I have a system that has just about a dozen 12 bit DACs, a VCO in the MHz range, a bunch of analog switches, matched resistors and opamps in it. I would like to reduce it all to one IC.
One of the amplifiers is low noise (3nV/sqrt(Hz)) other than that fairly ordinary rail-rail op-amps would do everywhere but are really only needed in two places.
I have been looking at making an ASIC out of the design. I may have enough budget to let the design be fully custom even though I don't really have enough volume to justify it.
Low current consumption is an issue.