Ultra low voltage, low power active-RC filter in 90 nm CMOS technology

Yeshwanth, Y.P.Prasad, T.P.V.Mudadla, V.PavanRekha, S.2026-02-0620192019 IEEE International Conference on Distributed Computing, VLSI, Electrical Circuits and Robotics, DISCOVER 2019 - Proceedings, 2019, Vol., , p. -https://doi.org/10.1109/DISCOVER47552.2019.9007958https://idr.nitk.ac.in/handle/123456789/31010In this work, an ultra low voltage, second order low pass active-RC filter is designed in 90 nm CMOS process. A bulk-driven transconductor and a feed-forward compensated operational transconductance amplifier (OTA) are used as building blocks of the filter. Operating with a supply voltage of 0.5 V, filter exhibits a low pass Butterworth response with a cutoff frequency of 1 MHz. A mathematical model of the filter is developed using descriptor state-space equations for optimizing the filter response. The designed filter consumes a power as less as 91.99 Î¼W with a figure of merit (FoM) of 3.39 fJ/pole. Â© 2019 IEEE.Feedforward frequency compensationLow-powerLow-voltageTransconductorUltra low voltage, low power active-RC filter in 90 nm CMOS technology