Pub Date : 2024-10-08DOI: 10.1109/LSSC.2024.3476194
Marco Privitera;Alfio Dario Grasso;Andrea Ballo;Massimo Alioto
A four-stage operational transconductance amplifier (OTA) for ultralow-power applications is introduced in this letter. The proposed circuit inclusive of frequency compensation requires minimal transistor count and passives, overcoming the traditionally difficult compensation of four-stage OTAs and bringing it back to the simplicity of three-stage OTAs. At the same time, the proposed circuit achieves high power efficiency, as evidenced by the > $3.7times $