High-performance CMOS pseudo-differential amplifier

A pseudo-differential-input differential-output CMOS amplifier, operating from a minimum supply of V/sub T/+2V/sub DS,SAT/ and exhibiting high current-drive capability as well as fast settling response, is presented. The circuit is also characterized by a wide input differential range that enables its use even as a linear transconductor. For this purpose, a common-mode feedback section is also included. Simulation results confirming the overall excellent performance are provided.