A novel family of low-voltage very low power super class AB OTAs with significantly enhanced slew rate and bandwidth

A simple modification to a conventional single-stage OTA based on the combined use of local common-mode feedback and very efficient class AB input stages leads to three proposals for class AB amplifier topologies. They operate at low voltage and feature very low static power consumption, bandwidth enhancement, and very high slew rate. Measurement results in a 0.5-/spl mu/m CMOS technology confirm the mentioned improvements.