I know and use FPGAs quite a lot between my microcontroller and external interfaces and learned to value the flexibility of this setup.
Now I am wondering whether such a thing exists for the analogue world, too: an array of opamps, filters and comparators together with routing interconnect in a single package.
I've found a sparse selection of programmable gain amplifiers and some programmable higher-order filters at mouser and digikey but nothing with an programmable interconnect.
Does such thing exists? Or are we stuck with special made analogue interface circuitry?