Generally for chips with analog and digital, such as DACs and ADCs, you want a split plane ground plane on the same side as the chip with the digital ground plane on the digital side of the chip and the analog ground on the analog side of the chip, particularly if the chip has a separate analog and digital ground.
The single point connection between the grounds should be through a ferrite bead near the chip(s) if possible.
The ferrite chip you show looks okay although one with a higher impedance at frequency might be better.
The single point connection between the grounds should be through a ferrite bead near the chip(s) if possible.
The ferrite chip you show looks okay although one with a higher impedance at frequency might be better.