"Makes me wonder why anyone
want's to make a DVG at all when a couple analog switches, resistors, and
caps will make a perfectly good AVG that could even use serial DACs."
I guess because you could do it in software :-)
The other interesting thing would be using a totally digital system
to measure the real small and large scale slew rates of the different
monitors.. but you can do that with a function generation just as
easily..