Effect of parasitics of feed-forward compensated OTA on Active-RC integrators

Abstract

This paper analyzes the effect of parasitics of the Operational transconductance Amplifiers (OTAs) on Active-RC Integrators. The analysis is carried out for an Active-RC integrator built around a feed-forward compensated OTA designed in 180 nm CMOS technology to operate at a supply voltage of 0.5 V. A non-ideality factor (NIF) has been defined that accounts for the deviation of the response of the Active-RC integrator from the ideal. Simulations performed on the transistor level integrator justifies the mathematical analysis presented. © 2013 Springer Science+Business Media New York.