A new class AB differential input stage for implementation of low-voltage high slew rate op amps and linear transconductors

摘要

A new class AB differential stage that operates with a single supply voltage of less than two transistor threshold voltages is introduced. This circuit has utilization in high slew rate one stage op amps, two stage op amps with class AB input and output stages and linear transconductors. The circuit was verified with simulations and experimentally. It it is shown to have lower voltage supply requirements than other commonly used structures reported in literature.