1-V power supply CMOS cascode amplifier

摘要

We design a folded cascode operational transconductance amplifiernin a standard CMOS process, which has a measured 69-dB DC gain, a 2-MHznbandwidth, and compatible input- and output voltage levels at a 1-Vnpower supply. This is done by a novel, current driven bulk (CDB)ntechnique, which reduces the MOST threshold voltage by forcing anconstant current though the transistor bulk terminal. We also look atnlimitations and improvements of this CDB technique