The interposer could be a passive component or an active component with circuit. The passive interposer has an advantage in a certain area and the active interposer also has its own. The depletion area in silicon substrate will be considered as well to increase the level of accuracy.

What is an interposer layer?

An interposer is an electrical interface routing between one socket and connection to another. The purpose of an interposer is to spread a connection to a wider pitch or to re-route a connection to a different connection, using RDL or Redistribution layers.

What is active interposer?

The active interposer integrates: voltage regulators fully integrated without passives for efficient power management of the 3D-stacked chiplets. ... energy-efficient 3D-plugs for dense high-throughput, inter-layer communication, and. a memory-IO controller and the physical layer (PHY) for socket communication.