CMOS OTA for Detector Readout Electronics Integrator in the ALICE FIT Project

This article discusses the Operational Transconductance Amplifier (OTA), which is a part of the integrator circuit for the new read-out electronics for the FIT detector in the ALICE experiment in CERN. The circuit is implemented using 180-nm CMOS technology within Cadence Virtuoso, and powered by a 3.3 V supply. This design features a two-stage, single-ended CMOS operational transconductance amplifier (OTA) incorporating cascodes, along with a load capacitance of 50 pF. This solution allows for the processing of nanosecond pulses across a broad dynamic range.