I am using the AD5687BCPZ DAC to drive an RF circuit. The control is from an FPGA. I have two different grounds, i.e. an RF ground for the RF circuit and a digital ground for the FPGA. In some DACs, the analog and digital grounds are clearly specified on the chip. Can you help advise if I should place the AD5687 DAC on the RF ground or digital ground or should I separate the grounds going to the DAC?