A 0.3mm2 10-b 100MS/s pipelined ADC using Nauta structure op-amps in 180nm CMOS. - Andrew P. Nicholson; Julian Jenkins; Astria Nur Irfansyah; Nonie Politi; André van Schaik; Tara Julia Hamilton; Torsten Lehmann (ISCAS, 2013)

Design strategy for enhanced output impedance current-steering DAC in sigma-delta converters. - Astria Nur Irfansyah; Torsten Lehmann; Julian Jenkins; Tara Julia Hamilton (MWSCAS, 2013)

Nauta OTA in a second-order continuous-time delta-sigma modulator. - Astria Nur Irfansyah; Long Pham; Andrew P. Nicholson; Torsten Lehmann; Julian Jenkins; Tara Julia Hamilton (MWSCAS, 2014)

Subthreshold operation of Nauta's operational transconductance amplifier. - Astria Nur Irfansyah; Andrew P. Nicholson; Julian Jenkins; Tara Julia Hamilton; Torsten Lehmann (NEWCAS, 2015)

The effect of source resistance on the linearity of Nauta structure OTA. - Long Pham; Astria Nur Irfansyah; Tara Julia Hamilton; Torsten Lehmann (MWSCAS, 2017)

A Statistical Design Approach Using Fixed and Variable Width Transconductors for Positive-Feedback Gain-Enhancement OTAs. - Andrew P. Nicholson; Astria Nur Irfansyah; Julian Jenkins; Tara Julia Hamilton; Torsten Lehmann (IEEE Trans. Very Large Scale Integr. Syst., 2017)

Leveraging Open Source IC Design Tools for an Undergraduate Microelectronic Circuit Design Course. - Astria Nur Irfansyah (ISCAS, 2024)