evaluation Board [Analog Devices Wiki]

AD9788/7/5-DPG2 FMC Interposer & Evaluation Board / Xilinx ML-605 Reference Design [Analog Devices Wiki]

你需要完成什么应用， 满足需求的ADC很多， 如AD9613  AD9627，  DAC如 AD9780 AD9785

http://www.analog.com/cn/products/analog-to-digital-converters/ad-converters/ad9613.html

http://www.analog.com/cn/products/digital-to-analog-converters/da-converters/ad9780.html

IO电压满足CMOS要求

芯片手册：

All data input is registered on the rising edge of SCLK. All data

is driven out of the AD9785/AD9787/AD9788 on the falling

edge of SCLK.

数据在SCLK上升沿寄存，在下降沿改变，应该也没问题

What kind of performance do you need from the DAC? For high performance applications, you would not typically use the FPGA as the clock source for the DAC since there are better performance clock sources available, such as ADI's ADF series of PLLs.…