Is there a CMOS-based analog compute chip that uses hybrid technology nodes? (e.g. 14 nm for digital part such as SRAM and 28 nm for analog part)

Question

In CMOS-based analog computing, there always are mixture of analog and digital parts. For example, the computation is performed in analog domain and the storage of on-chip data in performed in digital domain using on-chip SRAM.

However, as the technology for analog computing is lag behind the digital computing, the analog chip always uses a out-of-date technology (e.g. 28 nm), I wonder can we use 14 nm technologies to design the chip, but the analog parts are just designed using 28 nm (this is because the 14 nm technologies can use 28 nm transistors)?

Is there a CMOS-based analog compute chip that uses hybrid technology nodes? (e.g. 14 nm for digital part such as SRAM and 28 nm for analog part)

Answer 1

This is problem that has been plaguing analog circuits in deep submicron technologies. Getting worse with each node reduction.

AFAIK, the so-called "chiplets" have been invented in order to accommodate many dies within one package, thus optimizing the usage of different technologies for different purposes (analog, digital, etc.).

Some months ago I attended a seminar were they said they're trying to standardize the technology, as the interfacing between dies is not standard.