Open Source CMOS General Purpose Operational Amplifier

In this paper we present an open source general purpose operational amplifier. For this project we used only the open source software tools and the only currently available open source CMOS technology node - SkyWater 130 nm. Availability of the first-ever open source project design kit enables us, for the first time in history, to publish integrated circuits designs at all levels of abstraction: from schematic to mask layer details. This particular circuit is released publicly under a license that allows commercial applications, but its primary purpose is general availability to everyone for study.