Each output buffer amplifier is capable of [...] driving a load of 2kΩ in parallel with 1000pF to GND. The source and sink capabilities of the output amplifier can be seen in the Typical Characteristics.
There's a graph showing the source current capability:
Q1. Is the 2kΩ a minimum and the 1000pF a maximum? So it can drive >2kΩ and a capacitance of <1000pF?
The controller manual (p9) states about the 0-5V input:
NOTE: This is a current sinking device. The receiving circuit is essentially a 250 ohm resistor to ground.
Q2. Can the DAC supply this input or will it draw too much current? If so, is there a way to connect it while still getting the full 0-5V range from the DAC?
Many thanks for your help