Q20D080 analog RAM logic array

Abstract

An ECL (emitter-coupled logic)-structured array containing 1520 logic cells, 2560 bits of RAM, and a customizable analog section is described. The special needs of high performance VLSI testers was the driving force behind its organization and architecture. The chip is fabricated with a trench isolation bipolar process with 1-μm features, double layers of polysilicon, and triple layers of metallization