A 0.55V 61dB-SNR 67dB-SFDR 7MHz 4<sup>th</sup>-order Butterworth filter using ring-oscillator-based integrators in 90nm CMOS.

Brian Drost Mrunmay Talegaonkar Pavan Kumar Hanumolu A 0.55V 61dB-SNR 67dB-SFDR 7MHz 4<sup>th</sup>-order Butterworth filter using ring-oscillator-based integrators in 90nm CMOS. 360-362 2012 ISSCC https://doi.org/10.1109/ISSCC.2012.6177051 conf/isscc/2012 db/conf/isscc/isscc2012.html#DrostTH12