Obsidian has experience with a pipeline ADC design for communications, analog front ends.
Made from a stack of 1.5 bit switched cap ADC. The most critical element is the differential stage amplifier, a folded cascodes is used with an additional source follower stage prior to the pre-drive for extra speed.
Excellent dynamic characteristics are needed for the system to settle within one clock cycle. For this 8 bit solution trimming is not required.
A 10 bit version of the same design adds trimming for gain and offset.
